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2003 Chevrolet Trailblazer EXT Service and Repair Manual
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$29.99 USD
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Covers all 2003 Trailblazer EXT trims — SS Sport Utility 4-Door, LT Sport Utility 4-Door ·
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Complete repair procedures
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$29.99
2003 Chevrolet Trailblazer EXT Service and Repair Manual
Regular price
$29.99 USD
Unit price
Regular price
$29.99 USD
Unit price
This factory service and repair manual for the 2003 Chevrolet Trailblazer EXT lists two engines and two trims: the 6.0L OHV V8 of 364 cubic inches and the 4.2L DOHC inline-six of 256, both naturally aspirated and gasoline-fueled, in LT or SS form on the four-door sport utility body. A pushrod V8 and a twin-cam six need different procedures at almost every step of engine work, from timing to torque sequence to diagnostic specification, and this manual gives each its own sections instead of a shared summary.
Engines covered
- 6.0L V8 (364 cu in) — OHV, naturally aspirated, gasoline
- 4.2L inline-six (256 cu in) — DOHC, naturally aspirated, gasoline
Body styles covered
- 4-door sport utility
Trims covered
- LT
- SS
Known issues on the 2003 Trailblazer EXT. The federal record holds three recalls for this year. Corrosion from road splash and salt can seize a rear side door latch so it will not latch or unlatch, letting a door open in motion. Heat and vibration can loosen a tail lamp and stop lamp bulb until it flickers out, taking the brake or turn signal with it. Water in the wiper modules can short or corrode them, so the wipers refuse to run or refuse to stop. Complaints reach 1,255, led by 334 on the electrical system and 202 on the fuel system.
CERTAIN 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. THESE VEHICLES WER
Consequence
IF THE DOOR IS NOT LATCHED PROPERLY AND IT GOES UNNOTICED, IT MAY OPEN WHILE THE VEHICLE I
Remedy
DEALERS WILL INSTALL A SEAL ALONG THE LOWER PART OF THE ROCKER PANEL TO PREVENT INTRUSION
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
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.
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 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
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
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
This 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.
This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
Showing the 8 most recent of 105 technical service bulletins on file with NHTSA.
WE WERE INVOLVED IN AN AUTOMOBILE ACCIDENT WHILE DRIVING A 2003 TRAILBLAZER XT. A DRIVER TURNED IN FRONT OF US AT AN INTERSECTION ON A BUSY HIGHWAY WHILE WE HAD A GREEN LIGHT. I
IT WAS SLEETING AND I LOST CONTROL ON A CURVE. I HAD BEEN DRIVING ABOUT 50 MPH, BUT BRAKE BEFORE THE CURVE AND BRAKE VERY HARD WHEN I TRIED TO REGAIN CONTROL OF THE VEHICLE, AS IT
DT*: THE CONTACT STATED WHILE TRAVELING 75 MPH THE VEHICLE SWERVED TO THE RIGHT AND THEN OVER CORRECTED. THE VEHICLE WENT INTO A DITCH, THEN FLIPPED SEVERAL TIMES HOWEVER, THE AI
DRIVERS SEAT WILL MOVE TO THE "EXIT POSISTION" WHILE DRIVING. THE LAST TIME THIS HAPPENED THE DRIVER WAS PULLED AWAY FROM THE BRAKE PEDAL WHILE MAKING A RIGHT HAND TURN AND DROVE O
Showing the 4 most serious of 406 complaints filed with NHTSA.