10.0

really awful
Typical Repair Cost:
$90
Average Mileage:
182,000 miles
Total Complaints:
2 complaints

Most common solutions:

  1. if engine hasn't failed yet, replace upper intake manifold gasket (1 reports)
  2. not sure (1 reports)
Get notified about new defects, investigations, recalls & lawsuits for the 1995 Pontiac Bonneville:

Unsubscribe any time. We don't sell/share your email.

problem #2

Jan 002010

Bonneville SE 3.8L

  • Automatic transmission
  • 245,000 miles

Plastic intake manifold warped and let antifreeze leak into my engine. Usually this would be the end of the engine, but if it survives replace intake manifold. Common downfall of the 3800 series engine. Other than that, very reliable.

- snowglider05, Fenton, MI, US

Send Comment Add Complaint
problem #1

Dec 172009

Bonneville 3.8L

  • Automatic transmission
  • 119,000 miles

I have the car in the shop and don't know the exact problem yet but all indication are it's the manifold went bad and water in the engine now. The car over heated and started smoking white smoke out the tail pipes was missing really bad. I shut it off then it would not start. I mentioned the problem to a friend and he said that he had the same problem with his 95 Bonneville and had heard that the manifolds in buicks and pontiacs in the years around 95 and 97 were made of aluminum and are eaten away by the antifreeze over the years. This sure is going to be an expensive repair about 1600.00 I hear.

- Lenia N., Johnstown, OH, US

Send Comment Add Complaint