Thread: 98 Grand Prix GTP

I just got this car about 2 months ago. It has a problem but it isnt all the time.
When it acts up The boost screen goes out, the rear defrost dont work, the heat only works on #5 setting, if you have the auto lights it will kick off the headlights if your on any setting but #5 or off. The boost screen sometimes will light up really dim if the heat is on #5 or off. When it doesnt act up it will work fine. All the heat settings, the lights, the screen everything.

Anyone run into this problem before I start printing out a bunch of wiring diagrams and fishing one wire at a time.

yep ignition switch will do that

It has something to do with the acc. wire. I went out and it was still acting up so I remote started it and everything worked. Put key in and shut down remote start and it stopped working. So I will check it out this week to see if it is the switch itself or wiring from it.

Thanks for the quick help to isolate the problem.

i have a99 GSE my boost screen went out awile back so i got on2 utube go2 fix guage cluster they will show u how 2 fix it its acouple resisters behind the displays....