GMC OEM Head Unit Pinouts

Factory GMC radio, navigation and amplifier connector drawings. Match the part number, equipment option and connector keying.

Chevrolet (2003-2010), Cadillac, GMC, Saab 9-7X Head Units

for wide range of models produced in 2003-2009 years. Should be compatible p/n 1035957, 15917881, 15927261, 15196057, 15184935, 25753974, 15196055, 15234935, 25753974, 10357886, 15195858, 10359577, 10359565, 15184935, 28058188, 10359594, 15849619, 15115013, 10359565, 15927256. Saab 15783685, 15774309.

Connector overview

24 pin Gray 12110088 connector
12 pin 12064799 connector

24 pin Gray 12110088 connector

Pin Function Wire colour
A1 Radio Class 2 Serial Data ORN
A3 UQ3/UQ5: N/A · UQ7: Rear Seat Audio Enable Signal (UQ7 w/o Y91) PPL
A4 UQ3/UQ5: N/A · UQ7: FM Composite Signal (UQ7 w/ Y91) RED
A8 UQ3/UQ5: Left Front Speaker Output (+) (UQ3/UQ5) · UQ7: Left Front Low Level Audio Signal (+) (UQ7) TAN
A9 UQ3/UQ5: Left Front Speaker Output (-) (UQ3/UQ5) · UQ7: Left Front Low Level Audio Signal (-) (UQ7) GRY or DK GRN
A10 UQ3/UQ5: Right Rear Speaker Output (-) (UQ3/UQ5) · UQ7: Right Rear Low Level Audio Signal (-) (UQ7) LT BLU or BLK
A11 UQ3/UQ5: Right Rear Speaker Output (+) (UQ3/UQ5) · UQ7: Right Rear Low Level Audio Signal (+) (UQ7) DK BLU
A12 Ground BLK/WHT
B1 Battery Positive Voltage ORN
B3 UQ3/UQ5: · UQ7: Radio On Signal (UQ7 w/o Y91) or PNK or DK GRN

12 pin 12064799 connector

Pin Function Wire colour
C Drain Wire (w/ U2K/U2L) BARE
E Vehicle Speed Signal (w/ Y91) DK GRN/WHT
H Remote Playback Device Right Audio Signal(w/ U2K/U2L) DK GRN/ WHT
J Remote Playback Device Left Audio Signal (w/ U2K/U2L) BRN/WHT
K Remote Playback Device Common Audio Signal (w/ U2K/U2L) BLK/WHT
L Cellular Telephone Voice Low Reference / Remote Radio Audio Output (-) ORN/BLK
M Cellular Telephone Voice Signal / Remote Radio Left Audio Signal PNK/BLK
Chevrolet (2004-2012) Colorado, GMC Envoy, Isuzu Head Unit

p/n 15837848 (also for 15189817, 15216905, 15806673 ?)

Connector overview

Radio X1
Radio X2

Radio X1

Pin Function Wire colour
A1 Class 2 Serial Data PU
A2 Class 2 Serial Data PU
A8 Left Front Speaker Output (-) GY
A9 Left Front Speaker Output (+) TN
A10 Right Rear Speaker Output (+) D-BU
A11 Right Rear Speaker Output (-) L-BU
A12 Ground BK/WH
B1 Battery Positive Voltage OG
B8 Left Rear Speaker Output (-) YE
B9 Left Rear Speaker Output (+) BN
B10 Right Front Speaker Output (+) L-GN
B11 Right Front Speaker Output (-) D-GN

Radio X2

Pin Function Wire colour
C Drain Wire (U2K) BARE
G Class 2 Serial Data PU
H Remote Playback Device Right Audio Signal (U2K) D-GN/WH
J Remote Playback Device Left Audio Signal (U2K) BN/WH
K Remote Playback Device Audio Common Signal (U2K) BK/WH
L Remote Playback Device Left Audio Signal (UE1) OG/BK
M Remote Playback Device Audio Common Signal (UE1) L-BU
Chevrolet (2005-2010) Kodiak, GMC TopKick C-Series Head Unit

p/n 10388671

Connector 1

Pin Function Wire colour
A1 Radio Class 2 Serial Data OG
A8 Left Front Speaker Output (+) TN
A9 Left Front Speaker Output (-) GY
A10 Right Rear Speaker Output (-) L-BU
A11 Right Rear Speaker Output (+) D-BU
A12 Ground BK/WH
B1 Battery Positive Voltage OG
B4 Instrument Panel Lamps Dimmer Switch Signal GY
B8 Left Rear Speaker Output (+) BN
B9 Left Rear Speaker Output (-) YE
B10 Right Front Speaker Output (-) D-GN
B11 Right Front Speaker Output (+) L-GN
B12 LED Dimming Signal PU/WH
Chevrolet (2007-2010) Traverse, Buick Enclave, GMC Acadia, Saturn Outlook Head Unit

p/n 20790838

Connector overview

Radio X1, 14-pin
Radio X2, 16-pin 7283-9282-30
Radio X3 (U42), 16-pin 7283-9283-40
Radio X4 (U3R or UVB or UZR), 16-pin 7283-9284-80

Radio X1, 14-pin

Pin Function Wire colour
1 Battery Positive Voltage RD/WH
2 Left Front Speaker Output (+) (UQF) TN
2 Left Front Low Level Audio Signal (+) (UQA or UQS) TN
3 Right Front Speaker Output (+) (UQF) L-GN
3 Right Front Low Level Audio Signal (+) (UQA or UQS) L-GN/WH
4 Voice Recognition Audio Signal (UE1 with UZR or U3R) PK
5 Low Reference (UE1 with UZR or U3R) PK/BK
6 Entertainment Remote Enable Signal WH
7 LED Dimming Signal PU/WH
8 Ground BK/WH
9 Left Front Speaker Output (-) (UQF) GY
9 Left Front Low Level Audio Signal (-) (UQA or UQS) D-GN
10 Right Front Speaker Output (-) (UQF) D-GN
10 Right Front Low Level Audio Signal (-) (UQA or UQS) L-GN
11 Drain Wire (UQA or UQS) BARE
13 Low Speed GMLAN Serial Data D-GN

Radio X2, 16-pin 7283-9282-30

Pin Function Wire colour
1 Left Audio Signal (+) (U2K or UBS) BN/WH
2 Right Audio Signal (+) (U2K or UBS) D-GN/WH
3 Drain Wire (UQA or UQS) BARE
5 Left Rear Low Level Audio Signal (+) (without UQF without UK6) BN/WH
5 Left Rear Speaker Output (+) (UQF without UK6) BN
6 Right Rear Speaker Output (+) (UQF without UK6) D-BU
6 Right Rear Low Level Audio Signal (+) (without UQF without UK6) D-BU
7 Remote Playback Device Left Audio Signal (UE1) OG/BK
8 Radio Audio Mute Signal (without UQF) OG
9 Left Audio Signal (-) (U2K or UBS) TN/WH
10 Right Audio Signal (-) (U2K or UBS) GY
11 Drain Wire (U2K or UBS) BARE
13 Left Rear Low Level Audio Signal (-) (UK6 without UQF) BN
13 Left Rear Speaker Output (-) (UQF without UK6) YE
14 Right Rear Low Level Audio Signal (-) (UK6 without UQF) TN
14 Right Rear Speaker Output (-) (UQF without UK6) L-BU
15 Remote Playback Device Audio Common Signal (UE1) L-BU

Radio X3 (U42), 16-pin 7283-9283-40

Pin Function Wire colour
1 Auxiliary Audio Left Signal YE
2 Auxiliary Audio Right Signal WH
3 Left DVD Audio Signal (+) L-BU
4 Right DVD Audio Signal (+) WH
5 Remote Infrared Signal (+) OG/BK
6 Video Bright Control PK/BK
7 DVD Video Signal (+) D-GN
8 Auxiliary Video High Signal PU
9 Drain Wire BARE
10 Video Module Signal L-GN/BK
11 DVD Audio Common PU
12 DVD Audio Shield BARE
13 Remote Infrared Signal (-) TN/WH
14 DVD Video Drain Wire BARE
15 DVD Video Signal (-) WH/BK
16 Drain Wire BARE

Radio X4 (U3R or UVB or UZR), 16-pin 7283-9284-80

Pin Function Wire colour
3 Center Speaker High D-BU
4 Subwoofer Speaker High WH
5 Vehicle Speed Signal D-GN/WH
6 Camera Signal 2 (+) (UVC) 0PK
7 Camera Signal 2 (UVC) L-BU
11 Center Speaker Low OG
12 Subwoofer Speaker Low PK
13 Ground BARE
Chevrolet (2007-2012), GMC (option US8) Head Unit

p/n 15202715, 15868808, 15909951, 19117319, 20918429, 20934592, 20968153, 25782841, 25799567, 25865029, 25941137, 25941919, 25941921, 25974801?

Connector overview

Radio X1 (OEM 15488568, Service 88988743 connector)
Radio X2 (OEM 15491285, Service 15136073 connector)

Radio X1 (OEM 15488568, Service 88988743 connector)

Pin Function Wire colour
1 Battery Positive Voltage RD/WH
2 Left Front Speaker Output (+) (UQ3) TN
2 Left Front Low Level Audio Signal (+) (UQA or UQS) TN
3 Right Front Speaker Output (+) (UQ3) L-GN
3 Right Front Low Level Audio Signal (+) (UQA or UQS) L-GN/WH
4 Voice Recognition Audio Signal (UE1 with U3R, U3U or UVB) PK
4 Voice Recognition Audio Signal (UVC without UE1) GY
5 Low Reference (UE1) 0.35 PK/BK
5 Low Reference (UVC without UE1) PK/BK
6 Entertainment Remote Enable Signal WH
7 LED Backlight Dimming Control YE
8 Ground BK
9 Left Front Speaker Output (-) (HP2 with UQ3) GY
9 Left Front Speaker Output (-) (with UQ3, except HP2) GY
9 Left Front Low Level Audio Signal (-) (UQA or UQS) D-GN
10 Right Front Speaker Output (-) (HP2 with UQ3) D-GN
10 Right Front Speaker Output (-) (with UQ3, except HP2) D-GN
10 Front Low Level Audio Signal (-) (UQA or UQS) OG/BK
11 Drain Wire (UQA or UQS) BARE
13 Low Speed GMLAN Serial Data D-GN

Radio X2 (OEM 15491285, Service 15136073 connector)

Pin Function Wire colour
1 Remote Radio Left Audio Signal (U2K) BN/WH
2 Remote Radio Right Audio Signal (U2K) D-GN/WH
3 Drain Wire (with UQA, UQS or UK6) BARE
4 DVD Video Signal 2 (+) (DNU) L-GN
5 Left Rear Speaker Output (+) (HP2 with UQ3) BN
5 Left Rear Speaker Output (+) (with UQ3, except HP2) BN
5 Left Rear Low Level Audio Signal (+) (UQA or UQS) BN/WH
6 Right Rear Speaker Output (+) (HP2 with UQ3) D-BU
6 Right Rear Speaker Output (+) (with UQ3, except HP2) D-BU
6 Right Rear Low Level Audio Signal (+) (UQA or UQS) D-BU
7 Cellular Telephone Voice Signal (UE1) D-BU
8 Amplifier Control (with UQA, except Y91) OG
9 Remote Radio Left Audio Output (-) (U2K) TN/WH
10 Remote Radio Right Audio Signal (U2K) GY
11 Drain Wire (HP2 with U2K) BARE
11 Drain Wire (with U2K, except HP2) BARE
12 DVD Video Signal 2 (-) (DNU) WH
13 Left Rear Speaker Output (-) (HP2 with UQ3) YE
13 Left Rear Speaker Output (-) (with UQ3, except HP2) YE
13 Left Rear Low Level Audio Signal (-) (UQA or UQS) BN
14 Right Rear Speaker Output (-) (HP2 with UQ3) L-BU
14 Right Rear Speaker Output (-) (with UQ3, except HP2) L-BU
14 Right Rear Low Level Audio Signal (-) (UQA or UQS) TN
15 Low Reference (UE1) L-BU/BK
16 Video Mode 2 Signal (DNU) D-GN/WH
Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IO4, IO5, IO6 Radio Unit

p/n 84278530, 84361174, 84278524, 84361176, 84361178, 84361172

Connector overview

20-way 15491304 (15126710) connector (all models)
8-way 13551679 (19115653) connector
16-way 10847013 (89047090) connector

20-way 15491304 (15126710) connector (all models)

Pin Function Wire colour
1 Ground BK
2 N/C GY/BN
3 N/C BN
4 Camera Signal 2 · IO3 WH/BU
4 Low Speed GMLAN Serial Data #2 · IOB GY/GN
5 Camera Signal 2 + GY/YE
6 Voice Recognition Audio Low Reference · IOB+UE1 BK/GY
6 Cellular Telephone Microphone Low Reference · IOB-UE1 BK/BN
6 Auxiliary Audio Screen 2 · MCR/USR+IO3+D09 BARE
7 Voice Recognition Audio Signal · IOB+UE1 GY/YE
7 Cellular Telephone Microphone Signal · IOB-UE1 BU
7 Auxiliary Detection Signal · MCR/USR+IO3+D09 BU
8 Display Radio Bank Switch Signal 2 · IOB BN/GN
8 Auxiliary Audio Common Signal · MCR/USR+IO3+D09 VT
9 Left Auxiliary Audio Signal 2 · MCR/USR+IO3+D09 GY
9 Cellular Telephone Voice Low Reference · UE1+IOB BK/YE
10 Right Auxiliary Audio Signal 2 · MCR/USR+IO3+D09 GN
10 Cellular Telephone Voice Signal · UE1+IOB YE
11 Battery Positive Voltage RD/VT
13 Local Interconnect Network Serial Data Bus 10 GN/BU
14 Low Speed GMLAN Serial Data #2 · IO3/IO4/IO5/IO6-IOB GY/GN
14 Camera Signal 2 · IOB WH/BU
15 Camera Signal 2 + GY/YE
16 Auxiliary Audio Screen 2 BARE
17 Auxiliary Detection Signal BU
18 Auxiliary Audio Common Signal VT
19 Left Auxiliary Audio Signal 2 · IOB GY
19 Cellular Telephone Voice Low Reference · -IOB BK/YE
20 Right Auxiliary Audio Signal 2 · IOB GN
20 Cellular Telephone Voice Signal · -IOB YE

8-way 13551679 (19115653) connector

Pin Function Wire colour
1 MOST Serial Data (-) WH/L-GN
2 MOST Serial Data (+) GY/VT
3 MOST Serial Data (-) WH/L-GN
4 MOST Serial Data (+) GY/VT
7 MOST Control WH/VT

16-way 10847013 (89047090) connector

Pin Function Wire colour
1 Left Front Speaker Control (+) 1 BU
2 Right Front Speaker Control (+) 1 YE
3 Left Rear Speaker Control (+) GN
4 Right Rear Speaker Control (+) WH
8 Battery Positive Voltage RD/VT
9 Left Front Speaker Signal (-) 1 BN/BU
10 Right Front Speaker Signal (-) 1 YE/BK
11 Left Rear Speaker Signal (-) GN/BK
12 Right Rear Speaker Signal (-) BU/BK
16 Ground BK
Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IOB Radio Unit

p/n 42645338, 42645351

Connector overview

20-way 15491304 (15126710) connector
20-way 15491305 (15126709) connector

20-way 15491304 (15126710) connector

Pin Function Wire colour
1 Ground BK
2 N/C GY/BN
3 N/C BN
4 Low Speed GMLAN Serial Data #2 · IOB GY/GN
5 Camera Signal 2 + GY/YE
6 Voice Recognition Audio Low Reference · IOB+UE1 BK/GY
6 Cellular Telephone Microphone Low Reference · IOB-UE1 BK/BN
7 Voice Recognition Audio Signal · IOB+UE1 GY/YE
7 Cellular Telephone Microphone Signal · IOB-UE1 BU
8 Display Radio Bank Switch Signal 2 · IOB BN/GN
9 Cellular Telephone Voice Low Reference · UE1+IOB BK/YE
10 Cellular Telephone Voice Signal · UE1+IOB YE
11 Battery Positive Voltage RD/VT
13 Local Interconnect Network Serial Data Bus 10 GN/BU
14 Camera Signal 2 · IOB WH/BU
15 Camera Signal 2 + GY/YE
16 Auxiliary Audio Screen 2 BARE
17 Auxiliary Detection Signal BU
18 Auxiliary Audio Common Signal VT
19 Left Auxiliary Audio Signal 2 · IOB GY
20 Right Auxiliary Audio Signal 2 · IOB GN

20-way 15491305 (15126709) connector

Pin Function Wire colour
3 Radio On Signal GY
4 LCD Dimming Signal VT/GY
5 Display Radio Bank Switch Dim Signal GY/D-BU
6 Video Display Request Signal BN/L-GN
7 Navigation Display Reset Signal BN/L-GN
8 Radio Volume Up Signal D-BU
9 Radio Volume Down Signal GY/BN
10 Ground BK
11 Right Rear Speaker Control (+) WH
12 Right Rear Speaker Signal (-) D-BU/BK
13 Left Rear Speaker Control (+) L-GN
14 Left Rear Speaker Signal (-) L-GN/BK
15 Right Front Speaker Signal (-) YE/BK
16 Right Front Speaker Control (+) 1 YE
17 Left Front Speaker Signal (-) 1 BN/D-BU
18 Left Front Speaker Control (+) 1 D-BU
20 Battery Positive Voltage RD/VT
Chevrolet (2018-2021) Equinox, GMC Terrain IO5, IO6 Radio

p/n 84278525, 23393006, 84022422, 84102321, 84222866, 84278532, 84361175

Connector overview

Connector 1
X2 13591516 (19353873) connector
X3 89047090 connector

Connector 1

Pin Function Wire colour
1 Ground · IOB BK
2 Radio Display Backlight Low Reference · IOB BK/GN
2 Entertainment Remote Enable Signal · NKC+ UZ6+ IO5/IO6 GN/YE
3 Radio Display Backlight Dimming Control · IOB BU/GN
4 Low Speed GMLAN Serial Data #2 · IOB GY/GN
6 Voice Recognition Audio Low Reference · IOB+UE1 BK/GY
6 Cellular Telephone Microphone Low Reference · IOB-UE1 BK/BN
7 Voice Recognition Audio Signal · IOB+UE1 GY/YE
7 Cellular Telephone Microphone Signal · IOB-UE1 BU
8 Radio Keypad Button Signal · IOB VT/WH
9 Cellular Telephone Voice Low Reference · IOB+UE1 BK/YE
10 Cellular Telephone Voice Signal · IOB+UE1 YE
11 Battery Positive Voltage · IOB RD/YE
12 Entertainment Remote Enable Signal · IOB+NKC+UZ6 GN/YE
13 Local Interconnect Network Serial Data Bus 10 · IO5/IO6 GN/BU
13 Camera Low Reference · IOB+UVC SR
14 Low Speed GMLAN Serial Data #2 · IO5/IO6 GY/GN
14 Camera Signal 2 · IOB+UVC WH/BU
15 Camera Signal 2 + · IOB+UVC GY/YE
16 Auxiliary Audio Screen 2 · IOB+USR BARE
17 Auxiliary Detection Signal · IOB+USR BU
18 Auxiliary Audio Common Signal · IOB+USR VT
19 Left Auxiliary Audio Signal 2 · IOB+USR GY
19 Cellular Telephone Voice Low Reference · UE1+IO5/IO6 BK/YE
20 Right Auxiliary Audio Signal 2 · IOB+USR GN
20 Cellular Telephone Voice Signal · UE1+IO5/IO6 YE

X2 13591516 (19353873) connector

Pin Function Wire colour
1 MOST Serial Data (-) · UDD+IO5/IO6 WH/GN
2 MOST Serial Data (+) · UDD+IO5/IO6 GY/VT
3 MOST Serial Data (-) · IO5/IO6 WH/GN
4 MOST Serial Data (+) · IO5/IO6 GY/VT
6 MOST Control · IO5/IO6+UQA/UDD WH/VT

X3 89047090 connector

Pin Function Wire colour
1 Left Front Speaker Control (+) BU
2 Right Front Speaker Control (+) YE
3 Left Rear Speaker Control (+) GN
4 Right Rear Speaker Control (+) WH
8 Battery Positive Voltage · IO5/IO6 RD/YE
9 Left Front Speaker Signal (-) 1 BN/BU
10 Right Front Speaker Signal (-) 1 YE/BK
11 Left Rear Speaker Signal (-) GN/BK
12 Right Rear Speaker Signal (-) BU/BK
16 Ground · IO5/IO6 BK
Chevrolet (2018-2021) Equinox, GMC Terrain IOB Radio

p/n 42554558, 42554623, 42554558

Connector overview

Connector 1
X2 13593933 connector

Connector 1

Pin Function Wire colour
1 Ground · IOB BK
2 Radio Display Backlight Low Reference · IOB BK/GN
3 Radio Display Backlight Dimming Control · IOB BU/GN
4 Low Speed GMLAN Serial Data #2 · IOB GY/GN
6 Voice Recognition Audio Low Reference · IOB+UE1 BK/GY
6 Cellular Telephone Microphone Low Reference · IOB-UE1 BK/BN
7 Voice Recognition Audio Signal · IOB+UE1 GY/YE
7 Cellular Telephone Microphone Signal · IOB-UE1 BU
8 Radio Keypad Button Signal · IOB VT/WH
9 Cellular Telephone Voice Low Reference · IOB+UE1 BK/YE
10 Cellular Telephone Voice Signal · IOB+UE1 YE
11 Battery Positive Voltage · IOB RD/YE
12 Entertainment Remote Enable Signal · IOB+NKC+UZ6 GN/YE
13 Camera Low Reference · IOB+UVC SR
14 Camera Signal 2 · IOB+UVC WH/BU
15 Camera Signal 2 + · IOB+UVC GY/YE
16 Auxiliary Audio Screen 2 · IOB+USR BARE
17 Auxiliary Detection Signal · IOB+USR BU
18 Auxiliary Audio Common Signal · IOB+USR VT
19 Left Auxiliary Audio Signal 2 · IOB+USR GY
20 Right Auxiliary Audio Signal 2 · IOB+USR GN

X2 13593933 connector

Pin Function Wire colour
3 Radio Keypad Power Signal · IOB BN/WH
4 Radio Display Low Voltage Differential Signaling Lock Signal · IOB BN
5 Radio Display Low Voltage Differential Signaling Error Signal GY/VT
6 Radio Display Touch Interrupt Request Signal · IOB GY/BU
7 Radio Display Diagnostic Signal · IOB WH
8 Radio Volume Up Signal · IOB BU
9 Radio Volume Down Signal · IOB GY/BN
10 Ground · IOB BK
11 Right Rear Speaker Control (+) WH
12 Right Rear Speaker Signal (-) BU/BK
13 Left Rear Speaker Control (+) GN
14 Left Rear Speaker Signal (-) GN/BK
15 Right Front Speaker Signal (-) YE/BK
16 Right Front Speaker Control (+) YE
17 Left Front Speaker Signal (-) BN/BU
18 Left Front Speaker Control (+) BU
20 Battery Positive Voltage · IOB RD/YE
Chevrolet (2018-2021) Equinox, GMC Terrain IOR Radio

p/n 84667777, 84236499, 84291471, 84371476, 84388713, 84405619, 84479963, 84610619. Also p/n 84479964, 84405620, 84667778, 84479964, 84610621?

Connector overview

X1 160014-0002 (13506123) connector
X2 160014-0003 (13506123) connector

X1 160014-0002 (13506123) connector

Pin Function Wire colour
1 Battery Positive Voltage RD/YE
2 Battery Positive Voltage RD/YE
3 Ground BK
4 Radio Keypad Voltage Reference BU/RD
5 Radio Display Backlight Low Reference BK/GN
6 Ground BK
8 Left Rear Speaker Signal (-) · IOR+UZ6 GN/BK
9 Radio Display Touch Interrupt Request Signal GY/BU
11 Backup Lamp Control GN/WH
12 Low Speed GMLAN Serial Data #2 GY/GN
15 Radio Keypad Dimming Control BU/GY
21 Navigation Display Dimming Control GY/VT
22 Radio Display Backlight Dimming Control BU/GN
23 Crankshaft Position Sensor Replicated Signal VT/BU
24 Radio Keypad Power Signal BN/WH
25 Radio Keypad Button Signal VT/WH
26 Radio Volume Up Signal BU
27 Radio Volume Down Signal GY/BN

X2 160014-0003 (13506123) connector

Pin Function Wire colour
1 Battery Positive Voltage · IOR RD/YE
1 Left Rear Speaker Control (+) · IOR+UZ6 GN
2 Battery Positive Voltage · IOR RD/YE
2 Left Front Speaker Control (+) 1 · IOR+UZ6 BU
3 Ground · IOR BK
3 Right Front Speaker Signal (-) 1 · IOR+UZ6 YE/BK
3 Right Front Speaker Control (+) 1 · UZ6+NKC-IOR YE
4 Radio Keypad Voltage Reference · IOR BU/RD
4 Right Rear Speaker Signal (-) · IOR+UZ6 BU/BK
5 Radio Display Backlight Low Reference · IOR BK/GN
5 Left Front Speaker Signal (-) 1 · IOR+UZ6 BN/BU
6 Ground · IOR BK
6 Right Front Speaker Signal (-) 1 · IOR+UZ6 YE/BK
6 Right Front Speaker Control (+) 1 · UZ6+NKC-IOR YE
8 Right Rear Speaker Control (+) · IOR+UZ6 WH
9 Radio Display Touch Interrupt Request Signal · IOR GY/BU
9 Voice Recognition Audio Low Reference · IOR+UE1 BK/BN
9 Cellular Telephone Microphone Low Reference · IOR-UE1 BK/GY
10 Voice Recognition Audio Signal · IOR+UE1 GY/YE
10 Cellular Telephone Microphone Signal · IOR-UE1 BU
11 Backup Lamp Control · IOR GN
12 Low Speed GMLAN Serial Data #2 · IOR GY/GN
12 Camera Signal 2 + · IOR+UVC GY/YE
13 Camera Signal 2 · IOR+UVC WH/BU
14 Noise Reduction Microphone #4 Return · IOR WH/GN
15 Noise Reduction Microphone #4 Signal VT/BU
20 Noise Reduction Microphone 3 Low Reference · IOR GY/BN
21 Noise Reduction Microphone 3 Signal · IOR GY/BU
22 Noise Reduction Microphone 2 Low Reference · IOR BU/BK
23 Crankshaft Position Sensor Replicated Signal · IOR VT/BU
24 Radio Keypad Power Signal · IOR BN/WH
25 Radio Keypad Button Signal · IOR VT/WH
26 Radio Volume Up Signal · IOR BU
27 Noise Reduction Microphone 1 Signal · IOR GN/BN
28 Noise Reduction Microphone 1 Low Reference · IOR GN/BK
29 Noise Reduction Microphone 2 Signal · IOR BU/YE
Chevrolet (2018-2021) Equinox, GMC Terrain IOS, IOT, IOU Radio

Connector overview

X1 160014-0004 connector
X2 160014-0001 connector

X1 160014-0004 connector

Pin Function Wire colour
1 Battery Positive Voltage · IOS/IOT/IOU RD/YE
2 Battery Positive Voltage · IOS/IOT/IOU RD/YE
3 Ground · IOS/IOT/IOU BK
6 Ground · IOS/IOT/IOU BK
8 Left Rear Speaker Signal (-) · NKC+UZ6+IOS/IOU GN/BK
9 Cellular Telephone Microphone Signal · IOS/IOT/IOU-UE1 BU
9 Voice Recognition Audio Signal · UE1+IOS/IOT/IOU GY/YE
10 Cellular TelephoneMicrophone Low Reference · IOS/IOT/IOU-UE1 BK/BN
10 Voice Recognition Audio Low Reference · UE1+IOS/IOT/IOU BK/GY
11 Microphone (+) Signal VT/YE
12 Microphone (-) Low Reference · IOS/IOT/IOU BU/BK
14 Camera Signal 2 + GY/YE
15 Camera Signal 2 WH/BU

X2 160014-0001 connector

Pin Function Wire colour
1 Left Rear Speaker Control (+) · NKC+UZ6+IOS/IOU GN
2 Left Front Speaker Control (+) 1 · NKC+UZ6+IOS/IOU BU
3 Right Front Speaker Signal (-) 1 · NKC+UZ6+IOS/IOU YE/BK
4 Right Rear Speaker Signal (-) · NKC+UZ6+IOS/IOU BU/BK
5 Left Front Speaker Signal (-) 1 · NKC+UZ6+IOS/IOU BN/BU
6 Right Front Speaker Control (+) 1 · NKC+UZ6+IOS/IOU YE
8 Right Rear Speaker Control (+) · NKC+UZ6+IOS/IOU WH
9 High Speed GMLAN Serial Data (-) 9 · IOS/IOT/IOU-UE1 WH/GN
9 High Speed GMLAN Serial Data (+) 9 · UE1+IOS/IOT/IOU BU/GN
10 High Speed GMLAN Serial Data (+) 9 · IOS/IOT/IOU-UE1 BU/GN
10 High Speed GMLAN Serial Data (-) 9 · UE1+IOS/IOT/IOU WH/GN
11 High Speed GMLAN Serial Data (+) 9 · IOS/IOT/IOU BU/GN
12 High Speed GMLAN Serial Data (-) 9 · IOS/IOT/IOU WH/GN
13 Backup Lamp Control · IOS/IOT/IOU GN/WH
14 Entertainment Remote Enable Signal · NKC+UZ6+IOS/IOU GN/YE
18 Low Speed GMLAN Serial Data #2 · IOS/IOT/IOU GY/GN
20 Local Interconnect Network Serial Data Bus 10 · IOS/IOT/IOU GN/BU
24 Local Interconnect Network Serial Data Bus 5 · IOS/IOT/IOU GN/WH
28 Serial Data Communication Enable · IOS/IOT/IOU WH/BU
Chevrolet (2019-2022) Colorado, GMC Canyon IOR Radio Unit

p/n 84799522, 84785821

Connector overview

X1 160014-0002 (13506123) connector
X2 160014-0003 (13506123) connector (UQ3 only)

X1 160014-0002 (13506123) connector

Pin Function Wire colour
1 Battery Positive Voltage RD/VT
2 Battery Positive Voltage RD/VT
3 Signal Ground BK/WH
4 Radio Keypad Voltage Reference L-BU/RD
5 Radio Display Backlight Low Reference BK/L-GN
6 Signal Ground BK/WH
8 Left Rear Speaker Signal (-) L-GN/BK
9 Radio Display Touch Interrupt Request Signal GY/L-BU
11 Backup Lamp Control L-GN/WH
12 Low Speed GMLAN Serial Data #2 GY/L-GN
15 Radio Keypad Dimming Control L-BU/GY
21 Navigation Display Dimming Control GY/VT
22 Radio Display Backlight Dimming Control L-BU/LGN
24 Radio Keypad Power Signal BN/WH
25 Radio Keypad Button Signal VT/WH
26 Radio Volume Up Signal L-BU
27 Radio Volume Down Signal GY/BN

X2 160014-0003 (13506123) connector (UQ3 only)

Pin Function Wire colour
1 Left Rear Speaker Control (+) L-GN
2 Left Front Speaker Control (+) 1 L-BU
3 Right Front Speaker Control (+) 1 YE
4 Right Rear Speaker Signal (-) L-BU/BK
5 Left Front Speaker Signal (-) 1 BN/L-BU
6 Right Front Speaker Signal (-) 1 YE/BK
8 Right Rear Speaker Control (+) WH
9 Voice Recognition Audio Low Reference BK/GY
10 Voice Recognition Audio Signal GY/YE
12 Camera Signal 2 + GY/YE
13 Camera Signal 2 WH/L-BU
Chevrolet (2019-2022) Colorado, GMC Canyon IOS, IOT Radio Unit

p/n 84837226, 84629163, 84677840, 84732961. Also for 84633619, 84637574, 84652449, 84513126, 84633332?

Connector overview

X1 , 160014-0004 (13506123) connector
X2, 160014-0001 (19355494) connector (UQ3 only)

X1 , 160014-0004 (13506123) connector

Pin Function Wire colour
1 Battery Positive Voltage RD/VT
2 Battery Positive Voltage RD/VT
3 Signal Ground BK/WH
6 Signal Ground BK/WH
8 Left Rear Speaker Signal (-) L-GN/BK
9 Voice Recognition Audio Signal GY/YE
10 Voice Recognition Audio Low Reference BK/GY
11 Microphone (+) Signal VT/YE
12 Microphone (-) Low Reference L-BU/BK

X2, 160014-0001 (19355494) connector (UQ3 only)

Pin Function Wire colour
1 Left Rear Speaker Control (+) L-GN
2 Left Front Speaker Control (+) 1 L-BU
3 Right Front Speaker Signal (-) 1 YE/BK
4 Right Rear Speaker Signal (-) L-BU/BK
5 Left Front Speaker Signal (-) 1 BN/L-BU
6 Right Front Speaker Control (+) 1 YE
8 Right Rear Speaker Control (+) WH
9 High Speed GMLAN Serial Data (+) 9 L-BU/LGN
10 High Speed GMLAN Serial Data (-) 9 WH/L-GN
11 High Speed GMLAN Serial Data (+) 9 L-BU/LGN
12 High Speed GMLAN Serial Data (-) 9 WH/L-GN
13 Backup Lamp Control L-GN/WH
18 Low Speed GMLAN Serial Data #2 GY/L-GN
28 Serial Data Communication Enable WH/L-BU
Buick (2007-2012) Enclave, GMC Acadia, Chevrolet Traverse, Saturn Outlook Bose Amplifier

p/n 25907216, 25796753

Connector overview

Connector 1
Connector 2
Connector 3

Connector 1

Pin Function Wire colour
1 Left Front Speaker Output (-) GY
3 Subwoofer Speaker Output (-) L-GN/BK
4 Battery Positive Voltage RD/WH
5 Left Front Speaker Output (+) TN
7 Subwoofer Speaker Output (+) D-BU/WH
8 Ground BK/WH

Connector 2

Pin Function Wire colour
1 Right Rear Speaker Output (-) L-BU
2 Right Rear Speaker Output (+) D-BU
3 Front Center Speaker Output (-) L-BU
4 Front Center Speaker Output (+) YE
5 Left Rear Midrange Speaker Output (-) WH
6 Left Rear Midrange Speaker Output (+) TN
7 Right Front Speaker Output (-) D-GN
8 Right Front Speaker Output (+) L-GN
15 Left Rear Speaker Output (+) BN
16 Left Rear Speaker Output (-) YE

Connector 3

Pin Function Wire colour
1 Subwoofer Low Level Audio Signal (UQS) WH
2 Center Channel Low Level Audio Signal (-) (UQS) OG
3 Center Channel Low Level Audio Signal (UQS) D-BU
4 Right Rear Low Level Audio Signal (-) (without UK6) TN
4 Right Rear Low Level Audio Signal (-) (UK6) TN/WH
5 Left Rear Low Level Audio Signal (-) (UK6) BN
5 Left Rear Low Level Audio Signal (-) (without UK6) BN
6 Right Front Low Level Audio Signal (-) L-GN
7 Left Front Low Level Audio Signal (-) D-GN
8 Entertainment Remote Enable Signal WH
9 Subwoofer Low Level Audio (-) (UQS) PK
11 Radio Audio Mute Signal OG
12 Right Rear Low Level Audio Signal (+) (without UK6) D-BU
12 Right Rear Low Level Audio Signal (+) (UK6) L-GN
13 Left Rear Low Level Audio Signal (+) (without UK6) BN/WH
13 Left Rear Low Level Audio Signal (+) (UK6) L-BU
14 Right Front Low Level Audio Signal (+) L-GN/WH
15 Left Front Low Level Audio Signal (+) TN
Chevrolet (2007-2014), Cadillac, GMC 6 channel amplifier (UQA w/o Y91)

p/n 15186663 ?

Connector overview

Audio Amplifier X1 (OEM 15491289, Service 19115652 connector)
Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)
Audio Amplifier X3 (UQA, except Y91), OEM 15491285 Service 15136073 connector

Audio Amplifier X1 (OEM 15491289, Service 19115652 connector)

Pin Function Wire colour
2 Right Subwoofer Speaker Output (-) L-BU/BK
3 Left or Rear Subwoofer Speaker Output (-) L-GN/BK
4 Battery Positive Voltage RD/WH
6 Right Subwoofer Speaker Output (+) D-GN
7 Left or Rear Subwoofer Speaker Output (+) D-BU/WH
8 Ground BK

Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)

Pin Function Wire colour
1 Right Front Speaker Output (-) D-GN
2 Right Front Speaker Output (+) L-GN
3 Left Front Speaker Output (-) GY
4 Left Front Speaker Output (+) TN
5 Right Rear Speaker Output (-) L-BU
6 Right Rear Speaker Output (+) D-BU
7 Left Rear Speaker Output (-) YE
8 Left Rear Speaker Output (+) BN

Audio Amplifier X3 (UQA, except Y91), OEM 15491285 Service 15136073 connector

Pin Function Wire colour
4 Right Rear Low Level Audio Signal (-) TN
5 Left Rear Low Level Audio Signal (-) BN
6 Right Front Low Level Audio Signal (-) OG/BK
7 Left Front Low Level Audio Signal (-) D-GN
8 Entertainment Remote Enable Signal WH
11 Amplifier Control OG
12 Right Rear Low Level Audio Signal (+) D-BU
13 Left Rear Low Level Audio Signal (+) BN/WH
14 Right Front Low Level Audio Signal (+) L-GN/WH
15 Left Front Low Level Audio Signal (+) TN
Chevrolet (2007-2014), Cadillac, GMC 9 channel amplifier (UQA with Y91)

p/n 15937318, 20808897

Connector overview

Audio Amplifier X1 (OEM 15491286, Service 88988652 connector)
Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)
Audio Amplifier X3 (OEM 15491285, Service 15136073 connector)

Audio Amplifier X1 (OEM 15491286, Service 88988652 connector)

Pin Function Wire colour
1 Left or Rear Subwoofer Speaker Output (+) D-BU/WH
2 Left or Rear Subwoofer Speaker Output (-) L-GN/BK
3 Right Subwoofer Speaker Output (-) L-BU/BK
4 Battery Positive Voltage RD/WH
7 Right Subwoofer Speaker Output (+) D-GN
8 Ground BK

Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)

Pin Function Wire colour
1 Low Speed GMLAN Serial Data D-GN
2 Right Rear Midrange Speaker Output (-) OG
3 Right Rear Midrange Speaker Output (+) TN/WH
4 Left Front Speaker Output (+) TN
5 Left Front Speaker Output (-) GY
6 Right Front Speaker Output (-) D-GN
7 Right Front Speaker Output (+) L-GN
8 Right Rear Speaker Output (-) L-BU
10 Left Rear Midrange Speaker Output (-) WH
11 Left Rear Midrange Speaker Output (+) TN
12 Front Center Speaker Output (-) L-BU
13 Front Center Speaker Output (+) YE/BK
14 Left Rear Speaker Output (-) YE
15 Left Rear Speaker Output (+) BN
16 Right Rear Speaker Output (+) D-BU

Audio Amplifier X3 (OEM 15491285, Service 15136073 connector)

Pin Function Wire colour
3 Right Front Low Level Audio Signal (+) L-GN/WH
4 Right Front Low Level Audio Signal (-) OG/BK
5 Amplifier Audio Prompt Signal (-) GY
6 Drain Wire BARE
11 Left Front Low Level Audio Signal (+) TN
12 Left Front Low Level Audio Signal (-) D-GN
13 Amplifier Audio Prompt Signal (+) PU
14 Noise Compensation Microphone Control D-GN
Chevrolet (2007-2014), Cadillac, GMC 9-channel luxury amplifier (UQS)

p/n 15937320, 20808898, 25939529, 25937990

Connector overview

Audio Amplifier X1 (OEM 15491286, Service 88988652 connector)
Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)
Audio Amplifier X3 (OEM 15491285, Service 15136073 connector)
Audio Amplifier X4 (OEM 15466054, Service 15136074 connector)

Audio Amplifier X1 (OEM 15491286, Service 88988652 connector)

Pin Function Wire colour
1 Left or Rear Subwoofer Speaker Output (+) D-BU/WH
2 Left or Rear Subwoofer Speaker Output (-) L-GN/BK
3 Right Subwoofer Speaker Output (-) L-BU/BK
4 Battery Positive Voltage RD/WH
7 Right Subwoofer Speaker Output (+) D-GN
8 Ground BK

Audio Amplifier X2 (OEM 15489823, Service 15134091 connector)

Pin Function Wire colour
1 Low Speed GMLAN Serial Data D-GN
2 Right Rear Midrange Speaker Output (-) OG
3 Right Rear Midrange Speaker Output (+) TN/WH
4 Left Front Speaker Output (+) TN
5 Left Front Speaker Output (-) GY
6 Right Front Speaker Output (-) D-GN
7 Right Front Speaker Output (+) L-GN
8 Right Rear Speaker Output (-) L-BU
10 Left Rear Midrange Speaker Output (-) WH
11 Left Rear Midrange Speaker Output (+) TN
12 Front Center Speaker Output (-) L-BU
13 Front Center Speaker Output (+) YE/BK
14 Left Rear Speaker Output (-) YE
15 Left Rear Speaker Output (+) BN
16 Right Rear Speaker Output (+) D-BU

Audio Amplifier X3 (OEM 15491285, Service 15136073 connector)

Pin Function Wire colour
3 Right Front Low Level Audio Signal (+) L-GN/WH
4 Right Front Low Level Audio Signal (-) OG/BK
5 Amplifier Audio Prompt Signal (-) GY
6 Drain Wire BARE
11 Left Front Low Level Audio Signal (+) TN
12 Left Front Low Level Audio Signal (-) D-GN
13 Amplifier Audio Prompt Signal (+) PU
14 Noise Compensation Microphone Control D-GN

Audio Amplifier X4 (OEM 15466054, Service 15136074 connector)

Pin Function Wire colour
3 Right Rear Low Level Audio Signal (+) D-BU
4 Right Rear Low Level Audio Signal (-) TN
5 Subwoofer Low Level Audio Signal (+) WH
6 Subwoofer Low Level Audio Signal (-) PK
7 CKP Signal High (Y91) WH/BK
8 CKP Signal Low (Y91) PU/WH
11 Left Rear Low Level Audio Signal (+) BN/WH
12 Left Rear Low Level Audio Signal (-) BN
13 Center Channel Low Level Audio Signal (+) D-BU
14 Center Channel Low Level Audio Signal (-) OG
Chevrolet (2018-2021) Equinox, GMC Terrain amplifier

p/n 84504789, 84308620, 84813310

Connector overview

X1 15134093 connector
X2 89047090 connector
X3 15136073 connector
X4 15136074 connector

X1 15134093 connector

Pin Function Wire colour
1 Right Front Speaker Control (+) YE
3 Left Front Speaker Control (+) · LHD BU
3 Entertainment Remote Enable Signal · UQA GN/YE
4 Battery Positive Voltage RD/VT
5 Right Front Speaker Signal (-) YE/BK
7 Left Front Speaker Signal (-) BN/BU
8 Ground BK

X2 89047090 connector

Pin Function Wire colour
1 Left Front Speaker Control (+) BU
2 Right Front Tweeter Speaker (-) Low Reference VT/BN
3 Front Center Speaker Control (+) · UQA+IO5/IO6 YE/WH
3 Left Front Tweeter Speaker Control (+) · UQA+IOS/IOT/IOU YE/BU
4 Right Front Tweeter Speaker Control (+) · UQA+IO5/IO6 BN/GN
4 Right Rear Speaker Control (+) · UQA+IOS/IOT/IOU WH
5 Left Front Tweeter Speaker Control (+) · UQA+IO5/IO6 YE/BU
5 Left Rear Speaker Control (+) · UQA+IOS/IOT/IOU GN
6 Right Rear Speaker Control (+) · UQA+IO5/IO6 WH
7 Left Rear Speaker Control (+) · UQA+IO5/IO6 GN
7 Front Center Speaker Control (+) · UQA+IOS/IOT/IOU YE/WH
9 Left Front Speaker Signal (-) BN/BU
10 Right Front Tweeter Speaker Control (+) · UQA+IOS/IOT/IOU BN/GN
11 Front Center Speaker (-) Low Reference · UQA+IO5/IO6 BU/YE
11 Left Front Tweeter Speaker (-) Low Reference · UQA+IOS/IOT/IOU YE/GY
12 Right Front Tweeter Speaker (-) Low Reference · UQA+IO5/IO6 VT/BN
12 Right Rear Speaker Signal (-) · UQA+IOS/IOT/IOU BU/BK
13 Left Front Tweeter Speaker (-) Low Reference · UQA+IO5/IO6 YE/GY
13 Left Rear Speaker Signal (-) · UQA+IOS/IOT/IOU GN/BK
14 Right Rear Speaker Signal (-) · UQA+IO5/IO6 BU/BK
15 Left Rear Speaker Signal (-) · UQA+IO5/IO6 GN/BK
15 Front Center Speaker (-) Low Reference · UQA+IOS/IOT/IOU BU/YE

X3 15136073 connector

Pin Function Wire colour
1 Low Speed GMLAN Serial Data #2 · IOT/IOU/IOS+UQA GY/GN

X4 15136074 connector

Pin Function Wire colour
3 MOST Serial Data (-) · UQA+IO5/IO6 WH/GN
3 Ethernet Bus 6 (+) · UQA+IOT/IOU/IOS GY/BK
4 MOST Serial Data (+) · UQA+IO5/IO6 GY/VT
4 Ethernet Bus 6 (-) · UQA+IOT/IOU/IOS BN/BK
5 MOST Serial Data (-) · UQA+IO5/IO6 WH/GN
6 MOST Serial Data (+) · UQA+IO5/IO6 GY/VT
14 MOST Control · UQA+IO5/IO6 WH/VT
GM (2003-2005) BOSE Amplifier

p/n 15199884, 15191601, 15199992, 15114454

Connector overview

24 pin 12110088 connector
8 pin 12110626 connector

24 pin 12110088 connector

Pin Function Wire colour
A1 Right Rear Twiddler Speaker Output (+) WHT
A2 Right Rear Twiddler Speaker Output (-) YEL
A3 Left Rear Speaker Output (+) BRN
A4 Left Rear Speaker Output (-) YEL
A5 Left Front Speaker Output (+) · BRN · Left Rear Speaker Output (+) TAN
A6 Left Front Speaker Output (-) · YEL · Left Rear Speaker Output (-) GRY
A7 Right Rear Speaker Output (+) · DK BLU · Right Rear Speaker Output (+) DK BLU
A8 Right Rear Speaker Output (-) · LT BLU · Right Rear Speaker Output (-) LT BLU
A9 Right Front Speaker Output (+) · TAN · Left Front Speaker Output (+) LT GRN
A10 Right Front Speaker Output (-) · GRY · Left Front Speaker Output (-) DK GRN
A11 LT GRN · Right Front Speaker Output (+)
A12 DK GRN · Right Front Speaker Output (-)
B1 Noise Reduction Microphone Supply Voltage · GRY/BLK · Radio Mute DK GRN
B2 Drain Wire B3 · PPL · Rear Seat Audio Enable Signal LT GRN/BLK
B3 Right Front Low Level Audio Signal (-) · BLK · Right Rear Low Level Audio Signal (-) ORN/BLK
B4 Left Front Low Level Audio Signal (-) · DK BLU · Right Rear Low Level Audio Signal (+) DK GRN
B5 Left Front Low Level Audio Signal (+) · DK GRN/ WHT · Left Rear Low Level Audio Signal (-) TAN
B6 Right Front Low Level Audio Signal (+) · BRN · Left Rear Low Level Audio Signal (+) LT GRN
B7 Drain Wire · ORN/BLK · Right Front Low Level Audio Signal (-) BARE
B8 LT GRN · Right Front Low Level Audio Signal (+)
B9 DK GRN · Left Front Low Level Audio Signal (-)
B10 Amplifier Class 2 Serial Dat · TAN · Left Front Low Level Audio Signal (+) DK BLU
B11 PNK · Radio On Signal
B12 BARE · Drain Wire

8 pin 12110626 connector

Pin Function Wire colour
A Ground BLK/WHT
B Left Subwoofer Speaker Output (+) DK BLU/ WHT
C Right Subwoofer Speaker Output (+) DK GRN
E Drain Wire BARE
F Right Subwoofer Speaker Output (-) LT BLU/BLK
G Left Subwoofer Speaker Output (-) T GRN/BLK
H Battery Positive Voltage ORN
GM (2004-2009) Envoy, Trailblazer, Bravada, Saab 9-7x BOSE amplifier

p/n 15135032,15268210,15103800, PREMIUM PERFORMANCE ENHANCED AUDIO

Connector overview

Audio Amplifier C1 (w/UQA) , 12110088 Service: 15306210 connector
Audio Amplifier C2 (w/UQA) 15357040 Service: 12110626 connector

Audio Amplifier C1 (w/UQA) , 12110088 Service: 15306210 connector

Pin Function Wire colour
A5 Left Front Speaker Output (+) TN
A6 Left Front Speaker Output (-) GY
A7 Right Front Speaker Output (+) L-GN
A8 Right Front Speaker Output (-) D-GN
A9 Left Front Midrange Speaker Output (+) D-BU
A10 Left Front Midrange Speaker Output (-) L-BU
A11 Right Front Midrange Speaker Output (+) OG
A12 Right Front Midrange Speaker Output (-) D-GN
B1 Radio Mute Signal GY/BK
B2 Rear Seat Audio Enable Signal PU
B3 Right Rear Low Level Audio Signal (-) BK
B4 Right Rear Low Level Audio Signal (+) D-BU
B5 Left Rear Low Level Audio Signal (-) D-GN/WH
B6 Left Rear Low Level Audio Signal (+) BN
B7 Right Front Low Level Audio Signal (-) OG/BK
B8 Right Front Low Level Audio Signal (+) L-GN
B9 Left Front Low Level Audio Signal (-) D-GN
B10 Left Front Low Level Audio Signal (+) TN
B11 Radio On Signal PK
B12 Drain Wire BARE

Audio Amplifier C2 (w/UQA) 15357040 Service: 12110626 connector

Pin Function Wire colour
A Ground BK
B Left Rear Speaker Output (+) BN
C Right Rear Speaker Output (+) D-BU
E Drain Wire BARE
F Right Rear Speaker Output (-) L-BU
G Left Rear Speaker Output (-) YE
H Battery Positive Voltage OG
GMC (2007-2014), Chevrolet, Hummer H2 Head Unit

p/n 20807044, 25857364, 25894202, 20790838

Connector overview

Radio X1 (OEM 15488568, Service 88988743 connector)
Radio X2 (OEM 15491285, Service 15136073 connector)
Radio X3 (HP2 with U42) (13568239 connector)
Radio X4 (HP2 with UQS or with UVC) (13568240 connector)

Radio X1 (OEM 15488568, Service 88988743 connector)

Pin Function Wire colour
1 Battery Positive Voltage RD/WH
2 Left Front Speaker Output (+) (UQ3) TN
2 Left Front Low Level Audio Signal (+) (UQA or UQS) TN
3 Right Front Speaker Output (+) (UQ3) L-GN
3 Right Front Low Level Audio Signal (+) (UQA or UQS) L-GN/WH
4 Voice Recognition Audio Signal (UE1 with U3R, U3U or UVB) PK
4 Voice Recognition Audio Signal (UVC without UE1) GY
5 Low Reference (UE1) 0.35 PK/BK
5 Low Reference (UVC without UE1) PK/BK
6 Entertainment Remote Enable Signal WH
7 LED Backlight Dimming Control YE
8 Ground BK
9 Left Front Speaker Output (-) (HP2 with UQ3) GY
9 Left Front Speaker Output (-) (with UQ3, except HP2) GY
9 Left Front Low Level Audio Signal (-) (UQA or UQS) D-GN
10 Right Front Speaker Output (-) (HP2 with UQ3) D-GN
10 Right Front Speaker Output (-) (with UQ3, except HP2) D-GN
10 Front Low Level Audio Signal (-) (UQA or UQS) OG/BK
11 Drain Wire (UQA or UQS) BARE
13 Low Speed GMLAN Serial Data D-GN

Radio X2 (OEM 15491285, Service 15136073 connector)

Pin Function Wire colour
1 Remote Radio Left Audio Signal (U2K) BN/WH
2 Remote Radio Right Audio Signal (U2K) D-GN/WH
3 Drain Wire (with UQA, UQS or UK6) BARE
4 DVD Video Signal 2 (+) (DNU) L-GN
5 Left Rear Speaker Output (+) (HP2 with UQ3) BN
5 Left Rear Speaker Output (+) (with UQ3, except HP2) BN
5 Left Rear Low Level Audio Signal (+) (UQA or UQS) BN/WH
6 Right Rear Speaker Output (+) (HP2 with UQ3) D-BU
6 Right Rear Speaker Output (+) (with UQ3, except HP2) D-BU
6 Right Rear Low Level Audio Signal (+) (UQA or UQS) D-BU
7 Cellular Telephone Voice Signal (UE1) D-BU
8 Amplifier Control (with UQA, except Y91) OG
9 Remote Radio Audio Output (-) (U2K) TN/WH
10 Remote Radio Right Audio Signal (U2K) GY
11 Drain Wire (HP2 with U2K) BARE
11 Drain Wire (with U2K, except HP2) BARE
12 DVD Video Signal 2 (-) (DNU) WH
13 Left Rear Speaker Output (-) (HP2 with UQ3) YE
13 Left Rear Speaker Output (-) (with UQ3, except HP2) YE
13 Left Rear Low Level Audio Signal (-) (UQA or UQS) BN
14 Right Rear Speaker Output (-) (HP2 with UQ3) L-BU
14 Right Rear Speaker Output (-) (with UQ3, except HP2) L-BU
14 Right Rear Low Level Audio Signal (-) (UQA or UQS) TN
15 Low Reference (UE1) L-BU/BK
16 Video Mode 2 Signal (DNU) D-GN/WH

Radio X3 (HP2 with U42) (13568239 connector)

Pin Function Wire colour
1 Auxiliary Audio Left Signal YE
2 Auxiliary Audio Right Signal WH
3 Left DVD Audio Signal (+) L-BU
4 Right DVD Audio Signal (+) WH
5 Remote Infra Red Signal (+) OG/BK
6 Video Bright Control PK/BK
7 DVD Video Signal (+) D-GN
8 Auxiliary Video High Signal PU
9 Drain Wire BARE
10 Video Module Signal L-GN/BK
11 DVD Audio Common PU
12 DVD Audio Shield BARE
13 Remote Infra Red Signal (-) TN/WH
14 DVD Video Drain Wire BARE
15 DVD Video Signal (-) WH/BK
16 Video Drain Wire BARE

Radio X4 (HP2 with UQS or with UVC) (13568240 connector)

Pin Function Wire colour
3 Center Channel Low Level Audio Signal (UQS) D-BU
4 Subwoofer Low Level Audio Signal (UQS) WH
5 Vehicle Speed Signal (UVC) D-GN/WH
6 Camera Signal (+) (UVC) PK
7 Camera Signal (-) (UVC) L-BU
8 Amplifier Audio Prompt Signal (+) (UQS) PU
11 Center Channel Low Level Audio Signal (-) (UQS) OG
12 Subwoofer Low Level Audio (-) (UQS) PK
13 Drain Wire (UQS) BARE
15 Drain Wire (UQS) BARE
16 Amplifier Audio Prompt Signal (-) (UQS) GY

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