2002 Chevrolet Trailblazer Ext problems, complaints & recalls
Most-reported problem areas: Power Train:automatic Transmission (18) · Fuel System, Gasoline (9) · Fuel System, Gasoline:storage:tank Assembly:filler Pipe And Cap (8)
🧭 Reliability snapshot
Compared against other Chevrolet Trailblazer Ext model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
85 NHTSA complaints that reported an odometer reading.
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (94)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2025-07-18 · PIP5601C · Service Bulletin/Repair Instructions
this pi communicates the requirement to provide a pico file to receive diagnostic assistance from tac.
Electrical System 2024-08-26 · General Communication · Service Campaign
vehicle wide programming (vwp) is a new process to update software on gm vehicles. it provides the ability via a single selection within techline connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). the updating of modules is com
Power Train 2024-07-24 · 24-NA-141 · Service Bulletin/Repair Instructions
gm is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. the damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. this bulletin advises the dealers to be more careful not to damage the transmissions durin
Fuel/Propulsion System 2024-06-28 · 16-NA-383 · Service Bulletin/Repair Instructions
this service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of 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.
Unknown Or Other 2024-06-17 · 18-NA-099 · Service Bulletin/Repair Instructions
this bulletin provides information for use on a product assistance claim (pac), which is formerly known as a product allegation resolution (par) claim.
Electrical System 2024-06-06 · 24-NA-098 · Service Bulletin/Repair Instructions
this service bulletin provides information for dealers/technicians on service programming system (sps) error codes e4398, e4399, e4401, e4403, m4404, m4413, m6954, m6955, e4414, e4423, e4491, e4492, or e6961 and resolution information.
Showing the 6 most recent of 94 bulletins. Search all of them free at nhtsa.gov.
What owners report
2017-05-21 · Unknown Or Other · 140,000 mi“smelling gas even though no gas was spilled. the car is stationary in garage. i feel it is unsafe to keep in the garage and i am parking it outside. i am also worried about driving.…”
2014-02-17 · Fuel System, Gasoline · 117,150 mi“my check engine turned on inside the car it was smelling like gas . i went to a local shop they did a diagnostic test and its a fuel tank leak . its leaking right were the fuel goes in the tank . i called chevrolet and they said there is no recall . but i found a recall for this vehicle action #eao7009. *tr …”
2013-10-15 · Visibility/Wiper · 72,000 mi“the wipers stop half way across the windshield making it impossible to see when it is raining. regardless of the speed of the wipers. this is going to cause an accident. i have only had this vehicle for about 2 months. my disabled son has to ride in this vehicle. it needs to be safe and gm could care less. something needs done. this is an on going…”
2013-08-13 · Electrical System · 65,000 mi“outside temperature displaying 50 degrees regardless of actual outside temperature. when actual temperatures below freezing this represents a hazard. when temperatures above 50 degrees air conditioning not responsive (even when temperatures in excess of 100 degrees, "heater" comes on due to erroneous outdoor temperature reading). poor fuel milea…”
2013-07-19 · Exterior Lighting · 177,000 mi · 🔥 fire“pulled into driveway, lights would not go off, a few minutes later smoke was coming out from under hood and it smelled like burning plastic. popped hood and fuse block and relay we smoking and melting! got fire extinguished and pulled the head light relay switch, but it had melted through the block!!!! *tr…”
2013-06-28 · Exterior Lighting · 128,000 mi · 🔥 fire“the headlight wiring inside of the lens assembly over heats and melts the electrical connector going to the bulb and the insulation on the wiring. this has happened to both headlights on more than one occasion. had to go and have the electrical wiring plus connector replaced. *tr…”
2011-03-19 · Electrical System · 130,000 mi“ larger occurring issues which could effect safety include the vehicle randomly deciding to change from 2wd/a4wd/4wdh4wdl whenever it wants to under various weather/road conditions (including perfect weather and road surface) and occasional random ignition system failure this is not safe at all i have taken it to the chevy dealership and they said …”
2011-02-01 · Power Train:automatic Transmission · 120,000 mi“tl*the contact owns a 2002 chevrolet trailblazer ext. while the vehicle was parked he attempted to shift gear out of park position and it shifted into a different gear. the vehicle was taken to a local mechanic who advised him that the gear shift needed to be repaired. the vehicle was not repaired. the failure continued to occur. the dealer diagn…”
2011-01-16 · Electrical System · 19,000 mi“intrument panel quits functioning at any given time and may start working at anytime, accuracy is questionable. this includes speedometer, temperature, charging and fuel gauges. *ln…”
2010-08-31 · Visibility · 30,000 mi“our 2002 chevy trailblazer mirrors will not reset to the memory positions. the mirrors change positions by themselves and have to be readjusted everytime the car ignition is turned off. *tr…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.