c6 multiple electrical function failures
Thread Starter
3rd Gear
Joined: Jan 2019
Posts: 3
Likes: 0
c6 multiple electrical function failures
I have a 2012 GS. Car has NAV, HUD, and 3LT options with 60k miles. The drivers door will not open, telescoping column does not move, rear hatch will not open when using electrical switches. All of these functions did not stop working at the same time. First telescoping column, then rear hatch, and now driver door will not open using push button. I replaced the drivers seat wiring harness and power seat control module. And checked all fuses on the BCM. Also switched passenger door touch pad to driver door - passenger door opened with driver door touch pad. OBD2 check yielded no DTC's. Do I need to replace the BCM? Any advice is greatly appreciated.
Le Mans Master
Joined: Dec 2004
Posts: 5,491
Likes: 806
From: West coast CA
I have a 2012 GS. Car has NAV, HUD, and 3LT options with 60k miles. The drivers door will not open, telescoping column does not move, rear hatch will not open when using electrical switches. All of these functions did not stop working at the same time. First telescoping column, then rear hatch, and now driver door will not open using push button. I replaced the drivers seat wiring harness and power seat control module. And checked all fuses on the BCM. Also switched passenger door touch pad to driver door - passenger door opened with driver door touch pad. OBD2 check yielded no DTC's. Do I need to replace the BCM? Any advice is greatly appreciated.
Thread Starter
3rd Gear
Joined: Jan 2019
Posts: 3
Likes: 0
I tried all of these suggestions - no improvements. Asked friends who own and operate a repair shop to perform diagnostics through GM. No error codes found. They thought door and rear hatch latches were slow and weak to operate. I replaced each of them and they now operate normally. The telescoping steering column still does not operate. They were able to power up the drive motor by using a power circuit tester. But the column does not move by use of the switch.
Hope this info will help anyone that has these issues in the future. Apparently 60k miles or 6 years is the functional life of these electrical/mechanical components.
Hope this info will help anyone that has these issues in the future. Apparently 60k miles or 6 years is the functional life of these electrical/mechanical components.
