2004 Chevrolet Blazer Engine cooling Problems
- Complaints
- 4about this part
- Share
- 8%of 50 total for the year
- Median mileage
- 38,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine cooling of the 2004 Chevrolet Blazer, 8% of the 50 complaints for this model year. Where a mileage was given, the median is 38,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was stuck in traffic on an interstate. Without warning my vehicle shut off. I restarted it a few moment later and continued down the road. Approx 30 min later while traveling 70 MPH, it suddenly stopped again. During the next 2 hours, it quit 5 more times, usually at stop signals. I took the vehicle to the dealer who had it for two days and couldn't find anything wrong.”
NHTSA complaint #10080687, filed 2004-07, 38,000 miles“2004 chevy Blazer 4.3 v6 vehicle 49,000 miles the intake manifold gasket leaking .numerous complaints online they used cheap plastic gasket in combination with dexcool fluid some say result in meltdown of fuel line gasket resulting in fire.”
NHTSA complaint #10263008, filed 2009-03, 49,000 miles“Vibration and droning noise started 1 1/2 weeks (approximately december 9 or 10, 2003, after purchase on 11/24/2003. Levels of vibrations range from light to medium to heavy; levels of droning noise range from light to medium to heavy. 1. 1st repair visit--1/17/04 for vibration and droning--(droning was not mentioned on service order;when leaving the dealer, the vibration and droning noise worse than when it was brought in. Service order had 1465 excessive exhaust vibration l2004 .4 to align exhaust system .5 to install clamp kit install exhaust weights 602 line total .9 hr 2. …”
NHTSA complaint #10072422, filed 2004-05, 150 miles“My 2004 trailblazer had been in the maroone service dept 5 times during the first 27000 due to loss of power, engine stop on traffic light, and service engine soon light on. The last time was last week and the light is on again. I almost had accident on the turnpike trying to pass a car, car is not responding as necessary. I previously owner a Blazer, and a trailblazer and they were great. This truck is giving me a hard time, lost of time and confidence.”
NHTSA complaint #10156083, filed 2006-04Related 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 |
|---|---|---|
| 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 2004 Chevrolet Blazer
10 complaintsBrakes
7 complaintsBody and structure
6 complaintsSuspension
6 complaintsSteering
4 complaintsTransmission and drivetrain
4 complaintsAir bags
3 complaintsTires
3 complaintsExterior lighting
2 complaintsLatches, locks and linkages
2 complaintsSeat belts
2 complaintsVehicle speed control
2 complaints
← All problems reported for the 2004 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