2003 Chevrolet Impala Engine cooling Problems
- Complaints
- 80about this part
- Share
- 12%of 695 total for the year
- Median mileage
- 69,764miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 80 complaints about the engine cooling of the 2003 Chevrolet Impala, 12% of the 695 complaints for this model year. Where a mileage was given, the median is 69,764 miles. 7 a fire, according to the filers. 2 recall campaigns on record are filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“During an inspection of my 2003 Impala, mechanic advised of a coolant leak in upper intake manifold (a very common defect for this model / year) and it would cost hundreds of dollars to repair. Needless to say, I did not have the funds to repair it and all cars of this model / year should be recalled for repair.”
NHTSA complaint #10336598, filed 2010-06, 60,000 miles“I have a 2003 Chevrolet Impala which has 46,904 miles on it and it required the following at a cost of $1,150.00 to fix. I brought it to the dealer for a no heat problem, upon inspecting the vehicle it was found to need new lower intake manifold gaskets, new water pump, flushing and new dexcool antifreeze because of contamination.”
NHTSA complaint #10176868, filed 2006-12, 46,904 miles“My 2003 Impala cuts off at low speed high speed and while in idle the car has been to the dealership for repairs they cannot answer what is wrong with the car, but I keep getting billed for them to diagnose the issue, I got my car back on 4/11/2007 and on the next morning while the car was warming in the drive way it shut off and was hard to restart I was advised by the dealership my fuel filter was the issue”
NHTSA complaint #10187739, filed 2007-04, 129,991 miles“I was driving my 2003 chevy Impala and tried to signal a lane change and the flashers would not work for either direction. There was not any accident, but the situation was very aggravating. The car also has a history of oil seepage and it has only 70,000 miles on it. We bought the car 4 years ago at a used car dealer, and I change the oil myself every 3000 miles. The car is hard staring at times, and I had put a new battery in it 2 years ago due to the trouble starting.”
NHTSA complaint #10280952, filed 2009-08, 69,764 miles“I noticed a couple of times in stop and go traffic that my temperature indicator started to inch its way over to hot, never reaching the mark. I told my husband and he said I probably need a flush and new coolant. Took the car to dealership and I had a leaking intake gasket and needed to be repaired. Very expensive! Had oil in the radiator with hardly any liquid left. I started to read about other complaints and there were several so decided to report this so others will know they are not alone.”
NHTSA complaint #10330482, filed 2010-05, 72,000 milesRelated recalls
- 15V701000Oct 26, 2015General Motors LLC (GM) is recalling certain model year 1998-1999 Chevrolet Lumina and Oldsmobile Intrigue, 1997-2004 Buick Regal and Pontiac Grand Prix…Covers: Chevrolet Impala 2000–2004, Pontiac Grand Prix 1997–2004, Buick Regal 1997–2004 +3 more
- 09V116000Apr 8, 2009General motors is recalling 1,497,516 my 1997-2003 buick regal, my 1998-2003 chevrolet lumina, monte carlo and impala, my 1998-1999 oldsmobile intrigue, my…Covers: Chevrolet Impala 2000–2003, Pontiac Grand Prix 1997–2003, Buick Regal 1997–2003 +3 more
Related service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10242843Sep 1, 2023The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10236164Apr 24, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10235802Apr 24, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234141Mar 23, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234110Mar 17, 2023This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
- 10228888Dec 14, 2022This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2014 | 2 | 0% |
| 2013 | 2 | 1% |
| 2012 | 3 | 1% |
| 2011 | 9 | 2% |
| 2010 | 6 | 1% |
| 2009 | 21 | 3% |
| 2008 | 26 | 3% |
| 2007 | 30 | 5% |
| 2006 | 27 | 5% |
| 2005 | 31 | 5% |
| 2004 | 36 | 3% |
| 2003 | 80 | 12% |
| 2002 | 106 | 13% |
| 2001 | 123 | 17% |
| 2000 | 159 | 19% |
| 1996 | 10 | 11% |
| 1995 | 2 | 5% |
| 1994 | 2 | 13% |
Other parts of the 2003 Chevrolet Impala
264 complaintsExterior lighting
103 complaintsEngine
88 complaintsBrakes
76 complaintsOther or unknown
41 complaintsAir bags
39 complaintsSteering
30 complaintsTransmission and drivetrain
30 complaintsFuel system
26 complaintsVehicle speed control
23 complaintsVisibility (wipers, defrost, mirrors)
21 complaintsBody and structure
15 complaints
← All problems reported for the 2003 Chevrolet Impala
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology