Need pinout wiring diagrams for BCM connectors?

Tiny
TINMAN_GZ
  • MEMBER
  • 2016 GMC SIERRA
  • 50,000 MILES
After the installation of a gps with starter disable, menu control and media buttons on steering wheel no longer function. Steering wheel cruise control is functioning. The wires near the bcm have been modified so I suspect the problem is with a broken wire or a pin on a connector has been removed for testing and inserted into the wrong position in the connector. Thank you
Wednesday, May 24th, 2023 AT 7:44 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,476 POSTS
Sure, here is a guide to help you with the testing and the BCM wiring and pinout diagrams in the images below.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Thursday, May 25th, 2023 AT 9:03 AM

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