Picked up an '01 GTP Sedan 150k mi, a few days ago, and having some trouble with electrical systems. Looks as though a previous owner did some shoddy electrical work, mainly audio, and trying to troubleshoot, looking for advice. Never messed with a vehicle that has a BCM. RAP, HUD, and DIC do work. Aftermarket radio was replaced with my own aftermarket head, using same 21-pin harness that I used on my old car, '00 Malibu.
1) fog lights won't come on - read they only activate with parking lights or lowbeam headlights engaged, and will kick off with the high beams engaged. Nothing. Switch, relay, or other likely culprit?
2) no interior domelights - Car has sunroof, and the two press-switch style reading lights in small upper console. Haven't checked bulbs yet.
3) no taglight - changed bulb, no dice. connections on socket themselves are clean.
4) DIC flickers - the left side of the DIC will flicker, and also echoes turn signals when they are on.
5) Blower Motor remains on with key off - figure a relay went out, and someone wired it direct. troubleshooting tips?
6) weak door chime - sounds muted/distorted. replaced rear speakers, front right works, front driver side does not.
That said, I friggin love this car. Never want to drive something without a HUD again!
