2002 Chevrolet Trailblazer Engine cooling Problems
- Complaints
- 143about this part
- Share
- 12%of 1,149 total for the year
- Median mileage
- 55,350miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 143 complaints about the engine cooling of the 2002 Chevrolet Trailblazer, 12% of the 1,149 complaints for this model year. Where a mileage was given, the median is 55,350 miles. 6 of these say a crash was involved and 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My 2002 Trailblazer sounds like a jet engine when preparing to start out in the drive position at all times no matter when speed you start out in. The auto mechanic I took it to several times said it would cost hundreds to replace the clutch fan to see if this would fix the problem possibly more and it is using way too much gas now.”
NHTSA complaint #10168337, filed 2006-09, 46,000 miles“Our motor came to part. We've only had a few visits to the dealership which was not recorded. When we notified the dealership he gave us papers of a special warranty put on our vehicle. One that last until 100,000. Problem being we've never received one page of this. We have a 2002 chevy Trailblazer.”
NHTSA complaint #10173162, filed 2006-11, 113,000 miles“The clutch fan on our Chevrolet 2002 Trailblazer went out and the fan stayed on. It resulted in reduced engine power because the fan was pulling so much power from the motor. When our mechanic called for parts, the Chevrolet dealership had 15 on stock. Apparently chevy is aware of this problem but has not recalled it.”
NHTSA complaint #10096040, filed 2004-10, 53,362 miles“Since shortly after purchase, (feb. '02) to present (july '03) my 2002 Chevrolet Trailblazer ltz 2wd has frequent-to-constant pinging in engine while accelerating; flat surfaces and inclines. Higher octane gasoline does not remedy. Representative at dealer's service dept. States this is normal with trai*blazers. I am concerned that it is causing damage to the heads.”
NHTSA complaint #10025454, filed 2003-07, 100 miles“I was driving home from work and started hearing the trucks undercarriage start to rattle and grind on the bumps of the road. I had a sudden loss of power on engine and it wouldnt respond to my pressing on the gas. I believed that I had gas in the truck because the gauge read half full and apparently I was out of gas. So I proceeded to pull into a gas station and as soon as we filled up, the truck would not start! I saw that my check engine light was on and had to ask for a jumpstart to get it started again. …”
NHTSA complaint #10430409, filed 2011-10, 40 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 |
|---|---|---|
| 2023 | 4 | 5% |
| 2022 | 2 | 2% |
| 2021 | 2 | 1% |
| 2008 | 12 | 6% |
| 2007 | 12 | 2% |
| 2006 | 24 | 2% |
| 2005 | 44 | 3% |
| 2004 | 39 | 4% |
| 2003 | 65 | 7% |
| 2002 | 143 | 12% |
| 2001 | 5 | 25% |
| 2000 | 2 | 8% |
Other parts of the 2002 Chevrolet Trailblazer
310 complaintsElectrical system
181 complaintsExterior lighting
143 complaintsFuel system
132 complaintsVisibility (wipers, defrost, mirrors)
106 complaintsAir bags
102 complaintsBrakes
55 complaintsSeat belts
48 complaintsSteering
42 complaintsBody and structure
40 complaintsOther or unknown
36 complaintsEquipment
34 complaints
← All problems reported for the 2002 Chevrolet Trailblazer
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