2004 Chevrolet Trailblazer Engine cooling Problems
- Complaints
- 39about this part
- Share
- 4%of 1,081 total for the year
- Median mileage
- 36,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 39 complaints about the engine cooling of the 2004 Chevrolet Trailblazer, 4% of the 1,081 complaints for this model year. Where a mileage was given, the median is 36,000 miles. 5 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have had my trail blazer for 1 yr and 1 month. In that time I have had to replace front and back pads and rotors, ball joints, catalytic (sp) converter, and now they just told me I have to replace the head gasket on the manifold. What the hell is going on with this vehicle. I no longer feel safe driving it. The other day the radio just stopped playing and then the service 4 wheel drive light came on.”
NHTSA complaint #10167431, filed 2006-09, 36,000 miles“We have had a problem with our service engine light coming on within the past 2 weeks in our 2004 Trailblazer. After getting it diagnosed it is being caused by the fan speed being too high. After doing some research this vehicle has had numerous repairs for the same issue. Why has GM not warranted this!? We have gotten crappy service from the dealership and while our vehicle is out of warranty now it is paid for our we would have gotten rid of it already.”
NHTSA complaint #10249591, filed 2008-11, 88,000 miles“On 5 separate occasions, the engine on my 2004 Trailblazer has stalled while in traffic. 1 time, the engine stalled when I applied the brakes; every other time, the engine stalls while at idle. I have taken it into the dealership repeatedly, and they have been unable to duplicate but not fix the problem. They have replaced the manifold pressure valve and cleaned the throttle plates, but the problem still persists.”
NHTSA complaint #10145545, filed 2005-12, 28,000 miles“Spark knock noise on passenger side of car ,not in the engine along side of car, been to dealer 5 times they told me its normal noise and to get over it !! Poor gas mialage dealer told me that its normal, the sticker says 15 mpg I am getting 10 to 11, again get over it... Can you help please !!!”
NHTSA complaint #10064286, filed 2004-03, 100 miles“Our 2004 Chevrolet Trailblazer with approx 40,000 miles caught fire while driving approximately 40 MPH. We noted smoke behind the car and before we could pull over other drivers were yelling to us that the car was on fire. We immediately got to side of road, turned off engine and a large fire was coming from the hood. A good samaritan ran up with a fire extinguisher and put out the fire that was approx 4 feet high from the hood. All passengers safely exited the car as soon as stopping and due to the fire being extinguished quickly no other damage was done. …”
NHTSA complaint #10236791, filed 2008-08, 40,000 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.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 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.
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 2004 Chevrolet Trailblazer
627 complaintsFuel system
148 complaintsExterior lighting
101 complaintsTransmission and drivetrain
62 complaintsAir bags
42 complaintsVehicle speed control
38 complaintsVisibility (wipers, defrost, mirrors)
31 complaintsBrakes
24 complaintsBody and structure
23 complaintsOther or unknown
21 complaintsEngine
16 complaintsSuspension
14 complaints
← All problems reported for the 2004 Chevrolet Trailblazer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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