Is the 2002 Chevrolet Trailblazer a bad year?
1,148 owner complaints to NHTSA. Transmission complaints: 310, 31× a quiet Trailblazer year.
Keep it, but watch the transmission
Half of the transmission complaints for this year were filed at 42k–97k miles, where you are now.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2002 Trailblazer owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 66,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| Transmission and drivetrainSTANDS OUT | 310 (27%) | 42k–97k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Electrical systemSTANDS OUT | 180 (16%) | 35k–126k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Exterior lightingSTANDS OUT | 143 (12%) | 26k–97k miles · around this mileage | — |
| Fuel systemSTANDS OUT | 132 (11%) | 50k–128k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Visibility and wipersSTANDS OUT | 106 (9%) | 25k–80k miles · around this mileage | — |
| Engine and coolingSTANDS OUT | 48 (4%) | 48k–82k miles · around this mileage | Water pump replacement $400–$1,106 · Timing chain replacement $1,000–$4,000 |
| Seat beltsSTANDS OUT | 48 (4%) | 22k–83k miles · around this mileage | — |
| Air bags | 102 (9%) | 45k–110k miles · around this mileage | — |
| Engine | 101 (9%) | 21k–111k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Brakes | 53 (5%) | 21k–94k miles · around this mileage | Brake pad replacement (one axle) $115–$390 · Brake pads and rotors replacement (one axle) $200–$1,084 |
| Steering | 42 (4%) | 34k–81k miles · around this mileage | Steering rack and pinion replacement $700–$2,100 |
| Body structure | 40 (3%) | 58k–110k miles · around this mileage | — |
| Equipment | 38 (3%) | 16k–69k miles · around this mileage | — |
| Suspension | 33 (3%) | 40k–148k miles · around this mileage | Ball joint replacement (one joint) $200–$500 · Control arm replacement (one arm) $200–$900 |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 66,000 miles. Not a quote.
What owners reported alongside their complaints
Of 1,148 complaints: 103 mention a crash · 35 mention a fire · 74 report an injury · 13 say the car was towed.
No complaints in the last 12 months; the newest was filed in Mar 2025.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
I own a 2002 cheverolet trailblazer with 66 thousand miles and have had the transmission go out.
We bought a new 2002 trailblazer. Never used the four wheel drive until it had 39,000 miles on it. At that time, found out we would need to replace a transmission module.
I was driving down the road and my chevy 2002 trailblazer would not drive right and it started making a loud screeching noise and then I pulled over and I could not go in reverse.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 66,000 miles), not by content. Unverified.
Recalls for the 2002 Chevrolet Trailblazer: 13
Certain poli-auto combination headlamp assemblies, p/nos. 11-728, 11-728D, 11-710, 11-419, 11-713, 11-703, 11-704, 11-708P, 11-735, 11-725, 11-726, 11-716 (P&c), 11-721-1, 11-733, 11-729, 11-730, and 11-732, sold as replacement lamps for use on certain passenger vehicles. Without the amber reflectors, the vehicle will be poorly illuminated, possibly resulting in a vehicle crash without warning.
On certain sport utility vehicles, vibration and heat may cause the tail lamp/stop lamp bulb to loosen in its socket. If this occurs, the bulb may flicker and eventually become inoperative. An inoperative brake lamp will not convey the driver's intention of stopping to drivers in following vehicles, and an inoperative rear turn signal lamp will not convey the driver's intention to turn to drivers in following vehicles.
Certain light duty pickup trucks and sport utility vehicles fail to conform to federal motor vehicle safety standard no. 209, "Seat belt assemblies." One of the two sensors in the driver's and front passenger's seat belt retractors could be inoperative. If this were to occur, the safety belt may not restrain the occupant as intended during a crash, and could result in injury to the occupant.
Certain sport utility vehicles have windshield wiper systems that will not turn on, cease operation while in use, fail to turn off/on by themselves (Moisture sensitive wiper system)… Depending on the occurrence and weather situation, driver visibility could be reduced, which could result in a crash.
Certain minivans, passenger and sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 225, "Child restraint anchorage system." The owner's manual does not explain the meaning of the location symbols for the child restraint lower universal anchorage system. This does not meet the requirements of the standard.
Certain sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standards no. 101, "Control location, identification, and illumination" And no. 208, "Occupant crash protection." These vehicles do not comply with the standard.
Certain sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 114, "Theft protection." These vehicles are equipped with a mechanical override that could allow the ignition key to be removed with the shift lever in a position other than park. These overrides are not permitted unless the vehicle has a locking steering column.
Certain sport utility vehicles are missing welds on the rear floor plan. In a crash, missing welds could degrade performance of the third row seat and safety belt anchorage and occupants could receive greater injuries.
On certain sport utility vehicles, a fuel filter fitting can become disconnected. If this were to occur while attempting to start the engine, a no-start condition would result and fuel would be pumped out the fuel filter onto the ground. If the fitting becomes disconnected while the vehicle is in motion, the engine would stop due to inadequate fuel supply and cause a loss of power steering assist.
Certain passenger, Mini vans, and sport utility vehicles have an air bag inflator on the driver's side that could fracture at a weld during a deployment. Pieces of the inflator could strike and injure vehicle occupants and the air bag cushion would not inflate fully, reducing the capability of the bag to protect the driver.
Vehicle description: sport utility vehicles equipped with 4-WHEEL drive. The calibration of the transfer case control module could cause insufficient high speed gear engagement. If the gear is not engaged, the vehicle can roll when the transmission is in "Park" And a crash could result without warning.
Vehicle description: sport utility vehicles (4 wheel-drive). Some of these vehicles were built with a range shift collar in the transmission transfer case that contains cracks. This condition could result in a complete fracture of the range shift collar and subsequent loss of vehicle forward and reverse gears, and the inability to maintain "Park" Position.
Vehicle description: sport utility vehicles. Under certain circumstances the front lower control arm brackets may fracture. This fracture could result in separation of the front lower control arm from the frame. A separation could result in loss of vehicle control, resulting in a crash.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Chevrolet: 126
Repair instructions Chevrolet sent its dealers for symptoms seen in the shop on the 2002 Chevrolet Trailblazer. Ask a dealer or mechanic for a bulletin by its number.
Rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up
Possible location of an internal coolant leak from a specific cylinder head and location
Guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system
Proper way to install the pistons in an engine
NHTSA defect investigations: 10
Loss of Headlights
Fuel pump module leaks gasoline
Fuel pump module leaks gasoline
Brake lamp failure
Brake lamp failure
Neighbouring years
2001 Trailblazer: 20 complaints, keep it · 2003 Trailblazer: 901 complaints, keep it.
Every Chevrolet Trailblazer year
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Questions
Is the 2002 Chevrolet Trailblazer a bad year?
1,148 owner complaints to NHTSA. Transmission complaints: 310, 31× a quiet Trailblazer year. At 66,000 miles the tool says: Keep it, but watch the transmission. Half of the transmission complaints for this year were filed at 42k–97k miles, where you are now.
What are the most common problems with the 2002 Chevrolet Trailblazer?
By owner complaints to NHTSA: transmission and drivetrain (310), electrical system (180), exterior lighting (143), fuel system (132), visibility and wipers (106). Half of the transmission complaints were filed between 42k–97k miles.
How many recalls does the 2002 Chevrolet Trailblazer have?
13 recall campaigns list this model year: Exterior lighting (NHTSA 06E025000), Exterior lighting (NHTSA 04V-527), Seat belts (NHTSA 04V-201), Visibility and wipers (NHTSA 04V-046) and more. A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.