Most common 2005 Chevrolet Trailblazer EXT 370 problems
Share of the 237 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 2 possible defects involving the 2005 Chevrolet Trailblazer EXT 370:
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…
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 2005 Chevrolet Trailblazer EXT 370 owners say
Electrical system all 101 →
My 2005 Chevy Trailblazer is completely going crazy it seems everything electrical is going wrong with it. I am afraid to let my wife or my kids drive in it because I never know what's going to go wrong while driving. My whole gas system is gone from fuel level indicator to the gauge. My entire dashboard is not working. Lights are going out. What is crazy about this is that I am one of thousands that this is happening to. Chevy needs to fix this problem before someone does get killed. Waiting for fatalities before making Chevy fixes there awfully made vehicles is unacceptable. I understand the situation our economy is in but these thousands of Trailblazer owners that are having these problems shouldn't be paying thousands of dollars to be getting there entire electrical problem fixed. I do not know one owner of a 2006 Trailblazer that does not have this same problem. …
There is already a recall out for the 2006 model year, but I know that mine is part of it. I have a 2005 Trailblazer and the headlights keep intermittently going out as I am driving down the road. This problem as happened to me before in the past and I was able to finally remedy the issue by replacing the relay. The problem has now returned and I have even been pulled over multiple times for it. After doing a quick google search today I discovered that there are tons!!!!! Of people with the same issue going back as far as 2002. Http://www.topix.com/forum/autos/Chevrolet-Trailblazer/t32jtl93i9fkauf4n http://forums.trailvoy.com/showthread.php?t=47492 http://chevroletforum.com/forum/Trailblazer-27/2003-Trailblazer-headlights-2588/ I also ran across that GM has issued a recall for headlights, but it only covers years 2006-2008. …
Fuel & propulsion system all 94 →
My 2005 Chevy Trailblazer is completely going crazy it seems everything electrical is going wrong with it. I am afraid to let my wife or my kids drive in it because I never know what's going to go wrong while driving. My whole gas system is gone from fuel level indicator to the gauge. My entire dashboard is not working. Lights are going out. What is crazy about this is that I am one of thousands that this is happening to. Chevy needs to fix this problem before someone does get killed. Waiting for fatalities before making Chevy fixes there awfully made vehicles is unacceptable. I understand the situation our economy is in but these thousands of Trailblazer owners that are having these problems shouldn't be paying thousands of dollars to be getting there entire electrical problem fixed. I do not know one owner of a 2006 Trailblazer that does not have this same problem. …
Fuel gauge has been ready empty for several months. I looked on internet to see how to fix or possible problems. I noticed there was a letter sent years ago to the affect that GM would cover half the cost to repair, up to 10 years in service or 100,000 miles. When I contacted dealer the car was in service 10 years and 2 weeks and has 84,000 miles. I was informed GM will not help cover expense for repair do to time in service. I am questioning if this could become a recall or extended in service dating for this problem.
Lights
There is already a recall out for the 2006 model year, but I know that mine is part of it. I have a 2005 Trailblazer and the headlights keep intermittently going out as I am driving down the road. This problem as happened to me before in the past and I was able to finally remedy the issue by replacing the relay. The problem has now returned and I have even been pulled over multiple times for it. After doing a quick google search today I discovered that there are tons!!!!! Of people with the same issue going back as far as 2002. Http://www.topix.com/forum/autos/Chevrolet-Trailblazer/t32jtl93i9fkauf4n http://forums.trailvoy.com/showthread.php?t=47492 http://chevroletforum.com/forum/Trailblazer-27/2003-Trailblazer-headlights-2588/ I also ran across that GM has issued a recall for headlights, but it only covers years 2006-2008. …
Driving 6 people to pittsburgh international airport at 3 am 8/5/17 on the parkway to catch a flight for a vacation when noticed low beam headlights were not working. Do not know how long I was driving before this was noticed. Low beams worked the evening of 8/12/17 @ 10 pm after returning to pittsburgh airport and driving home. Low beams did not work again on the evening of 8/24/17 when driving home from a baseball game. Repairs were completed 9/1/17 by nick Chevrolet in tarentum, pa. I had asked before and after the repairs whether this would be covered under recall but was told no because my VIN number was not a part of the recall for this issue. They made it seem like this was a separate issue from the known low beam issue recall of other Chevy models. …
Frequently asked questions
Is the 2005 Chevrolet Trailblazer EXT 370 a good car?
Based on 237 owner complaints filed with NHTSA, the 2005 Trailblazer EXT 370 rates avoid: 33.2× as many complaints as a typical year of the Trailblazer EXT 370 at the same age. It is one of the Trailblazer EXT 370 years we suggest avoiding. 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 2005 Chevrolet Trailblazer EXT 370?
The electrical system — 101 complaints, 43% of all complaints for this model year, most often about instrument cluster/panel. Next are the fuel & propulsion system (94) and lights (17).
How many recalls does the 2005 Chevrolet Trailblazer EXT 370 have?
NHTSA lists no recalls for the 2005 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 2005 Chevrolet Trailblazer EXT 370 problems happen?
The median mileage reported in complaints is about 70,000 miles; 25% 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.