2006 Chevrolet Trailblazer Ext problems, complaints & recalls
Most-reported problem areas: Fuel System, Gasoline (96) · Electrical System (21) · Fuel System, Other (15)
🧭 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
168 NHTSA complaints that reported an odometer reading.
Safety recalls (4)
Visibility:power Window Devices And Controls 2015-09-24 · campaign 15V599000 · 9,932 vehicles
Defect: General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles. 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. Previously, the affected vehicles may have had their master power window switch module treated with a protective coatin
Risk: 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.
Fix: GM will notify owners, and dealers will install a new driver's door switch module, free of charge. The recall began on November 2, 2015. Owners may contact Buick customer service at 1-800-521-7300, Chevrolet customer service at 1-800-222-1020, and GMC customer service at 1-800-462-8782. GM's number for this recall is 15700.
Exterior Lighting:headlights 2015-08-14 · campaign 15V519000 · 429,170 vehicles
Defect: General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate.
Risk: 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.
Fix: GM will notify owners, and dealers will replace the HDM, free of charge. The recall began on May 17, 2016. Owners may contact Buick customer service at 1-800-521-7300 or Pontiac customer service at 1-800-762-2737. GM's number for this recall is 14291.
Visibility:power Window Devices And Controls 2014-07-02 · campaign 14V404000 · 184,611 vehicles
Defect: General Motors LLC (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. 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. The short may also cause ove
Risk: 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.
Fix: GM will notify owners, and dealers will inspect the part number on the door module, and install a new door module if necessary, free of charge. Parts for the remedy are not currently available. An interim letter was mailed to owners in August 2014. A second owner letter will be mailed when parts are available. Owners may contact GM customer service at 1-800-521-7300 (Buick), 1-800-222-1020 (Chevrolet), 1-800-462-8782 (GMC), 1-800-955-9007 (SAAB), and 1-800-255-6727 (Isuzu). GM's number for t
Visibility:power Window Devices And Controls 2013-06-13 · campaign 13V248000 · 193,652 vehicles
Defect: General Motors (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. 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. The short may also cause overheating, which could melt comp
Risk: 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.
Fix: Owners will be contacted and dealers will test the driver's door module. If the module is functioning properly, a protective coating will be applied. If the module is not functioning properly, it will be replaced. These repairs will be done free of charge. GM will notify Buick, Chevrolet, and GMC owners, Isuzu and Saab will contact their respective owners. The recall began on August 2, 2013. Buick owners may contact the owner center at 1-800-521-7300, Chevrolet owners at 1-866-694-6546, GMC
Service bulletins (169)
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.
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.
Unknown Or Other 2024-09-09 · 02-00-89-002X · Service Bulletin/Repair Instructions
this service bulletin provides information for dealers/technicians on when and how to submit a field product report (fpr) (u.s. and canada dealers only).
Unknown Or Other 2024-09-06 · PIT3271P · Service Bulletin/Repair Instructions
this preliminary information communication provides information to the technician about changing the tire and wheel size on vehicles. general motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. technician s
Showing the 6 most recent of 169 bulletins. Search all of them free at nhtsa.gov.
What owners report
2019-06-11 · Engine“on august 18, 2017, i leased-to-own a 2006 chevrolet trailblazer from action auto of tupelo, ms. around the first week of october of 2018, i had lend said vehicle to my sister. she contacted me saying that the engine was making a knocking noise, and brought the vehicle back to me, where i inspected it while it was stationary. to rule out everything…”
2018-05-16 · Power Train · 135,000 mi“transmission slipping and selinoids…”
2017-05-12 · Unknown Or Other · 💥 crash“takata recall if fluid, such as melted snow containing road salt, enters the driver's door module, it may cause 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 may stop working. the dealership cannot fix the vehicle due to the vehicle being …”
2016-12-08 · Exterior Lighting · 200,000 mi“headlights turn off while driving. happens with regularity. headlight relay defective. no replacement part available. gm denies that a recall exists. *tr…”
2016-10-18 · Fuel/Propulsion System · 52,000 mi“" takata recall" gm said my recall had expired on the fuel sensor in 2015..i had it replace twice...2007 and 2009...so many recalls could not remember until going through files and found i did have these replaced…”
2016-09-21 · Electrical System · 150,000 mi“tl* the contact owns a 2006 chevrolet trailblazer ext. while driving various speeds, the vehicle would stall and shut off without warning. the vehicle would have to be jumpstarted in order to restart. the failure recurred, but the vehicle would not restart. the contact took the vehicle to a certified mechanic who was unable to identify the cause of…”
2016-09-09 · Electrical System“both rear parking tail lights does not turn on, while both front parking lights are operational. brake lights, rear turn signals, reverse lights, doors unlock light are all operational.…”
2016-08-16 · Exterior Lighting · 110,000 mi“the headlights are not working properly. sometimes the headlights work but other times they turn off. the high beams and marker lights are not affected. this also applies to the daytime running lamps and occurs in motion or at a stop.…”
2016-04-08 · Exterior Lighting · 1 mi“my low beam headlights went out which shows it's a relay bad online it shows that there was a recall but in the database it doesn't show up for my vehicle…”
2016-02-20 · Seats“my driver side seat heated seat short circuited and looks like it caught on fire briefly. my head lamp module went bad and is recalled but no remedy has been solved, dealership replaced at my expense but i cannot get reimbursement for repair due to remedy not yet available. recall date was nov 25th 2015 am i suppose to drive without lights for 13 …”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.