NHTSA — Electrical System: Alternator/Generator/Regulator Problems

4.6

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
23,667 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1995 Pontiac Bonneville electrical problems

electrical problem

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1995 Pontiac Bonneville Owner Comments

problem #3

Jun 012004

Bonneville 6-cyl

  • Automatic transmission
  • 71,000 miles

A D V E R T I S E M E N T S

I purchased this car used from a dealer in 2001 in Michigan. (I don't think the air conditioning ever worked ). within a few months the traction control went out. It would be on, when the car started, but within driving 300ft. Would go out and could not be turned back on from the button. A few months after that all of the dash lights went out when ever you turned on the head lights. This was due to a bad switch & a short. Then the cruse control went out. A few months after that we had to replace the head gaskets due to the engine over heating by an unknown cause. 1 month after that we had to replace the engine after throwing a rod and cracking the engine block, due to the fact that there was still fluind in the engine from melted manafold.( this all took place between Nov. 2001 & Jan. 2002) after that the ignition had to be replaced because one of the wires was severed due to the wheel tilt. (we would tilt the wheel & could not start the car). In Nov. 2002 the transmission started to slip, we had it replaced. Then all at one time (2003) the battery went dead, the timing chain had jumped a tooth, the cam sensor, and the spark plugs which had been changed a few weeks before. A few weeks after that the engine overheated again due to a leak in the coolant resovoir bottel, this caused the head gaskets to blow again. It is now 2004 we have an ongoing electrical problem. Since mid 2003 we have gone through 3 PCM & 3 proms due to the fact the they kept frying ( a result of a bad ground that still can not be found), an altanator due to the fact that it had spikes. The check enging light would constantly come on & when the codes were pulled the egr vlave was listed, we replaced it and still the check engine light came on due to a still bad PCM. Now whenever we turn on the blinker the voltage gage moves in time with it due to a short. The RPM's surge at times while car is in motion or at idle, causing the car to satll or backfire. The cause is still unknown.

- 29 Palms, CA, USA

problem #2

Jul 011999

Bonneville

  • miles
I purchased tis car in June 1999. I ask the dealer before I drove it out of the yard if this car had been serviced, they stated it had. I drove the car on tues. The 15, and it stopped. And had to be towed, I was told it was the battery. I was out on sat. The 4th of July and it shut off in the middle of B'way. It had to be towed, I was told it was the altenator, I was leaving the mall in paramus N.J. in Aug.1999 and it shut off I called for a tow and got boosted to get home. It shut off on me again in later Sept. Each time I was told it was a wiring problem. On November the 22, they picked it up again andi was again told it was a wiring problem. On Jan, the 25 I was enroute to work and it shut off and had to be towed, at this time I would not pick it up because I told them I was going to court, because I had been sold a beautiful lemon. The swore I wold not hav E another problem ands I brought it home. Only to find the front defogger was not working and I has told them about it before. On March the 21, I tried to start the car and nothing. They said the battery had corrosion on it. They also said the oil pan needed to be replaced. I found after I purchased the car had been in an accident in the front. I was not told this. Now the saleman that sold it to me is trying to offer me some kind of deal. I truly need some legal advise as soon as possible. Thank you.

- New, NY, USA

problem #1

Sep 151998

Bonneville

  • miles
The alternator whines loudly at any speed. It functions, but service manager at owings mills Pontiac advised me to keep an eye on it.

- Baltimore, MD, USA

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