Dash Lights and Rear Running Lights Out? [Archive] - GrandAmGT.com Forum

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BRies17
11-25-2004, 09:52 PM
As I stated, my dash lights and rear running lights went out. I am pretty sure it is a fuze but I can't seem to find the one it would be. Anyone got any ideas? My service vehicle light also came on at the same time! Thanks for any help!

Irate
11-26-2004, 02:45 AM
My suggestion would be to drive to an Autozone and have your SVS read. After that, I would check your fuse pannel. Do you have a sunnroof?

BRies17
11-26-2004, 05:51 PM
Yes I have a sunroof, I went to autozone and the code reader couldn't even come up with a code. It must be a fuse right? Any location suggestions?

Irate
11-26-2004, 09:55 PM
You need to bring your car to a GM dealership. I suspect that your sunroof is leaking into your fuse block (its a common problem).

abusedgt97
11-26-2004, 11:53 PM
I wouldn't go so quick as to jump on the leaking sunroof idea. Check all the fuses, look in the owners manual for locations and identification. Check the dash fuses. If you can find the fuse and its blown replace it. If the problem persists seak further investigation. Is this a reoccuring problem?

e2helper
11-27-2004, 10:41 AM
Hmm,

Curious if your front marker lamps are also out? The fuse that controls park lamps and dash lights is located in underhood electrical center (fuse #45, I think). That is also where the relay is that controls these lamps, however if your front marker lamps are working ok and only dash lights and rear tail lamps inop then fuse is OK and you are likely looking at some wiring problems.

There is a secondary fuse for just the dash lights in one of the IP electrical centers but since you noticed the rear tail lamps out then need to go "upstream" to the park lamp fuse first.

Because the SVS telltale is on then it is something that the BCM can sense. So that helps narrow it down a bit.

So follow-up with observation on front marker lamps and if you find that fuse blown.

BRies17
11-28-2004, 12:16 AM
Yes the marker lights are out which I didn't notice, thanks for the help I will check out fuse # 45 and hopefully have a response in the morning.

e2helper
11-28-2004, 08:14 AM
If the fuse is OK then likely will be something wrong with the wire from park lamp relay to the BCM that activates the relay (or the relay itself).

If the fuse is blown then it will be a matter of isolating which lamp or wiring is shorted out. Having access to schematics of vehicle would assist a lot there. If you don't have them I can probably post a couple things somewhere if you want to dig into it further. Here are the first couple of pages of interest as a sample http://www.geocities.com/raj380/malibu_nolf/misc/2001gaextlights.pdf

BRies17
11-28-2004, 08:36 PM
Yep it's the fuse, and it keeps blowing. Thanks for the diagrams but being a rookie at car electronics they don't mean much to me. I really don't know where to start. Any more ideas before I take it to the dealer?

e2helper
11-29-2004, 08:31 PM
Well that makes it easier since it is blowing all the time - of course kind of expensive in regards to going thru fuses (LOL).

This particular fuse is probably the worst one in vehicle to troubleshoot in regards to the number of devices it "feeds"

I provided that schematic info with understanding it might be a little overwhelming - that is why I only provided a couple pages - to give you a taste.

The first thing to do is try to separate/isolate to narrow down where the problem might be.

You won't be able to fix this yourself with taking things apart and so will likely need dealer to repair. The only easy thing I could suggest would only narrow things down slightly.

If you want to give it a try - and still have some additional fuses (don't use any bigger one than what was originally in vehicle - which I think was a 15 Amp).

Have ignition OFF and headlamp switch OFF. Install a new park lamp fuse

Open passenger door and remove the fuse block cover off the end of IP.
Take a 7 mm nut driver and loosen the bolt you see holding in the wiring connector to the fuse block. The bolt is part of the connector and will not actually come out. Once the bolt is loose wiggle the connector so it is also loose, you might not actually be able to pull the connector off the electrical block because the connector has some "pre-stage" features that are sometimes hard to overcome.

Turn park lamps ON - check if fuse still blew.

If fuse did not blow then turn off park lamps and reinstall connector and tighten down the nut. Turn on park lamps again and see if fuse blows.

What this test will tell you is if the short circuit is in front of vehicle (or in the instrument panel) or if the short is in the rear of the vehicle.

XMBlackGT1
11-30-2004, 08:39 AM
You could keep blowing the fuse because something in the fuse block is wet. I'd check the sunroof, there is a good possiblilty that its leaking in.

White Puma
11-30-2004, 02:32 PM
Have you added any LED's in your car recently?

ace_332
05-06-2008, 03:21 AM
This same problem just happened to me I will be checking the fuses today

TFA
05-06-2008, 04:36 AM
holy 4 year old thread batman