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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
44,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Chevrolet Impala cooling system problems

cooling system problem

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2004 Chevrolet Impala Owner Comments

problem #2

Dec 272009


  • 58,000 miles


Now at 117,000 kms. Or past my five year warranty. Since 88,000kms. Have complained several times about temp gauge very out of whack on highway trips, lead me to believe severely overheated, but no message from car, just gauge going almost 90 degrees past "danger point " of gauge. In last two years temp gauge replaced three times. Obviously not the problem. Returns to normal function in city or short haul driving. Stop frequently, and under hood check shows no signs of overheating. Conclusion- electrical, sensor, problem and dealer keeps coming up with costly new equipment fixes which do not work. Now they want to blame a water pump leak and gaskets, although reservoir carefully watched by me. No leaks there. Have never had to add fluid, although I keep it always in car-that is the dexcool-water mix. Never down lower than recommended, and the dealer wants to give me a new water pump and take 1000-1200 out of my pocket. They have never mentioned the temp sensor, or any other fix. Travel on mountain highways 3 times per year, gauge now gone way over the top 6-8 times. Always stop. No sign ever of hose, radiator, water, lowered reservoir, or computer messages as per manual. Have read of numerous similar problems of this make and model, the 04 Chevy Impala ls, always gauges. In my case I will not approve another temp gauge "fix" and now speedometer is acting up as well, just like other drivers reported.

- Vancouver, Canada, 00, USA

problem #1

Dec 012007

Impala 6-cyl

  • Automatic transmission
  • 30,000 miles
We have a 2004 Chevrolet Impala, which is a piece of crap. We purchased this car used, it had 26,000 miles on it. I filed a complaint w/ Chevy on phone number 866-790-5700. Our case # is 71-578092134. They were no help, since our warranty had expired. Our traction system & check engine light kept coming on. The traction system shut off & would not turn back on. It also knocked off the ABS system. Not safe. We took it to a local mechanic, the repairs were a new thermostat & thermostat sensor, & drivers side rear hub bearing. The cost was $500, the dealership wanted @1100.00!!!!!!! for the same repairs. The repair shop stated to me that they have approximately 5-10 Impala a week in their shop for the same repair!!! it appears GM screwed up. We are not the only ones who have this problem. We also own a 1995 GMC 1500 Sierra, have not had to fix anything as major as the Impala. GM's warranty is the worst in the business. GM was no help at all.

- Indianapolis, IN, USA

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