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20 pin GM 13593932, 15491304 (15126710) Head Unit misc connector layout
20 pin GM 13593932, 15491304 (15126710) Head Unit misc connector
p/n 84278530, 84361174, 84278524, 84361176, 84361178, 84361172

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

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

 

8-way 13551679 (19115653) connector

Pin
Num
Color Signal Opt
1 WH/L-GN MOST Serial Data (-)  
2 GY/VT MOST Serial Data (+)  
3 WH/L-GN MOST Serial Data (-)  
4 GY/VT MOST Serial Data (+)  
7 WH/VT MOST Control  

 

16-way 10847013 (89047090) connector

Pin
Num
Color Signal IOB
1 BU Left Front Speaker Control (+) 1  
2 YE Right Front Speaker Control (+) 1  
3 GN Left Rear Speaker Control (+)  
4 WH Right Rear Speaker Control (+)  
8 RD/VT Battery Positive Voltage  
9 BN/BU Left Front Speaker Signal (-) 1  
10 YE/BK Right Front Speaker Signal (-) 1  
11 GN/BK Left Rear Speaker Signal (-)  
12 BU/BK Right Rear Speaker Signal (-)  
16 BK Ground  

 

Omitted pins are Not Connected.

8 pin GM 13591516 (19353873)  connector layout
8 pin GM 13591516 (19353873)  connector
According to 1 reports in our database (0 positive and 0 negative) the Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IO4, IO5, IO6 Radio Unit pinout may be incorrect.

Is this pinout

Additional connector №3

16 pin GM 7283-5534-60 (89047090) amplifier harness connector layout
16 pin GM 7283-5534-60 (89047090) amplifier harness connector
Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IO4, IO5, IO6 Radio Unit visual pinout:click to enlarge
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