What are the most common Pontiac Sunfire problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003-2003 Pontiac Sunfire has 1 documented issues. The most frequently reported are: Sunfire 2.2L Ecotec (L61) Head Gasket / Head Crack. None are rated critical, but regular maintenance is recommended.

Is the Pontiac Sunfire reliable?

The 2003-2003 Pontiac Sunfire has 1 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Pontiac Sunfire problems?

Repair costs for known Pontiac Sunfire issues range from $1,000 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2002-2005 Pontiac Sunfire Sunfire 2.2L Ecotec (L61) Head Gasket / Head Crack?

The first-generation 2.2L Ecotec L61 in 2002-2005 Sunfire (and Cobalt, Cavalier, Saturn Ion) is prone to head gasket failure and cylinder head cracking — particularly if overheated once. Aluminum head warps easily. Often presents as bubbles in coolant reservoir, white smoke, and… Repairs typically run $1,000-$2,500. Severity: critical.

2003 Pontiac Sunfire Problems: 1 Issues Every Owner Should Know

2003 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated May 2026

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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003 Pontiac Sunfire has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. Across all issues, repair costs range from $1,000 to $2,500. DIY maintenance guides at au7o.io.

All 1 Known Issues

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