98 Grand Prix GTP

[Street Dreams CC]

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.

 

[SyntheticShield]

One of two things come to mind.

1. Ignition switch
2. Blower resistor module.

Though with what you describe I would lean more to the ignition switch as I do not think the resistor module has anything to do with the DIC screen, headlights and so on, but I believe the ignition switch does.

 

[archemedes]

yep ignition switch will do that

 

[Street Dreams CC]

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.

 

[SyntheticShield]

If it is the switch, check for BackInBlack's ignition saver modification. It will help prevent that issue in the future.

 

[Supercharged99GSE]

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....

 

[nault31]

Here is the link for the Ignition Saver Mod BTW
ClubGP Message Forum troubleshooting