Follow-up from three years later: Yes, that was the problem. Car still runs great. It's our spare car but we give it weekly driving. Very reliable.

Alternatively, you could just buy aftermarket clear ones on eBay. That's what I had on my `97.

A suggestion: If (when) you think you've got the problem licked, tack "[SOLVED]" to the end of your post's subject.

Honestly, there are so many 92-99 Bonnevilles and related cars in junk yards for dirt cheap parts that I would totally not stay restricted to a 95 just because I had one for parts. Also, I think I've seen more Bonnevilles in Ohio than literally any other state I've ever been in. No idea why. If it ...

What is it that you want to know that is giving you trouble? Are you seriously asking how to upgrade a 10 gauge wire? If you want to upgrade a 10 gauge wire, you get a bigger wire and put it where the 10 gauge wire is.

See if this helps:
http://www.pontiacbonnevilleclub.com/fo ... 40987.html

I recently completed extremely similar work on our 2001 Grand Prix GT with Bose, which I believe shares the same head unit and trunk amplifier as similar year Bonnevilles with Bose.

Here's what I did:
-I designed a built a power-line filter for the head unit from a big choke coil that I hand-wound ...

Engine bay photo please! Daaaaaang that interior floorpan was clean. Not a spot of rot on it! Amazing survivor!

Nice job!

When my `97 Bonneville SE daily driver got wrecked in late 2015, I replaced it with a 2005 Mercedes Benz S500 4Matic.

I'd say that my short list was either an S500 or S430 from either 2005 or 2006 specifically, just because they got a trim refresh before the W220 body style changed to the W221 in ...

Realistically, how much is a used trans and labor to R&R it going to cost? How far apart will that cost be from $2200 (USD) to rebuild? I think if I were faced with the same problem I'd do the rebuild if the rest of the car is in excellent condition. Otherwise I'd consider shopping for a very good ...

I found I could set the volume at 4 or max 5 bars for a very loud listening experience. I'm having trouble understanding what you mean with the various numbers you mention, and bars. I have a 2001 Bose-equipped Grand Prix GT, which I think is the identical system as the 2001 Bonneville with Bose ...

When my wife wrecked my `97 Bonneville in October 2015, I replaced it with a 2005 Mercedes Benz S500 4-matic. Last summer we also got a 2001 Grand Prix GT that we previously owned from 2003-2010 but sold to a neighbor when we got a minivan after we had kids. The neighbor gave me back the Grand Prix ...

First, make sure you're cleaning a cool motor to avoid possibly cracking it from spraying water or engine cleaner on a hot motor. Take care not to spray directly on electrical components like the coils tho everything is pretty much water tight. I also never spray with force. I do like a clean ...

Holy thread necrophilia, Batman!
Don't raise someone else's old thread from the grave to ask about your own car's new problem.
Please start a new thread with your car's problem.

Suggestion: Edit your original post and add [Solved] to the beginning of the subject.

Pull the oil filler cap off while it's running; see if the noise changes.
Inspect your PCV valve. My 3800 made horrible screeching noises when the PCV was *missing* from neglect by previous owner or previous owner's mechanic. Or, since the PCV runs about $3.27, just replace it and eliminate it as a ...

Well, it's possible to put in an aftermarket head unit and hook it to the Bose amp and speakers, but you'll need to buy a head unit that has front and rear line outputs, and then wire those correctly into the stock harness, which I can help you with, as I'm presently replacing components on a 2001 ...

Do you have the Bose system? If you replace your head unit, you'll need to work out how you're going to drive your speakers, because with factory Bose your speakers are driven by a crappy OEM Bose amplifier. Your wiring harness from your stock head unit does not go straight to the speakers. Are you ...

The spring on the door of my 97 Bonneville broke years ago, and I just let it go. The door closed but kind of stuck out maybe an extra 1/8 inch or so. Like everyone here said, a Pick-N-Pull style yard where you can either grab the spring and stuff it in your pocket, or get a complete door and spring ...

http://www.bestdealbuys.us/p/Scosche-Reverse-Wiring-Harness-for-2000-up-Gm-Ribbon-70186665.html
Apparently they have "Reverse wiring harnesses" now. You can get one and put your harness back the way it was if you can match up the correct wires, then use a normal aftermarket radio to GM harness to ...