NHTSA — Engine And Engine Cooling: Engine Problems

CarComplaints.com Seal Of This Might Hurt


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
46,062 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.

2002 Pontiac Bonneville engine problems

engine problem

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2002 Pontiac Bonneville Owner Comments

problem #2

Nov 192006

Bonneville 6-cyl

  • Automatic transmission
  • 92,123 miles


The tip of a spark plug broke off into the piston causing me to have to replace the engine. GM has refused to reimburse me for my replacement engine.

- Riverdale , GA, USA

problem #1

Nov 102003

Bonneville 6-cyl

  • Automatic transmission
  • miles
I received a recall repair for my 2002 Pontiac Bonneville-campaign #03034. If I had replaced the upper intake manifold gasket, throttle body nuts, or throttle body gasket before August 8, 2003, I would have been eligible for reimbursement. Since I only had owned the car for 1 year at that time and had not replaced these items, I had a recall repair done on 11-10-03. I mentioned at the time that when I come into my garage, I could smell hot coolant. The shop followed the instructions of the recall repair to replace the throttle body nuts and added something similar to a "stop leak". we tried at that time to get a better "fix" to properly repair possible problem, but this is all shop would do. Now, after my warranty is over, I was told that I need to replace my upper intake gasket kit since the intake manifold gasket is leaking coolant externally.

- Stewartville, MN, USA

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