2002 Chevrolet Blazer Engine cooling Problems
- Complaints
- 20about this part
- Share
- 8%of 246 total for the year
- Median mileage
- 42,919miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 20 complaints about the engine cooling of the 2002 Chevrolet Blazer, 8% of the 246 complaints for this model year. Where a mileage was given, the median is 42,919 miles. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I m buying a 2002 Chevrolet Blazer now the emission exhaust system has begun to let out dust heat out of the air vent. And making my head hurt and body hurt. The warranty said that it is the emissions control system warranty.”
NHTSA complaint #10053289, filed 2004-01, 41,021 miles“After engine has warmed up, there is a constant enging/tapping/rattle noise similar to the sound that bad lifters make. This sound is prevalent under all conditions and more pronounced on acceleration. I brought it to the dealership several times and they indicated it was a normal sound per detroit. Detroit has a document id#843248 that addresses this problem. I complained to GM and they have extended the warranty on the engine to 100,000 miles or 11/27/07 whichever comes first. I am still not satisfied as the noise is consistent and an irritant. …”
NHTSA complaint #10033364, filed 2003-08, 13,016 miles“While driving, dirt and dust particles come through the ventilation system. The exhaust system and catalytic converters is backing up through the air and heat ventilation system. This problem was due to the vehicle being rear ended”
NHTSA complaint #10048324, filed 2004-01, 44,817 miles“I have had to replace the intake manifold gasket on 3 chevrolets in the past 3 three years today being the the third. If there is a problem with the gaskets or coolant <dexcool> the repair should be done at no cost to the consumer”
NHTSA complaint #10068076, filed 2004-04, 74,555 miles“The heater and defroster failed to generate heat. No events leading up to failure. This fall when we needed the heat and window defroster just luke warm air was coming out. The intake hose to the heater was hot the out take hose was cold. This failure causes a major safety issue because the front window will not un-fog and the ice and snow will not melt off the front window. The driver can not see out of the front window. There is no warning to this problem. Research this problem on the web and there are numerous other people and vehicles with the same problem. …”
NHTSA complaint #10142683, filed 2005-11, 99,925 milesRelated service bulletins
- 10251887Mar 14, 2024This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
- 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.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 4% |
| 2023 | 2 | 5% |
| 2022 | 1 | 2% |
| 2021 | 3 | 2% |
| 2020 | 3 | 1% |
| 2019 | 1 | 1% |
| 2008 | 1 | 20% |
| 2005 | 1 | 7% |
| 2004 | 4 | 8% |
| 2003 | 6 | 8% |
| 2002 | 20 | 8% |
| 2001 | 23 | 7% |
| 2000 | 63 | 11% |
| 1999 | 62 | 14% |
| 1998 | 64 | 9% |
| 1997 | 93 | 12% |
| 1996 | 149 | 13% |
| 1995 | 213 | 17% |
| 1994 | 42 | 7% |
| 1993 | 51 | 10% |
| 1992 | 9 | 3% |
| 1991 | 12 | 5% |
| 1990 | 5 | 16% |
| 1989 | 4 | 11% |
| 1988 | 7 | 18% |
| 1987 | 2 | 7% |
| 1986 | 5 | 26% |
| 1985 | 5 | 17% |
| 1984 | 1 | 11% |
Other parts of the 2002 Chevrolet Blazer
54 complaintsTransmission and drivetrain
33 complaintsBrakes
23 complaintsFuel system
22 complaintsElectrical system
21 complaintsAir bags
17 complaintsSuspension
16 complaintsVisibility (wipers, defrost, mirrors)
16 complaintsSteering
14 complaintsBody and structure
11 complaintsOther or unknown
7 complaintsSeat belts
7 complaints
← All problems reported for the 2002 Chevrolet Blazer
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