Weird Issue!
Thread Starter
Intermediate
Joined: Sep 2024
Posts: 33
Likes: 17
From: Sacramento
Weird Issue!
Good day everyone,
My 2011 Base 6MT has a weird issue with the rear lighting. All rear lights are suddenly completely out. I have Morimoto taillights, LED reverse lights and LED fender markers and they're all out but when I lock and unlock the car with the key fob the side markers turn on but not at the full brightness. No brake lights, reverse, hazard, third brake or ide markers while the car is on. I've checked all the fuses and none are blown. No wires have been cut on this car at all even though I've added an Alpine HU. I have seen that adding a radio may send weird signals to the BCM but the car has never had any gremlins because of it. I will be checking the grounds in the back o the car today to see if there's a questionable one back there. I drove the car home last night and everything turned back on for a couple of minutes when I cycled the multi-function switch but then the lights turned off again.
Has anyone experienced anything like this? Any info would be greatly appreciated!
My 2011 Base 6MT has a weird issue with the rear lighting. All rear lights are suddenly completely out. I have Morimoto taillights, LED reverse lights and LED fender markers and they're all out but when I lock and unlock the car with the key fob the side markers turn on but not at the full brightness. No brake lights, reverse, hazard, third brake or ide markers while the car is on. I've checked all the fuses and none are blown. No wires have been cut on this car at all even though I've added an Alpine HU. I have seen that adding a radio may send weird signals to the BCM but the car has never had any gremlins because of it. I will be checking the grounds in the back o the car today to see if there's a questionable one back there. I drove the car home last night and everything turned back on for a couple of minutes when I cycled the multi-function switch but then the lights turned off again.
Has anyone experienced anything like this? Any info would be greatly appreciated!
Thread Starter
Intermediate
Joined: Sep 2024
Posts: 33
Likes: 17
From: Sacramento
Update:
I removed the battery and touched the two terminal ends of the battery connectors for 30 seconds and re-installed the battery a few hours later to let everything reset and it worked. All rear lights are back and everything is back to normal. I had a friend run his scanner and went through the BCM faults and there is nothing stored. Looks like the BCM glitched which apparently is very common on GM BCM's.
