2000 Grand Prix Electrical issues

[Stappen720]

wondering if anyone has any ideas of what the hell is up with the car........the running lights wont work anymore, the gauge cluster light doesnt work....the DIC doesnt work......the fog lights only work when you flick the high beams on........and when you click mode on the DIC it beeps as if you left your door open or left your lights on when u leave your car.........something is wrong........fuses are fine

 

[toolguy]

Did you check all the grounds on the car using a service manual?

Possibly the BCM is going south.

 

[thompo123]

wondering if anyone has any ideas of what the hell is up with the car........the running lights wont work anymore, the gauge cluster light doesnt work....the DIC doesnt work......the fog lights only work when you flick the high beams on........and when you click mode on the DIC it beeps as if you left your door open or left your lights on when u leave your car.........something is wrong........fuses are fine

I had to replace the multi-functional switch in my 2002 gt for around $235.00.That switch can create a series of electrical mafunctions.
My brights were running one on and one off until I changed it.
It is the switch that controls,cruise,wipers,turn signals

 

[tylerbinski]

Check harness for corrosion infront of the battery in the bundle... if so - repair wires.. had a similar issue.. my airbag light would also flash, and system voltage fluctuate occasionally

 

[Stappen720]

checked all of the above except the turn signal, cruise control switch........iv been deciding whether to replace that or not