2002 Chevrolet Trailblazer Ext

100 federal complaints (120 component records) · 3 recall campaigns on file · 5 federal investigations · 89 service bulletins · 15 Canadian recalls
See all 4 model years of the Chevrolet Trailblazer Ext →
Engine
4.2L 6-cyl
Fuel
Regular
Drive
RWD
EPA economy
14 city / 19 hwy
Federal complaints
100
Recall campaigns
3
Specifications show one example EPA configuration for this model year; other engines, drivetrains, and trims exist and the records below cover all of them.
How to read this file. Complaint records are unverified owner submissions to the federal safety agency. Counts are raw, not adjusted for sales volume or vehicle age. Recall campaigns apply to the model; only a VIN check shows whether this car is affected or repaired. Parts shown are named by an editorial note or listed as a search directory; none is a diagnosis. Full methodology.

Fault profile

Complaint-component records on this vehicle, grouped by family. A complaint naming two systems counts once in each.

Fuel system
23
Power train
20
Engine & cooling
14
Electrical system
14
Glass & wipers
11
Lighting
11
Latches & locks
6
Body & structure
5
Complaints are owner-reported and not verified by the agency.

When it fails

The timing of this vehicle's reported failures, from the complaint file itself. A cluster tells you what to expect and when; it is shaped by reporting behavior as well as by the vehicle.

Vehicle age when the failure occurred

0 years old: 2 complaints01 years old: 0 complaints2 years old: 8 complaints3 years old: 19 complaints4 years old: 20 complaints5 years old: 17 complaints56 years old: 8 complaints7 years old: 13 complaints8 years old: 6 complaints9 years old: 1 complaints10 years old: 0 complaints1011 years old: 4 complaints12 years old: 1 complaints13 years old: 0 complaints14 years old: 0 complaints15 years old: 1 complaints1516 years old: 0 complaints17 years old: 0 complaints18 years old: 0 complaints19 years old: 0 complaints20+ years old: 0 complaints20+
Years between the model year and the owner's reported failure date. Based on 100 of 100 complaints with a usable failure date.

Odometer when the failure occurred

0,000 - 20,000 miles: 5 complaints020,000 - 40,000 miles: 12 complaints40,000 - 60,000 miles: 22 complaints40k60,000 - 80,000 miles: 14 complaints80,000 - 100,000 miles: 15 complaints80k100,000 - 120,000 miles: 5 complaints120,000 - 140,000 miles: 7 complaints120k140,000 - 160,000 miles: 3 complaints160,000 - 180,000 miles: 1 complaints160k180,000 - 200,000 miles: 0 complaints200,000+ miles: 0 complaints200k+
Owner-reported mileage at failure, in 20,000-mile bands. Based on 84 of 100 complaints reporting a plausible odometer (500 to 500,000 miles; unverified).

Known issues

The component families with the most complaint records against this vehicle. Counts, crash and fire figures belong to the whole family, not to any single named issue. Parts listed are related system parts, not a diagnosis.

Fuel system

23 complaint records
"(1) NO EVENTS LEADING TO PROBLEM (2) FUEL TANK REPLACEMENT LED TO FULL REPLACEMENT (3) REPLACED FUEL TANK WITH DEALERSHIP. *JB..."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse fuel system parts in the directory →

Power train

20 complaint records
"WHILE TAKING OFF FROM A TOLL BOOTH THERE WAS A BIG BANG AND THE TRANSMISSION WOULD NOT SHIFT INTO REVERSE AND MADE A VERY LOUD WHINNING NOISE WHE GOING FORWARD..."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse power train parts in the directory →

Engine & cooling

14 complaint records
"FAN CLUTCH FAILED AT 49,000 MILES AFTER INTERMITTENT ROARING SOUND ALMOST FROM DATE OF NEW PURCHASE 6-20-02. REQUIRED REPLACING AT MY $600 COST. *NM..."- one owner's federal complaint about this system; it may not describe the issue named above
Parts
No specific part is named for this issue. Browse engine & cooling parts in the directory →

Federal defect investigations

Formal investigations opened by the federal safety agency into this vehicle. An investigation is the step between a complaint pattern and a recall; not every one results in one.

InvestigationStatusComponentSubject
RQ17002
opened Apr 2017
closed Mar 2021Exterior LightingLoss of Headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac...
EA07009
opened Jul 2007
closed Aug 2008Fuel System, GasolineFUEL PUMP MODULE LEAKS GASOLINE
DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE...
PE07014
opened Mar 2007
closed Jun 2007Fuel System, OtherFUEL TANK LEAK
IN JUNE 2007, GM WILL EXPAND ITS SPECIAL POLICY TO ADDRESS FUEL TANK INLET CHECK VALVE (ICV) FRACTURES ON CERTAIN MODEL YEAR (MY) TRAILBLAZER EXT AND GMC ENVOY XL VEHICLES.THE EXPANDED POLICY COVERS MY 2002-2004 TRAILBLAZER EXT, GMC ENVOY XL, AND GMC ENVOY...
PE07013
opened Mar 2007
closed Jul 2007Fuel System, GasolineFUEL PUMP MODULE LEAKS GASOLINE
ODI HAS RECEIVED REPORTS THAT THE FUEL PUMP MODULE LEAKS FUEL AND OR VAPOR UNDERNEATH THE VEHICLE.GM STATES, THE FAILURE MECHANISM IS CORROSION OF THE FUEL PUMP MODULE FLANGE WHICH MAY LEAD TO A FUEL LEAK.CORROSION OF THE FUEL PUMP MODULE FLANGE IS THE RESULT...
EA04021
opened Aug 2004
closed Nov 2004Exterior LightingBRAKE LAMP FAILURE - led to recall 04V527000
GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR...

Recall campaigns

Safety-recall remedies are normally provided at no charge. Under US federal law the mandatory free remedy applies when the vehicle was no more than 15 years old at the time the defect was determined; manufacturers often cover older vehicles voluntarily. Canadian rules differ. Confirm eligibility with the manufacturer using the VIN. Each campaign number links to the federal record.

CampaignComponentSummaryRemedy
05V494000Latches/Locks/LinkagesCERTAIN SPORT UTILITY VEHICLES HAVE A REAR SIDE CLOSURE LATCH THAT MAY NOT LATCH OR UNLATCH DUE TO CORROSION CAUSED BY ROAD SPLASH, SUCH AS WATER AND ROAD SALT.Normally free
04V527000Exterior LightingON 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.Normally free
04V046000VisibilityCERTAIN 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), OR HAVE CONTINUOUS WINDSHIELD WASHER...Normally free

Transport Canada recalls

Recalls issued under Canadian law for this model year, from Transport Canada's Vehicle Recalls Database. Matched by model name, so a Canadian-market variant may appear here that was sold under another name in the US. Units are Canadian vehicles affected.

RecallSystemUnits (CA)Summary
2019420
2019-08-21
Other5,327Issue: This recall is for aftermarket replacement rear window glass produced by Vitro Automotriz. Certain rear window glass may not have been properly tempered.
2008178
2008-05-22
Electrical1,916On certain vehicles, the multifunction switch may develop an open circuit condition with the bottom contact of the hazard switch, causing the stop lamps and the hazard lamps to become inoperable (the center high mounted stop lamp and turn...
2005328
2005-10-27
Structure5,138Certain vehicles located in Ontario, Quebec, New Brunswick, Nova Scotia, Prince Edward Island, and Newfoundland & Labrador have a rear side door latch that may not latch or not unlatch due to corrosion caused by road splash, such as water...
2004390
2004-10-29
Lights And Instruments38,598On certain 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.
2004158
2004-05-10
Seats And Restraints10,976Certain vehicles fail to conform to CMVSS 209, seat belt assemblies. These vehicles have a condition where one or two sensors in the driver's and front seat passengers seat belt retractors may be inoperative.
Show 10 more Canadian recalls
RecallSystemUnits (CA)Summary
2004088
2004-03-09
Brakes52,776On certain vehicles, the brake hoses are not labelled with a designation that identifies the manufacturer of the assembly as required by CMVSS 106. This non-compliance has no effect on the performance of the involved brake hose assemblies.
2004045
2004-02-04
Electrical28,986On certain vehicles, water may seep into the windshield wiper module. If this were to happen, it could result in windshield wipers that will not turn on, cease operation while driving, fail to turn off, turn on by themselves, and/or...
2003048
2003-02-25
Powertrain24,685Certain vehicles fail to conform to CMVSS 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.
2002151
2002-08-13
Airbag14,654Certain vehicles may have a driver's side airbag inflator that could fracture at a weld during a deployment. Pieces of the inflator could strike and injure vehicle occupants and the airbag cushion would not inflate fully, reducing the...
2002070
2002-05-01
Fuel System5,463Certain vehicles may have a fuel filter fitting which becomes disconnected. This could result in a fire or engine stalling. Correction: Dealers will replace the fuel filter quick connect retainers.
2001285
2001-12-05
Electrical30,108Certain sport utility vehicles. The multifunction switch could develop an open circuit condition with the bottom connector in the hazard switch carrier that results in the stop lamps and the hazard lamps becoming inoperative.
2001252
2001-10-22
Powertrain1,068Certain sport utility vehicles Trailblazer and GMC Envoy (4 wheel-drive). The calibration of the automatic transfer case control module or a range shift collar that was not machined properly may cause insufficient high speed gear...
2001253
2001-10-22
Powertrain4,631Certain (4 wheel-drive) Trailblazer and GMC Envoy vehicle. The calibration of the active transfer case control module may cause insufficient high speed gear engagement.
2001226
2001-09-05
Powertrain64Certain 4WD vehicles were built with a range shift collar in the transmission transfer case that contains cracks.
2001098
2001-04-19
Suspension1,016On certain vehicles, either front lower control arm brackets may fracture, which could result in separation of the front lower control arm from the frame. This could result in loss of vehicle control, and a crash without prior warning.

Service bulletins and warranty extensions

Manufacturer communications to dealers on file with the federal agency: repair instructions, service campaigns, and warranty extensions. A warranty extension means the manufacturer may pay for a repair the recall table does not cover.

BulletinTypeComponentSummary
PIP5601C
Jul 2025
Unknown Or OtherThis PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
General Communication
Aug 2024
SERVICE CAMPAIGNElectrical SystemVehicle 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).
24-NA-141
Jul 2024
Power TrainGM 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.
16-NA-383
Jun 2024
EngineThis 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.
18-NA-099
Jun 2024
Unknown Or OtherThis bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
Show 55 more bulletins
BulletinTypeComponentSummary
24-NA-098
Jun 2024
Electrical SystemThis 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.
10-08-45-001H
Mar 2024
Electrical SystemThis bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
06-06-01-019C
Mar 2024
Engine And Engine CoolingThis bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
16-NA-383
Mar 2024
Engine And Engine CoolingThis technical 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.
22-NA-074
Feb 2024
Engine And Engine CoolingThis service bulletin provides service information to technicians on 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.
18-NA-099
Jan 2024
EquipmentThis bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
02-08-42-001J
Jan 2024
Exterior LightingThis informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
PI1394B
Jan 2024
Engine And Engine CoolingThis PI bulletin advises the technician on the proper way to install the pistons in an engine.
23-NA-219
Dec 2023
EquipmentThis service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
17-NA-170
Oct 2023
WheelsThis service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
10-00-89-006J
Sep 2023
EquipmentThis service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
23-NA-153
Sep 2023
Engine And Engine CoolingThe service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
18-NA-073
Aug 2023
Engine And Engine CoolingThis service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
17-NA-170
Apr 2023
WheelsThis service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
19-NA-219
Apr 2023
Engine And Engine CoolingThis diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
19-NA-219
Mar 2023
Engine And Engine CoolingThis diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
22-NA-009
Mar 2023
Engine And Engine CoolingThis service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
17-NA-073
Feb 2023
EquipmentThis warranty administration bulletin provides information regarding the field action courtesy transportation policy.
01-08-42-001O
Feb 2023
Exterior LightingThis service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
21-NA-124
Dec 2022
Engine And Engine CoolingThis service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
22-NA-074
Nov 2022
Engine And Engine CoolingThis service bulletin provides service information to technicians on 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.
22-NA-205
Oct 2022
Electrical SystemThis service bulletin provides information on Module Harvesting.
10-00-89-006I
Oct 2022
EquipmentThis service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
22-NA-195
Sep 2022
EquipmentThis service bulletin provides information on Handling Requests for Modifications to Permanently Import/Export Vehicles Between the U.S. and Canada.
22-NA-009
Sep 2022
Engine And Engine CoolingThis service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
22-NA-181
Sep 2022
Power TrainThis diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the engine or transmission.
20-NA-065
Aug 2022
Engine And Engine CoolingThis bulletin provides information on tools available to find an intake vacuum leak or exhaust leak to correct a condition of MIL Illuminated with Multiple Fuel Trim and/or Oxygen Sensor Codes Set.
22-NA-009
Jun 2022
Engine And Engine CoolingThis service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
22-NA-074
Mar 2022
Engine And Engine CoolingThis service bulletin provides service information to technicians on 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.
22-NA-009
Mar 2022
Engine And Engine CoolingThis service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
PIT3116B
May 2020
Engine And Engine CoolingThis Preliminary information communicates information to Clean the throttle body if the engine stalls at idle when the A/C comes on.
16NA383
Jan 2020
Equipment Adaptive/MobilityThis informational 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...
PIT4297A
Dec 2019
Engine And Engine CoolingThis Preliminary information communicates diagnostic information for a front noise.
PIT3254B
Nov 2019
Electrical SystemThis Preliminary information communicates information for setting up the SDM.
PIT3712A
Sep 2019
EquipmentThis Preliminary information communicates rear HVAC blower operation and diagnostic.
PIT4204A
Aug 2019
EquipmentThis Preliminary information communicates the normal operation of the CJ2 automatic HVAC system
PI1394A
Aug 2016
EngineTHIS INFORMATIONAL BULLETIN PROVIDES ADDITIONAL INFORMATION ON HOW TO INSTALL PISTONS AND SUGGEST WHAT TOOLS TO USE.
16NA260
Aug 2016
EquipmentTHIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO CALIBRATION CONCERNS.
000601012F
Aug 2016
EngineTHIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES.
PIT5485B
Apr 2016
EquipmentTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE, TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE.
PIC5088F
Apr 2016
EquipmentTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR THE CONCERN. THE VEHICLE'S XM RADIO ONLY HAS XM PREVEIW CHANNELS.
PIC-5050-A
Apr 2016
Electrical SystemTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON REPAIRING THE CONCERN. A CUSTOMER MAY IDENTIFY A CONCERN OF UNABLE TO REACTIVATE A VEHICLE'S ONSTAR THAT HAS BEEN PREVIOUSLY DISABLED BY ONSTAR.
PIC-4935-E
Apr 2016
Electrical SystemTHIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE.
PIC4935E
Apr 2016
Electrical SystemTHIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO HELP THE DEALERSHIP TECHNICIANS PERFORM A PARASITIC DRAIN TEST FOR THE ONSTAR MODULE.
PIC5050A
Apr 2016
EquipmentTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THE STEPS ON REPAIRING THE CONCERN. A CUSTOMER MAY IDENTIFY A CONCERN OF UNABLE TO REACTIVATE A VEHICLE'S ONSTAR THAT HAS BEEN PREVIOUSLY DISABLED BY ONSTAR.
PIT5389A
Apr 2016
EquipmentTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS FOR DIAGNOSING THE CONCERN. THE VEHICLE MAY BE UNABLE TO CONNECT TO ONSTAR USING THE WHITE, BLUE OR RED ONSTAR BUTTONS.
PIT5485A
Apr 2016
Electrical SystemTHIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN, IF UNABLE TO PLACE AN ONSTAR CALL IN THE IGNITION ON MODE AFTER THE ONSTAR CANADA UPGRADE TO CONTACT THE GM TECHNICAL ASSISTANCE CENTER ONSTAR GROUP FOR FURTHER ASSISTANCE.
GCUS-9-1522
Jan 2016
Fuel System14423C - SPECIAL COVERAGE (REVISED SERVICE PROCEDURE). A FUEL TANK INLET CHECK VALVE (ICV) COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL.
GCUS-9-1493
Jan 2016
Fuel System14423B - SPECIAL COVERAGE (REVISED PART INFORMATION AND SERVICE PROCEDURE). A FUEL TANK INLET CHECK VALVE (ICV) COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL.
14423B
Jan 2016
Fuel SystemSpecial Coverage Adjustment ? Fuel Tank Inlet Check Valve Fracture
14423C
Jan 2016
Fuel SystemSpecial Coverage Adjustment ? Fuel Tank Inlet Check Valve Fracture
14423A
Dec 2015
Fuel System14423A - SPECIAL COVERAGE (REVISED PART INFORMATION). SOME 2004 MODEL YEAR BUICK RAINIER, 2003-2004 MODEL YEAR CHEVROLET SSR, 2002-2004 MODEL YEAR CHEVROLET TRAILBLAZER, CHEVROLET TRAILBLAZER EXT, GMC ENVOY, GMC ENVOY XL, AND OLDSMOBILE BRAVADA, AND 2004 MODEL YEAR GMC ENVOY XUV...
15-NA-079
Dec 2015
CommunicationOnStar Voice Fallback Number Update
14423
Nov 2015
Equipment14423 - SPECIAL COVERAGE. SOME VEHICLES CONTAIN A FUEL TANK INLET CHECK VALVE (ICV) THAT COULD FRACTURE. THE ICV IS LOCATED ABOVE THE FULL FUEL LEVEL.
PIT3271G
Jan 2015
EquipmentTHIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT CHANGING THE TIRE AND WHEEL SIZE ON VEHICLES.

Showing 60 of 89 distinct bulletins on file for this vehicle.

Before you buy this vehicle

A test-drive checklist generated from this vehicle's own complaint and recall record.

  1. Smell for fuel and watch the first restart when hot.Hard starting when warm, hesitation under load, or any fuel odor near the tank or engine bay match this vehicle's fuel-system cluster. Check the recall table for fuel pump campaigns.
  2. Drive it from a dead stop, twice, on a hill if you can.Shudder, hesitation, or a lurch under light throttle is how this vehicle's largest complaint cluster shows itself. Then ask for the transmission service history in writing; repeat repairs are a pattern, not a fluke.
  3. Cold-start it yourself and listen for the first thirty seconds.Knocking, ticking that fades as it warms, or blue or white smoke on startup are the sounds of this vehicle's engine cluster. Check the oil level and the coolant color, and ask whether the engine or its head gaskets have ever been out.
  4. Run the VIN against open recalls before you negotiate.This vehicle has 3 recall campaigns on file. An open recall needs VIN-specific confirmation. Many are quick, no-charge fixes and worth negotiating over; an unresolved do-not-drive advisory, or a remedy the manufacturer has not yet made available, should stop the purchase until it is resolved.
  5. Ask for the service history in writing, then read it against this page.The complaint families above are where owners of this vehicle report trouble. Repairs in exactly those systems are evidence the car had the problem; no such repairs could mean it never developed it, or that it was never fixed. The test-drive items above are how you tell those apart.

Parts search directory

The generic parts list for this vehicle has its own page: a search launcher for every system, filtered by fuel type and era but not by engine, trim, or brake type. It is not a diagnosis and not a fitment guarantee.

Open the parts directory for this Chevrolet Trailblazer Ext →