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2003 Chevrolet Impala Problems

Find the most common issues based on 2003 Chevrolet Impala owner complaints.
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Most Common 2003 Chevrolet Impala Problems

Erratic and hard shifting can occur from a failed transmission pressure control solenoid. To fix this issue, a partial dis-assembly of the transmission is necessary to replace a failed pressure con...
The automatic transmission shifter may fail, or a wire may break near the shifter causing the ignition key to become stuck in the ignition lock cylinder.
The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault.
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0 Known 2003 Chevrolet Impala Brakes Problems

2 Known 2003 Chevrolet Impala Drive Train Problems

Erratic and hard shifting can occur from a failed transmission pressure control solenoid. To fix this issue, a partial dis-assembly of the transmission is necessary to replace a failed pressure con...
You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be com...

3 Known 2003 Chevrolet Impala Electrical & Lights Problems

The automatic transmission shifter may fail, or a wire may break near the shifter causing the ignition key to become stuck in the ignition lock cylinder.
The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault.

9 Known 2003 Chevrolet Impala Engine Problems

The intake manifold gasket can develop external engine oil or coolant leaks. In some cases the failed gasket will leak coolant internally. The manifold gasket will need to be replaced to correct th...
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.

4 Known 2003 Chevrolet Impala Exhaust & Emissions Problems

A Loose or worn gas cap may cause Check Engine Light to illuminate.
The catalytic converter may become plugged resulting in loss of engine power. General Motors has extended the catalytic convertor warranty on some models to 10 years or 120,000 miles. Please cont...
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P...

1 Known 2003 Chevrolet Impala Heating & Air Conditioning Problem

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

1 Known 2003 Chevrolet Impala Maintenance Problem

Contaminated brake fluid can cause problems in the brake system and it should be flushed every 60,000 miles.

2 Known 2003 Chevrolet Impala Miscellaneous Problems

2 Known 2003 Chevrolet Impala Suspension & Steering Problems

The high pressure power steering hose will commonly leak fluid; it should be replaced.
The steering may develop a clunk type noise from the upper intermediate steering shaft. Our technicians tell us that you should check with your local GM dealer to find out what the latest repair i...

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Known 2003 Chevrolet Impala Problems & Complaints

The crankshaft position sensor, ignition module, and/or powertrain control module (PCM) may fail resulting in illumination of the Check Engine Light with ignition system related fault codes stored ...
The steering may develop a clunk type noise from the upper intermediate steering shaft. Our technicians tell us that you should check with your local GM dealer to find out what the latest repair i...
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
Contaminated brake fluid can cause problems in the brake system and it should be flushed every 60,000 miles.
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P...
You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be com...
Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.
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.
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