2002 Chevrolet Trailblazer Service and Repair Manual

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Factory-Grade Data

2002 Chevrolet Trailblazer service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • LTZ Sport Utility 4-Door
  • LS Sport Utility 4-Door
  • North Face Sport Utility 4-Door
  • LT Sport Utility 4-Door

Engines covered

  • 4.2L 256Cu. In. l6 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Payment methods

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  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

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Vehicle Safety Data

2002 Chevrolet Trailblazer Recalls & Complaints

NHTSA #04V20100028/04/2004Component: SEAT BELTS

CERTAIN LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, "SEAT BELT ASSEMBLIES." ONE OF THE TWO SENSORS IN THE

Consequence

IF THIS WERE TO OCCUR, THE SAFETY BELT MAY NOT RESTRAIN THE OCCUPANT AS INTENDED DURING A

Remedy

DEALERS WILL INSPECT THE DRIVER AND FRONT PASSENGER SAFETY BELT RETRACTORS, AND REPLACE TH

NHTSA #03V09600019/03/2003Component: ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARDS NO. 101, "CONTROL LOCATION, IDENTIFICATION, AND ILLUMINATION" AND NO.

Consequence

THESE VEHICLES DO NOT COMPLY WITH THE STANDARD.

Remedy

DEALERS WILL REPROGRAM THE INSTRUMENT PANEL CLUSTER. OWNER NOTIFICATION BEGAN MAY 29, 20

NHTSA #03V25000015/07/2003Component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." T

Consequence

THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.

Remedy

OWNERS WILL BE PROVIDED WITH A SUPPLEMENT FOR THEIR OWNER'S MANUAL. THIS SUPPLEMENT DESCR

NHTSA #03V07500006/03/2003Component: POWER TRAIN:AUTOMATIC TRANSMISSION

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 114, "THEFT PROTECTION." THESE VEHICLES ARE EQUIPPED WITH A MECHAN

Consequence

THESE OVERRIDES ARE NOT PERMITTED UNLESS THE VEHICLE HAS A LOCKING STEERING COLUMN.

Remedy

DEALERS WILL ELIMINATE THESE CONDITIONS BY DISABLING THE OVERRIDES. OWNER NOTIFICATION BE

NHTSA #01V28300005/09/2001Component: POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES (4 WHEEL-DRIVE). SOME OF THESE VEHICLES WERE BUILT WITH A RANGE SHIFT COLLAR IN THE TRANSMISSION TRANSFER CASE THAT CONTAINS CRACKS.

Consequence

THIS CONDITION COULD RESULT IN A COMPLETE FRACTURE OF THE RANGE SHIFT COLLAR AND SUBSEQUEN

Remedy

DEALERS WILL REPLACE THE TRANSFER CASES AND UPDATE THE CONTROL MODULE CALIBRATION. OWNER

NHTSA #04V04600004/02/2004Component: VISIBILITY:WINDSHIELD WIPER/WASHER

CERTAIN 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

Consequence

DEPENDING ON THE OCCURRENCE AND WEATHER SITUATION, DRIVER VISIBILITY COULD BE REDUCED, WHI

Remedy

DEALERS WILL COVER THE WINDSHIELD WIPER MODULE VENT HOLE WITH A PATCH. ALSO, THE WIPER MO

NHTSA #04V52700001/11/2004Component: EXTERIOR LIGHTING:BRAKE LIGHTS

ON 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 IN

Consequence

AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN

Remedy

DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM.

TSB #11020816

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

TSB #11014455

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the

TSB #11009156

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and

TSB #11007744

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi

TSB #11007743

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi

TSB #11006621

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 mo

TSB #11006421

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 deal

TSB #11004761

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

Showing the 8 most recent of 641 technical service bulletins on file with NHTSA.

20060423Component: UNKNOWN OR OTHERCrash reportedFire reported1 injured2 fatalities

THE ACCIDENT HAPPENED 10/29/2004 AROUND 7:00 PM. MY HUSBAND, WAS TRAVELING ON HIGHWAY 27 NORTH COMING HOME FROM VICKSBURG, MS. THE ACCIDENT REPORT CLAIMED HE LOST CONTROL OF THE 20

20060423Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAPCrash reportedFire reported1 injured2 fatalities

THE ACCIDENT HAPPENED 10/29/2004 AROUND 7:00 PM. MY HUSBAND, WAS TRAVELING ON HIGHWAY 27 NORTH COMING HOME FROM VICKSBURG, MS. THE ACCIDENT REPORT CLAIMED HE LOST CONTROL OF THE 20

20061103Component: AIR BAGS:FRONTALCrash reportedFire reported1 injured

I DRIVE A 2002 CHEVY TRAILBLAZER 4WD AND MY SON WAS DRIVING THE VEHICLE ON HALLOWEEN NIGHT. HE WAS DRIVING THE SPEED LIMIT OF 30 MPH AND SWERVED TO AVOID A POSSUM IN THE ROAD, HE

20151014Component: ENGINECrash reportedFire reported

TL* THE CONTACT OWNED A 2002 CHEVROLET TRAILBLAZER. WHILE DRIVING AT APPROXIMATELY 65 MPH, THERE WAS AN ABNORMAL NOISE AND SMOKE APPEARED FROM THE HOOD. THE VEHICLE SUDDENLY CAUGHT

Showing the 4 most serious of 1573 complaints filed with NHTSA.

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