2003 Chevrolet Blazer 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.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- LS Sport Utility 2-Door
- ZR2 Sport Utility 2-Door
- Xtreme Sport Utility 2-Door
- LS Sport Utility 4-Door
Engines covered
- 4.3L 262Cu. In. V6 GAS OHV 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
CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, "OCCUPANT CRASH PROTECTION."
SOME OF THESE VEHICLES INCLUDE INCORRECT STATEMENTS ON ONE OF THE AIR BAG WARNING LABELS.
OWNERS WILL BE PROVIDED WITH CORRECT LABELS AND INSTALLATION INSTRUCTIONS. OWNER NOTIFICA
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
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
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
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
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
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 fo
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
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
Showing the 8 most recent of 200 technical service bulletins on file with NHTSA.
I WAS TRAVELING SOUTHBOUND WHEN I EXPERIENCED A SEIZURE AND LOST CONTROL OF MY VEHICLE. I PROCEEDED TO VEER TO THE LEFT WHERE I CLIPPED SEVERAL CARS THAT WERE HEADED NORTHBOUND AND
DT*: THE CONTACT STATED THAT BOTH FRONT AIRBAGS OF THE VEHICLE DID NOT DEPLOY DURING A CRASH WHICH OCCURRED WHILE TRAVELING 45 MPH. THE VEHICLE WAS HEADED EAST ON A NARROW, ROUGH,
REAR ENDED A STOPPED PICK UP AT 45 MPH AND AIR BAGS DID NOT DEPLOY. IT WAS ON A HIGHWAY WHERE THE SPEED LIMIT IS 55. THE WHOLE FRONT END WAS DAMAGED BUT MOST WAS ON DRIVER SIDE.
TAKATA INFLATORS: I HAD LEFT MY HOUSE HEADED TO WORK AT APPROXIMATELY 6:30 AM AND GOT ON I40 EASTBOUND, IT HAD SNOWED THE DAY BEFORE AND THE ROADS HAD BEEN TREATED AND WERE CLEAR F
Showing the 4 most serious of 103 complaints filed with NHTSA.
