Pinouts >  GM Chevrolet, Buick, Pontiac, Saturn, Cadillac OEM car audio
20 pin GM 13593932, 15491304 (15126710) Head Unit misc connector layout
20 pin GM 13593932, 15491304 (15126710) Head Unit misc connector
at the wiring harness (connector end view)
p/n 42645338, 42645351
The pinout should fit 8 devices/models. Click to list>

 

20-way 15491304 (15126710) connector

Pin
Num		 Color Signal Opt
1 BK Ground  
2 GY/BN N/C  
3 BN N/C  
4 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
7 GY/YE Voice Recognition Audio Signal IOB+UE1
BU Cellular Telephone Microphone Signal IOB-UE1 
8 BN/GN Display Radio Bank Switch Signal 2 IOB
9 BK/YE Cellular Telephone Voice Low Reference UE1+IOB
10 YE Cellular Telephone Voice Signal UE1+IOB
11 RD/VT Battery Positive Voltage  
13 GN/BU Local Interconnect Network Serial Data Bus 10  
14 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
20 GN Right Auxiliary Audio Signal 2 IOB

 

20-way 15491305 (15126709) connector

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

 

Omitted pins are Not Connected.

20 pin GM 15491305, 13593933 (15126709) Head Unit misc connector layout
20 pin GM 15491305, 13593933 (15126709) Head Unit misc connector
at the wiring harness (connector end view)
Pinout status: +1 -0
According to 1 reports in our database (1 positive and 0 negative) the Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IOB Radio Unit pinout should be correct.

Is this pinout
NO DIY devices
Chevrolet (2017-2019) Silverado, Tahoe, GMC Sierra, Yukon IOB Radio Unit visual pinout:click to enlarge
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