2003 Pontiac Bonneville
Engine Problems
2003 Pontiac Bonneville Engine Problems
Click on a problem below to read more.
- Blown Head Gasket
- Excessive Oil Consumption
- Leaking Intake Gasket
- NHTSA: Engine
- NHTSA: Engine And Engine Cooling
- NHTSA: Engine And Engine Cooling: Engine
- NHTSA: Vehicle Speed Control
Loading ...
one sec.
Stay Up to Date
Compare Pontiac Bonneville Model Years
Curious how the 2003 Bonneville compares to other years?
Check out our Pontiac Bonneville overview to see the most problematic years, worst problems and most recently reported complaints with the Bonneville.
