2003 Pontiac Bonneville Pontiac Bonneville 2003
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2003 Pontiac Bonneville repairs by problem area

Engine (50%)

Transmission and Drivetrain (0%)

Brakes and Traction Control (13%)

Suspension and Steering (38%)

Electrical and Air Conditioning (0%)

Paint, Rust, Leaks, Rattles, and Trim (0%)

Other (0%)

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Chart based on 8 repairs.
See TSBs and recalls for the 2003 Pontiac Bonneville.

2003 Pontiac Bonneville 4dr Sedan

supercharged 240hp 3.8L V6 4-speed automatic FWD

62500 mi

US $55		 Replaced valve cover gaskets. 

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2003 Pontiac Bonneville 4dr Sedan

205-horsepower 3.8L V6 4-speed automatic FWD

96000 mi

US $700		 Replaced Intake Manifold gaskets. Were leaking coolant. 
106000 mi

US $975		 Serpentine belt tensioner bearings went bad, causing belt to get torn up, causing engine to overheat. Replaced bearings and serpentine belt. Replaced leaking coolant elbows, broken stabilizer link, brake lines to rear breaks (were rusting through) and leaking fuel fitting. 

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2003 Pontiac Bonneville Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2003 Pontiac Bonneville problems occur, check out our car reliability stats.