Most common 2006 Chevrolet Trailblazer EXT 370 problems
Share of the 16 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Chevrolet Trailblazer EXT 370 complaints by model year
Best Trailblazer EXT 370 years: 2002, 2003. Years to avoid: 2005. Compare all years →
NHTSA defect investigations
Federal safety investigators have looked into 4 possible defects involving the 2006 Chevrolet Trailblazer EXT 370:
Driver's Master Power Window Switch
The Office of Defects Investigation (ODI) opened this investigation on February 9, 2012 in response to complaints alleging driver door module melting and/or burning in MY 2006-2007 Chevrolet Trailblazers. In response to ODI's Information Request letter, General Motors presented 167 reports and 698 warranty claims that related to the alleged problem.
Fuel level gauge system failure
The office of defects investigations (ODI) analyzed complaint data provided by General Motors (GM) as well as complaints submitted to ODI from consumers.In total, there were 5,089 unique reports indicating an inaccurate fuel level reading while driving.General Motors stated that this condition occurs when the contacts of the fuel sensor wear prematurely.Most of the complaints indicated an empty fuel gauge reading…
Driver's Master Power Window Switch
On August 15, 2012 General Motors (GM) announced a regional recall action (12V-406) involving model year (MY) 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender and MY2005-2007 SAAB 9-7x vehicles originally sold or currently registered in the salt belt states of Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New…
Fuel Level Gauge System Failure
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than…
What 2006 Chevrolet Trailblazer EXT 370 owners say
Electrical system
Tl* the contact owns a 2006 Chevrolet Trailblazer EXT 370. While operating the vehicle, the fuel gauge would erroneously indicate that the fuel tank was empty. After restarting the vehicle, the fuel gauge would provide an accurate fuel reading before displaying empty again. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 71,800.
Tl* the contact owns a 2006 Chevrolet Trailblazer EXT 370. While the vehicle was stopped at a red light, the headlights failed to illuminate. The failure recurred twice. The vehicle was taken to an independent mechanic where it was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 126,000.
Lights
Tl* the contact owns a 2006 Chevrolet Trailblazer EXT 370. The contact stated that while driving approximately 35 MPH, the headlights became inoperable without warning. The vehicle was taken to the dealer where the contact was informed that the hdm module needed to be replaced. The vehicle was repaired however, the failure recurred. The contact mentioned that the failure recurred several times. The contact received notification of NHTSA campaign number: 15V519000 (exterior lighting) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure. The failure mileage was 125,000. VIN tool confirms parts not available.
The headlights while driving will cut off. I have tried replacing headlights with no success. I saw an article about a recall on my car pertaining to headlights. When the article states you guys where told in an email, I don't see that recall on your page. Please contact me with information to fix this problem. Also, my stability control is not working. The light keeps coming on.
Fuel & propulsion system
Tl* the contact owns a 2006 Chevrolet Trailblazer EXT 370. While driving at various speeds and while idling, the fuel gauge fluctuated from empty to full continuously and the check engine warning indicator illuminated. The failure recurred numerous times. The vehicle was taken to a dealer. The technician diagnosed that the fuel level sensor failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 113,762. Updated 4/16/15 updated 9/29/2017
Checking fuel indicator started to be stuck on below empty causing me to run out of gas on a few occasions. And from my understanding this has been a flaw in GM trucks for sometime now. And the cost for the repair is over $500.00. These vehicles cost too much money to have these types of problems and the dealer not think it is there responsibility to correct.
Frequently asked questions
Is the 2006 Chevrolet Trailblazer EXT 370 a good car?
Based on 16 owner complaints filed with NHTSA, the 2006 Trailblazer EXT 370 rates average: 1.5× as many complaints as a typical year of the Trailblazer EXT 370 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Chevrolet Trailblazer EXT 370?
The electrical system — 5 complaints, 31% of all complaints for this model year. Next are the lights (4) and fuel & propulsion system (3).
How many recalls does the 2006 Chevrolet Trailblazer EXT 370 have?
NHTSA lists no recalls for the 2006 Chevrolet Trailblazer EXT 370. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Chevrolet Trailblazer EXT 370?
The best years by complaints, compared at the same age, are 2002 and 2003. Years to avoid or approach with caution: 2005. See the full Chevrolet Trailblazer EXT 370 years comparison.
At what mileage do 2006 Chevrolet Trailblazer EXT 370 problems happen?
The median mileage reported in complaints is about 110,000 miles; 21% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.