Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

NHTSA — Engine And Engine Cooling: Engine Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
81,000 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.

2003 Pontiac Bonneville engine problems

engine problem

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2003 Pontiac Bonneville Owner Comments

problem #2

Dec 102007

Bonneville 6-cyl

  • Automatic transmission
  • 90,000 miles


The contact owns a 2003 Pontiac Bonneville. While driving 65 mph, the engine stalled and all the warning indicator lights illuminated. The vehicle would not restart. The repair shop stated that the failure was caused by a spun bearing and a blown rod. The engine was replaced. The current and failure mileages were 90,000. Updated 03-04-08 the vehicle had a coolant leak from the intake. After the repair was made, the engine blew out a rod.

- South Field , MI, USA

problem #1

Oct 182003

Bonneville 6-cyl

  • Automatic transmission
  • 72,000 miles
Plenum intake valve & gasket replaced in April 2003 and again in September 2003. Now engine needs to be replaced. Service dept. Told me they stock these parts due to frequent demand for them. This is my 2nd Pontiac and I am disappointed with the Bonneville. My 2 previous repairs were over $900 and now I may have to replace an engine. I would appreciate any assistance you could provide to rectify this issue. The vehicle is awaiting repair at dean arbour Chevrolet in East tawas, mi.

- Oscoda, MI, USA

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