Hi everyone! I'm happy I found this informative forum. I have an 08 Tahoe LT1 and have been having electric issues with a lot of different symptoms. I noticed last night that the BCM fuse has been removed. I'm going to install the fuse and check that the BCM is connected. I originally thought that the Active fuel management system was the major issue but maybe not. I received the Tahoe back from a "mechanic who was supposed to replace the engine but instead tore down the cylinder head on the passenger side 4 times. He stated he couldn't fix the problem. The Tahoe lost power and went into limp mode about a year ago. There was a tapping noise on the passenger side engine immediately after the vehicle stalling after going into limp mode. The " mechanic " diagnosed it as needing a new engine. So I got the vehicle back with it being in worse shape. Symptoms:
No power on acceleration
Huge battery drain
AC not working
Headlights not working
Windshield wipers going crazy
Blinkers going on without turning on
And various other things. I'm going to check BCM connection, replace the fuse, check other fuses and then check the cables to the battery. I'm not sure they are all hooked up to where they should be. Does anyone have a diagram of where the battery cables hook up to the systems and how? I would really appreciate it! Thank you!
No power on acceleration
Huge battery drain
AC not working
Headlights not working
Windshield wipers going crazy
Blinkers going on without turning on
And various other things. I'm going to check BCM connection, replace the fuse, check other fuses and then check the cables to the battery. I'm not sure they are all hooked up to where they should be. Does anyone have a diagram of where the battery cables hook up to the systems and how? I would really appreciate it! Thank you!