Chevrolet Trailblazer Reliability: How Long Will it Last?

Josh Barrett
Feb 18, 2022

Chevy’s Trailblazer dominated the car market through much of the 2000s but was pulled in 2009 over poor sales. A first-gen. model now costs around $5,000, making it an attractive budget option. But how much longer can you really get out of a 13-17-year-old SUV?

2009 Chevrolet Trailblazer - Photo by Chevrolet

Key Points

  • There’s no shortage of first-generation Chevy Trailblazers for sale, but most units now have over 150,000 miles on the odometer.
  • Routine powertrain maintanence will up the odds of the SUV reaching 200,000 miles or more without burning a hole in your pocket.
  • Trailblazer models from 2002-2006 are more likely to have engine issues, with many owners reporting failure as early as 65,000 miles.
  • Units from 2002-2005 have four-speed transmissions that are more likely to need rebuilding or replacing before the 100,000-mile mark.
  • Chevy reintroduced the Trailblazer in 2021 as a subcompact SUV, but the model still needs more time on the road to tell how long it might last.

How Long will a Chevrolet Trailblazer Last? Owners Across the Internet Often Claim 12.5 to 17 Years of Reliable Service

The Chevrolet Trailblazer started as an upper trim level for the 1999 Blazer but got its own midsize, body-on-frame platform in 2002. This first-gen. Trailblazer ran until 2009 before Chevy pulled the SUV from the U.S. market over poor sales.

For those wondering how long a Chevy Trailblazer will last, owner reviews across sites like Vehicle History and J.D. Power, and online forums like TrailVoy, consistently boast 150,000-200,000 miles. That equates to about 12.5-17 years of service driving 12,000 miles annually. 

While some owners quote minimal maintenance, regular service is typically crucial to a Trailblazer’s longevity. Of course, some years fare better than others for one reason or another, a topic we’ve covered in detail in another article

2009 Chevrolet Trailblazer - Photo by Chevrolet

Regular Maintenance, Including On-time Oil Changes and Transmission Fluid Flushes, is Crucial to a Chevy Trailblazer Lasting 200,000 Miles or More

Consider a vehicle’s endpoint to be when the cost to keep it running outweighs its worth.

A 2009 Trailblazer has a Blue Book value of about $6,600. With an engine or transmission replacement costing at least half that, timely, routine maintenance is paramount.

The standard engine in most Chevy Trailblazer trims is a 4.2L Vortec V6, which struggled early on but became a solid motor. Unlike newer vehicles, which boast 7,500-10,000-mile oil change intervals, the first-gen. Trailblazers fall closer to every 3,500-5,000 miles.

An oil filter helps keep the oil free of contaminants, but it will clog over time. In general, you should replace the oil filter every other oil change, or about every 7,000-10,000 miles.

For the transmission, the fluid must be flushed and replaced every 10,000-15,000 miles for optimal results. Be sure to consult the owner’s manual for a full-service breakdown.

Looking at a Chevrolet Trailblazer from 2002-2006? Be Cautious as a Few Too Many Owners Mention Engine Failure Before 100,000 Miles

With engine and transmission replacements costing more than half the value of the average first-gen. Trailblazer, avoiding years with powertrain issues can work in your favor.

As stated earlier, a 4.2L V6 is standard in most models, and while it had issues early on, the final few years were decently reliable. Other engines you might run across include 5.3L and 6.0L V8s, but these are exceptionally rare.

NHTSA complaints, sorted by Car Complaints, show models from 2002-2007 struggle the most with engine problems. A few mentions include stalling, misfiring, unintended acceleration, knocking sounds, and in some cases, outright seizure.

Failure reports occur as early as 65,000 miles and cost an average of over $4,500 to fix. No matter the year, it’s best to have a technician inspect the engine for excess internal wear.

2009 Chevrolet Trailblazer - Photo by Chevrolet

Chevy Trailblazer’s Automatic Transmission is the SUVs Weakest Link, with Models from 2002-2005 Being Especially Troublesome

Chevy used the same four-speed automatic transmission in all Trailblazer models, though the rare SS trim got a heavier-duty version. Unfortunately, its first few years were not very reliable, with reports of failure coming in at an average of around 100,000 miles.

Drivers report the transmission not shifting out of park, reverse, or past third gear. Most drivers mention having to rebuild or replace the unit for an average of over $2,000.

Chevrolet Trailblazers from 2002-2005 are the most likely to run into transmission failure. Thankfully, mentions of the transmission going out are far less frequent in later models.

Be sure to have the technician also inspect and test the transmission. It’s very possible the unit has already been replaced and you can reap the benefits. However, be cautious if it’s still running on the original transmission and has over 100,000 miles.

Chevrolet Trailblazer Returns for 2021 as a Subcompact, Lacks Reliability Record of First-generation Models

While its dimensions have shrunk considerably, Chevy brought the Trailblazer nameplate back for 2021 as a subcompact SUV.

Early figures from the NHTSA look promising, with few powertrain-related issues being reported. Still, 2021 and newer Trailblazers need more time on the road to see how they fare long-term.

2021 Chevrolet Trailblazer - Photo by Chevrolet

Should You Buy a High Mileage Chevrolet Trailblazer? Stick with Models from 2007-2009 for the Most Reliable Experience

For the best odds, look for a 2007 or later model, which have far fewer reports of failing powertrain components.

If you can find a unit with around 150,000 miles and the engine sounds normal, the transmission shifts smoothly, and a trusted mechanic says it’s been well maintained, it will likely last another few years at least.  

Considering Blue Book prices range between $4,000 to $6,000 for a later model, a high mileage Chevy Trailblazer can be a fantastic overall value.

Photos: Chevrolet

Owner Reviews

accountCircle Richard on August 27, 2023
Great SUV 2002 Trailblazer LT
I picked this up at auto auction in 2008 with 70,000 on it with the intent to sale it and make a few dollars. The engine has a knock at start up that goes away as it warms up I could not hear any noise when I bought it so I was stuck with it a $12,000 dollar loss. Will my wife started driving it and liked it, there was nothing not to like it has all options and drives great. Now my son drives it still has the knock at cold start that goes away as it warms up runs like a top and has 247,000 miles on it. I bought a new engine for it in 2009 that is still sitting in the shop waiting for its chance but it wont see it this thing wont die. This turned out to be the best $12,000 I ever spent. Yes I have put tires and all parts you have to put on any car over the years but it never left my wife or may son great truck.
accountCircle Cindy on February 26, 2024
Still running great
Bought my '07 in 2011 with just under 98,000 miles on it. It now has 225,000 and it still runs great. Regular maintenance, brakes, tires, replaced the front hubs. A few electrical glitches from time to time with dash lights, but it probably needs the DIC panel changed. As long as it runs, I'll keep driving it. Wish they still made this model of Trailblazer!
accountCircle Yarbi Romero on May 6, 2023
Great car on everything
My Trailblazer I had for one year, I have 83000 miles I love my American car has a 1.3 3 cylinders engine with a turbo my economy is been on the street 30 mpg on the freeway 33 to 34 mpg I rideshare for Lyft I will buy another one on the spot, I wish they made a electric one. Go and test one I had no problems with it I use Mobil one oil. My model is a GS.
accountCircle Steven R on February 18, 2022
My 2002 Chevrolet Trailblazer Is The Most Reliable Vehicle
The only problem I have with my truck is that the steering wheel has a lot of play. Other than the steering wheel is a bit loose my truck runs great. It drives smooth, the air blows nice and cold and is very reliable. Since I've had my truck I haven't had to do any major repairs other than buying new tires and replacing the breaks.
accountCircle Nicole R on February 18, 2022
Reliable Vehicle With Great Cargo Is The 2005 Chevrolet Trailblazer
I find the seats very comfortable. I like the dual air control so that the driver can be as comfortable. I like the huge cargo space and that the seats fold down flat for hauling even bigger things. This car has been reliable and always met all of our needs.
accountCircle Lisa H on February 18, 2022
The 2006 Chevrolet Trailblazers Are The Best SUV
I love this vehicle because it is very reliable. Good on gas for it to be an SUV. I had this vehicle for about 2 years, I brought it used at 130, 00 miles. It now has 200, 00 miles and the engine still runs strong.
accountCircle Scott on August 5, 2023
Value for the money
Running great for 220,000 miles so far. I keep up the maintenance which is key to vehicle survival. Hub bearings, water pump, brakes, normal wear items...expect to get 300,000 or more.easily. Rust free state.
accountCircle Andrew moore on January 16, 2023
Mine is an 05 lt model, and i have 313,000 mi on it. W no.major issues
Outside of the normal brakes and other consumable items on a Trailblazer I have had extremely great luck with my '05 Chevy Trailblazer as it just turn $313,000 MI on the original transmission and engine
accountCircle Vivian T on February 18, 2022
The 2003 Chevrolet Trailblazer Is Very Reliable, Spacious, Family Car
I love this vehicle because it is very spacious and reliable. It has about 120,400, it's still working great. Yes, I had to fix things here and there but it's like every other car.
accountCircle Sonja on April 10, 2023
Great and Reliable 05 chevy trailblazer
My truck has over 221 , miles on her. Regular maintenance on her. She's a real get up and go truck. Runs smooth and silent,and breaks on a dime. I've had no major issues with her.
accountCircle Gen S on February 18, 2022
2004 Chevrolet Trailblazer Is What I Was Looking For
I recently purchased my 04 Trailblazer with only 120,000. It's great on gas mileage, very reliable, has comfortable bucket seats, and is so clean it could be brand new.
accountCircle Sonja h on April 10, 2023
Great Truck
Good performance for an 05 Chevy trailblazer. No major issues. Quiet while running, Breaks on a dime and very dependable,good on gas. She has over 221, miles on her.
accountCircle Aaron on May 20, 2023
255,750 Miles on my 07
I bought awhile back a 07 trailblazer ls model was in great condition just couple days ago it hit 255k an she still running strong.
accountCircle Blain on February 8, 2023
Very reliable
2002 trailblazer with 505000 km, has been great with no major problems. Original engine and transmission, this thing will not quit
accountCircle BWL on December 14, 2023
2004 Trailblazer
Have a 2004 Trailblazer with 242k miles in the original engine and transmission. Still runs great.
accountCircle Ted Peelot on March 2, 2022
Gearhead
Who doesn't change the filter anytime the oil is changed?
avatar Josh Barrett
After 13+ years of hustling in the exciting world of car sales, Josh Barrett took off to travel the world with his dog Teemo. He's since been an automotive journalist and editor for Vehicle History as an original member of the content team. His works can also be found on automotive sites AutoChimps and CashCarBuyers, including in-depth transmission troubleshooting guides and car-care advice.
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