Is the 2007 Chevrolet Trailblazer a bad year?
732 owner complaints to NHTSA. Engine and transmission complaints are in line with other Trailblazer years.
Keep it
Engine and transmission complaints for the 2007 Chevrolet Trailblazer are in line with other Trailblazer years. Fuel system, electrical system, exterior lighting and 1 more stand out for this year: see below.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2007 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 56,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| Fuel systemSTANDS OUT | 311 (42%) | 43k–74k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Electrical systemSTANDS OUT | 200 (27%) | 60k–110k miles · ahead | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Exterior lightingSTANDS OUT | 151 (21%) | 80k–148k miles · ahead | — |
| Visibility and wipersSTANDS OUT | 82 (11%) | 61k–110k miles · ahead | — |
| Steering | 23 (3%) | 55k–120k miles · around this mileage | Steering rack and pinion replacement $700–$2,100 |
| Stability control | 17 (2%) | 54k–123k miles · around this mileage | — |
| Transmission and drivetrain | 15 (2%) | 42k–112k miles · around this mileage | CV axle / CV joint replacement (one side) $300–$1,500 · Automatic transmission replacement $2,500–$7,000 |
| Brakes | 12 (2%) | 47k–105k miles · around this mileage | Brake pad replacement (one axle) $115–$390 · Brake pads and rotors replacement (one axle) $200–$1,084 |
| Body structure | 11 (2%) | 34k–105k miles · around this mileage | — |
| Speed control | 11 (2%) | 38k–118k miles · around this mileage | — |
| Suspension | 7 (1%) | 26k–73k miles · around this mileage | Ball joint replacement (one joint) $200–$500 · Control arm replacement (one arm) $200–$900 |
| Engine | 33 (5%) | 65k–102k miles · ahead | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Air bags | 27 (4%) | 65k–134k miles · ahead | — |
| Seat belts | 8 (1%) | 68k–139k miles · ahead | — |
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 56,000 miles. Not a quote.
What owners reported alongside their complaints
Of 732 complaints: 19 mention a crash · 56 mention a fire · 16 report an injury · 3 say the car was towed.
No complaints in the last 12 months; the newest was filed in Oct 2025.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
My fuel gauge is starting to fluctuate. I just filled it up and when I go down the road it will go down at least a quarter of a tank and when I stop and let it run idle for awhile it will go back to where it was.
I was driving my 2007 trailblazer home after a 150 mile trip to columbus and noticed oil spots on my driveway.
I read about: GM recalling 1.4 million vehicles for fire hazard by peter valdes-dapena, senior writerjune 9, 2010: 10:03 am et.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 56,000 miles), not by content. Unverified.
Recalls for the 2007 Chevrolet Trailblazer: 5
Fluid may enter into the driver's door master power window switch module, causing corrosion that could result in a short in the circuit board, causing window switches to become inoperative. The protective coating may not eliminate the risk that the circuit board could short and result in a fire, even while the vehicle is unattended.
In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate. Headlamps that do not illuminate reduce the driver's ability to see the roadway and reduce the vehicle's visibility to oncoming vehicles, both of which increase the risk of a vehicle crash.
Fluid may enter the driver's door master power window switch module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. A short in the circuit board could lead to a fire, increasing the risk of personal injury. A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made.
Fluid may enter the driver's door module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. A short in the circuit board could lead to a fire, increasing the risk of personal injury. A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made.
Fluid may enter the driver's door module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. A short in the circuit board could lead to a fire, increasing the risk of personal injury. A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made.
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: 274
Repair instructions Chevrolet sent its dealers for symptoms seen in the shop on the 2007 Chevrolet Trailblazer. Ask a dealer or mechanic for a bulletin by its number.
Intermittent no crank, no start, or start stall concern with the security light coming…
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
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: 4
Loss of Headlights
Driver's Master Power Window Switch
Driver's Master Power Window Switch
Fuel Level Gauge System Failure
Neighbouring years
2006 Trailblazer: 1,108 complaints, keep it · 2008 Trailblazer: 193 complaints, keep it.
Every Chevrolet Trailblazer year
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Questions
Is the 2007 Chevrolet Trailblazer a bad year?
732 owner complaints to NHTSA. Engine and transmission complaints are in line with other Trailblazer years. At 56,000 miles the tool says: Keep it.
What are the most common problems with the 2007 Chevrolet Trailblazer?
By owner complaints to NHTSA: fuel system (311), electrical system (200), exterior lighting (151), visibility and wipers (82), steering (23).
How many recalls does the 2007 Chevrolet Trailblazer have?
5 recall campaigns list this model year: Visibility and wipers (NHTSA 15V-599), Exterior lighting (NHTSA 15V-519), Visibility and wipers (NHTSA 14V-404), Visibility and wipers (NHTSA 13V-248) 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.