2003 Chevrolet Sonoma

GENERAL MOTORS IS CONDUCTING A SPECIAL POLICY PROGRAM FOR 903,464 OWNERS OF 2000 - 2003 MODEL S/T VEHICLES THROUGH WHICH OWNERS MAY, AT THEIR OPTION, EITHER (1) PERIODICALLY INSPECT THE TAILGATE SUPPORT CABLES INSTALLED IN THEIR VEHICLE AND HAVE THE CABLES REPLACED IF THE CABLE COATING EXHIBITS ANY INDICATIONS OF DAMAGE OR DETERIORATION OR (2) REQUEST THAT THE TAILGATE SUPPORT CABLES BE REPLACED FREE OF CHARGE. GM WILL HONOR ALL REQUESTS BY OWNERS WHO OPT FOR REPLACEMENT WITHOUT QUESTION REGARDLESS OF THE CONDITION OR APPEARANCE OF THE CABLES. GM HAS AGREED TO MAIL REMINDER NOTIFICATIONS TO OWNERS EVERY TWO YEARS UNTIL THE TAILGATE SUPPORT CABLES HAVE BEEN REPLACED OR UNTIL THE VEHICLE IS 12 YEARS OLD.ODI'S INVESTIGATION INDICATES THAT A SIGNIFICANT MAJORITY OF THE REPORTED COMPLAINTS (87%) AND INJURIES (94%) HAVE OCCURRED IN MY 2000 - 2003 S/T VEHICLES.

ODI IS UPGRADING RQ04-012 AND OPENING AN EA TO INVESTIGATE THE TAILGATE SUPPORT CABLES INSTALLED IN 1998 - 2004 MODEL YEAR SONOMA AND S10 MODEL VEHICLES.GENERAL MOTORS IS CONDUCTING RECALL CAMPAIGN 04V-129 TO REPLACE THE TAILGATE SUPPORT CABLES ORIGINALLY INSTALLED IN CERTAIN MODEL YEAR 2000-2004 SIERRAS AND SILVERADOS AND CERTAIN MODEL YEAR 2002-2004 AVALANCHES AND ESCALADE EXTS (C/K MODELS).GENERAL MOTORS HAS ADVISED ODITHAT THE TAILGATE SUPPORT CABLES INSTALLED IN THE SUBJECT VEHICLES WERE FABRICATED USING IDENTICAL OR SIMILAR SHEATHING MATERIAL AS THE RECALLED VEHICLES.HOWEVER,GENERAL MOTORS HAS ADVISED ODI THAT SONOMA AND S-10 VEHICLES DIFFER FROM C/K MODELS IN SEVERAL WAYS: THE VEHICLE HEIGHT IS LOWER; THE TAILGATE DISPLACEMENT (DROP) WHEN NOT SUPPORTED BY THE CABLES IS SMALLER AND THE TAILGATE COMES TO REST AT A LESS SEVERE TIP ANGLE WHEN NOT SUPPORTED BY THE CABLES; THE TAILGATE MASS IS SMALLER; AND THE SIZE, PAYLOAD, AND USAGE CHARACTERISTCIS ARE LESS DEMANDING THAN C/K MODEL VEHICLES.GM ALSO STATED THAT SONOMA AND S-10 WARRANTY CLAIM INFORMATION INDICATES A LOWER CLAIM COUNT AND A LOWER CLAIM RATE THAN RECALLED C/K MODELS.NOTWITHSTANDING THE ABOVE INFORMATION, ODI HAS RECEIVED AN ADDITIONAL 73 NON-INJURY COMPLAINTS AND 10 INJURY COMPLAINTS ON THE SUBJECT VEHICLES DURING RQ04-012 (SINCE NOVEMBER 2004 TO DATE), WHICH JUSTIFIES OPENING AN ENGINEERING ANALYSIS TO FURTHER INVESTIGATE THIS ISSUE.

CONSUMER STATES DEALER HAS THREE TIMES CHANGED THE MODULE SENSOR FOR AUTOMATIC TRANSMISSION. DEALER STATED, WILL BUY BACK THE VEHICLE. *AK

NHTSA ID

10031403

Incident

Jul 29, 2003

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 for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

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 modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

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 dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.

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 be used to reduce carbon build-up.

This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.