2006 Chevrolet Trailblazer Engine cooling Problems
- Complaints
- 24about this part
- Share
- 2%of 1,108 total for the year
- Median mileage
- 56,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 24 complaints about the engine cooling of the 2006 Chevrolet Trailblazer, 2% of the 1,108 complaints for this model year. Where a mileage was given, the median is 56,000 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.
“My 2006 trail blazer has approx. 60,000 miles. I have had to replace an injector. The heater fan motor is now not working and the fuel level sensor does not work, the lighter does not work and keeps blowing fuses if you try to use it. I have replaced both brake lights as well.”
NHTSA complaint #10264919, filed 2009-04, 49,000 miles“I recently had my 06 chevy Trailblazer towed to the GM garage due to it having an engine failure while my wife was driving it. Diagnoses is a broken valve spring in cylinder #1. Repairs costs $752. Gm is not willing to help me with the repairs due to it is out of warranty. Car only has 56,000 miles on it and to have a valve spring snap in half while under normal driving conditions is ridiculous and a huge safety concern. Looking for something to be done about this since no one from GM seems to care.”
NHTSA complaint #10268288, filed 2009-05, 56,000 miles“I have had many many problems with my 2006 Chevrolet Trailblazer most recently the transmission is bad, I had started complaining to the dealer about the transmission slipping at around 8,000 miles, the truck now has 17,000 miles on it. The dealer refuses to repair it under my warranty. The dealer will not cover the repair. The dealer told me I had to pay out of pocket. I was informed of this on 5/4/2007. I have had many many repairs done on this vehicle, something is not right. …”
NHTSA complaint #10189860, filed 2007-05, 8,000 miles“When I did a routine fill up on my vehicle and upon restarting the car after completion, the fuel gauge showed empty and the low fuel light came on. I turned the vehicle off and then turned it back on and it still showed low fuel. As I was driving the vehicle home, I noticed the check engine light came on. After driving the vehicle for about 20 miles or so, the fuel gauge showed correctly and the check engine light went off. However, upon the next fill up, it did the same thing. Now, it is at the point that it doesn't register the gas in the vehicle at all. …”
NHTSA complaint #10409608, filed 2011-06, 100,891 miles“My son and husband purchased a used 2006 chevy Trailblazer ss on nov 4, 2008. They purchased an extended warranty with zurich. On feb 14, 2009 the engine blew up. No warning lights came on notifying the driver of any problems with the motor. Zurich asked for the mechanic to rebuild the motor, now the motor still is not running properly and they refuse to pay the mechanic or order a new motor. They want him to take it apart again. I am wondering if more owners have had problems with this motor-ls2 427. Could you please investigate this as a third party? …”
NHTSA complaint #10274057, filed 2009-06, 61,000 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…
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 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…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 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…
- 10239101Jun 30, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
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 2006 Chevrolet Trailblazer
607 complaintsElectrical system
251 complaintsExterior lighting
112 complaintsVisibility (wipers, defrost, mirrors)
102 complaintsTransmission and drivetrain
50 complaintsEngine
43 complaintsAir bags
31 complaintsBrakes
28 complaintsSteering
26 complaintsBody and structure
26 complaintsElectronic stability control
23 complaintsOther or unknown
23 complaints
← All problems reported for the 2006 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