Worst 2003 Grand Am engine Problems
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- car won't start
- intake leak
- rocker arms loosening
- car stalled when driving
- car intermittently stalls and hesitates
- engine flare around 5 mph
- engine locked up
- engine RPMs went to redline
Compare Pontiac Grand Am Model Years
Curious how the 2003 Grand Am compares to other years? Check out our new Pontiac Grand Am overview page to see the most problematic years, worst problems and most recently reported complaints with the Grand Am.