🚗 AutoDefect IQ

2009 Chevrolet Trailblazer problems, complaints & recalls

Most-reported problem areas: Exterior Lighting (10) · Air Bags (4) · Electrical System (3)

🧭 Reliability snapshot

100 /100
✓ Typical or better for this model

Compared against other Chevrolet Trailblazer model years — complaint volume vs the model's median year, recalls and severity. How we score →

27
Complaints
0
Recalls
963
Service bulletins
5
Crashes reported
0
Fires reported
0
Deaths

Safety recalls (0)

No recalls on record for this model year (campaigns announced since 2010).

Service bulletins (963)

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 2025-09-09 · 13598 · Other

new vehicle monitoring programs section in ivh

Unknown Or Other 2025-08-07 · PIC5650M · Service Bulletin/Repair Instructions

this preliminary information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. technician may find diagnostic trouble codes b3055, b3060, b3935, c0750, c0755, c0760, c0765, and/o

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.

Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions

this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.

Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions

this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.

Unknown Or Other 2025-05-30 · PIT5074R · Service Bulletin/Repair Instructions

this preliminary information communication provides information to the technician about the use of j-35616-64b and mini 50 terminal test probe, replacement terminals, and terminated leads.

Showing the 6 most recent of 963 bulletins. Search all of them free at nhtsa.gov.

What owners report

2026-06-28 · Unknown Or Other

“my first complaint is that headlights, low beam, would not work. only high beams worked. the issue stopped, unexplainable, on its own, has not occurred again. the 2nd complaint is the radio volume would 'slip' as if there were a loose wire to the speakers, and loss of sound became more frequent and for longer periods of time, eventually all sound …”

2019-03-06 · Air Bags · 💥 crash

“traveling on highway applied brakes and hit car in rear. air bags not deployed.…”

2018-09-24 · Exterior Lighting · 136,731 mi

“tl* the contact owns a 2009 chevrolet trailblazer. the contact stated that the headlights and daytime running lights failed to operate. the contact had to use the high beam headlights to drive. there were no warning indicators illuminated. the local dealer was not contacted. the vehicle was not diagnosed or repaired. the manufacturer was not contac…”

2018-02-05 · Vehicle Speed Control · 104,000 mi

“the engine lights come on, then the car starts chugging and shuddering and sounds and feels as if it will shut down. i am not able to accelerate. this is a serious safety risk in traffic, especially if driving on the interstate. the car will not move at anything over 20 mph, if it even accelerates at all. i usually end up coasting to the side o…”

2017-11-03 · Exterior Lighting · 157,654 mi

“while driving the low beam headlights will go out. and not come back on you have to turn on high beams to have headlights stopped and pulled over turned off the vehicle turned it back on and low beams still did not come back on…”

2017-02-24 · Exterior Lighting · 85,000 mi

“the low beam headlights keep going out. all other lights stay on and the high beam lights work. only the low beam headlights are affected. this has happened while in motion and from a stopped position when first starting the car and putting it in drive. i have researched it on several group we sights and found that the problem is the headlight …”

2017-01-12 · Air Bags · 135,000 mi · 💥 crash

“tl* the contact owned a 2009 chevrolet trailblazer. while driving 70 mph, the contact's vehicle rear ended another vehicle. in turn, the contact's vehicle was struck by a semi-truck. the air bags did not deploy. a police report was filed. the contact sustained injuries to the head, knees, and arms, which required medical attention. the vehicle was …”

2016-07-16 · Exterior Lighting · 30,000 mi

“the headlights have failed. all the lights blink while you ride along. the two back doors will not lock or unlock and the front doors are starting to not lock or unlock properly. the items that let you know when a tire is low in air are failing. the last one costing over $100 to fix. i am getting very upset with the electric parts in this trailbla…”

2016-02-29 · Exterior Lighting · 80,000 mi

“tl* the contact owns a 2009 chevrolet trailblazer. while driving 65 mph, the headlamps failed to illuminate. the contact had to activate the high beam lights in order to continue driving. the contact learned that she needed to replace the fuse. the vehicle was repaired, but the new fuse only lasted six months. the vehicle will be diagnosed again pe…”

2016-02-01 · Exterior Lighting:headlights · 60,374 mi

“tl* the contact owns a 2009 chevrolet trailblazer. the contact stated that the headlights failed. the contact replaced the headlights bulbs several times however the failure was not corrected. the vehicle was taken to an independent mechanic where the failure was unable to be determined. the vehicle was not repaired. the manufacturer was not notifi…”

Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.

Other Chevrolet Trailblazer years