Problems for specific Pontiac Grand Prix GTP years:

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Most reported 2003 Pontiac Grand Prix GTP problems

 

Verified for the Pontiac Grand Prix GTP

The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.

32 Reports
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Verified for the Pontiac Grand Prix GTP

The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.

23 Reports
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Verified for the Pontiac Grand Prix GTP

The intake manifold gasket may develop external engine oil leak. The manifold gasket will need to be replaced to correct this issue. RepairPal cannot confirm a recall for this concern on these models.

20 Reports
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Verified for the Pontiac Grand Prix GTP

The serpentine belt tensioner pulley may wear out. Our technicians tell us that in order to get a new pulley from General Motors you must purchase a complete belt tensioner assembly.

14 Reports
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Verified for the Pontiac Grand Prix GTP

The fuel pump may fail causing engine to stall and not restart.

14 Reports
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Verified for the Pontiac Grand Prix GTP

The high pressure power steering hose will commonly leak fluid; it should be replaced.

9 Reports
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Verified for the Pontiac Grand Prix GTP

The water pump may develop a coolant leak resulting in an engine overheating condition.

9 Reports
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Verified for the Pontiac Grand Prix GTP

The battery may leak acid at the battery cable connections. As a result corrosion may form on the battery cable ends. Leaking batteries should be replaced and the cables need to be thoroughly cleaned or replaced if necessary.

8 Reports
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Verified for the Pontiac Grand Prix GTP

Corrosion may develop at the connection between the ignition coil tower and spark plug wire resulting in an engine misfire. The Ignition coil and spark plug wire should both be replaced to correct this condition.

8 Reports
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Verified for the Pontiac Grand Prix GTP

An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.

7 Reports
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Verified for the Pontiac Grand Prix GTP

The high pressure power steering hose will commonly leak fluid; it should be replaced.

5 Reports
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