NHTSA — Engine And Engine Cooling Problems


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
46,500 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 012015

Bonneville 6-cyl

  • 75,000 miles


The contact owns a 2003 Pontiac Bonneville. The contact stated that while moving the vehicle from its parked location, the contact noticed engine oil leaking on the ground under the vehicle. The contact also stated that the vehicle had been experiencing diminished engine power. The vehicle was not diagnosed or repaired. The VIN was not included in NHTSA campaign number: 15V701000 (engine and engine cooling). The manufacturer was not made aware of the failure. The failure mileage was 75,000. Updated 03/16/16

- Lisle, IL, USA

problem #1

Jun 122003


  • 18,000 miles
The contact owns a 2003 Pontiac Bonneville. The contact noticed an engine coolant leak at the upper intake manifold throttle body. He took the vehicle to the dealer and they stated that he would have to install a kit in the engine at his expense because the manufacturer stopped assuming financial responsibility in 2005. He was never notified of the alleged defect by the manufacturer. The vehicle has not been repaired. The failure mileage was 18,000 and current mileage was 105,000.

- Canton, OH, USA

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