2004 Chevrolet Impala Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Chevrolet Impala

2004 Chevrolet Impala Problems

DexCool antifreeze forms sludge

DexCool antifreeze formed brown gel-like sludge, first observed at radiator cap. Supposed to last 100,000 miles. Lawsuit settled for cases where engine failed. Flushed system and replaced coolant. Keep air out of system by ensuring coolant reservoir always at proper level and check radiator periodically by removing cap.

Water Pump May Fail Prematurely

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

Transmission Pressure Control Solenoid Failure May Cause Erratic Shifting

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.

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2004 Chevrolet Impala Questions

Tranny flush or change? (1 answer)

Bought a 04 impala from a local dealer. Had for 2 weeks and its starting to shift a tad hard. Got oil changed and said tranny needs serviced. They suggest a flush but i did my research and it suggested that it was not good to flush the tranny. Should i get just a fluid change, filter and drop pan...

My car was recently towed now my check engine light is on. How do I turn it off. (1 answer)

The battery was completely dead super dead and now my car make a slight grind, a brief seconds and then cranks. Check engine light will not go off.

I just bought a viper 5101 remote start do I also need to buy a bypass module (1 answer)

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2004 Chevrolet Impala Recalls

Engine Oil Leaks Onto Exhaust Manifold

Engine oil can leak onto the exhaust manifold, causing a fire hazard. This concern was addressed in previous recall notifications, but improvements to the repair have been made. Dealers will make improved repairs free of charge to resolve the concern.

Engine Oil Leaks

Engine oil may leak from the valve cover area, which can cause a burning odor and increase risk of fire. Dealers will replace the spark plug wire retainer to redirect the dripping oil on affected vehicles, and will replace the left valve cover gasket on vehicles with the 3.8L V6 supercharged engine.

Ignition Lock Cylinder Concern

Excess weight on the key ring can cause the ignition switch to move out of the run position without warning, turning off the engine. This defect can also affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. Dealers will provide two replacement key rings and key cover on all ignition keys to correct this concern.

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2004 Chevrolet Impala Reviews

the side of driver no fuction the heat and rarely i came my house and let the car and its no start after, at 6 hour of city.
I love my impala but, I had to replace turn signal arm twice.If the arm damage your lights will not work. There is a problem with Dex coolant. It mess up intake manifold gaskets. Had to replace the computer four years after buying the car. There was no recall from GM due to the coolant. Why I don't know.
I have 183,000 miles on the car. The instrument cluster has been causing problems for quite a while now, and I will have to get it fixed. Overall, those this has been a great car. The gas mileage is still great - 27pmg all around driving. No other problems. I am hoping for at least 250,000 miles.

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