2012 Chevrolet Express Technical Service Bulletins

1,783 technical service bulletins (TSBs) are on record for the 2012 Chevrolet Express. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10126197Nov 13, 2012Equipment. This informational bulletin provides information for requesting a new key code for customers with lost or stolen keys
• 10126196Nov 13, 2012Equipment. This informational bulletin provides information and rules for GM keycode look up applicationa dn the key code security rules and regulations for Canada only.
• 10112566Nov 13, 2012Electrical system, Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that the Malfunction Indicator Lamp is illuminated and the vehicle has a harsh 1-2 shift. Technician may find Diagnostic Trouble Code P0741 set in the Transmission Control Module. Technician will need to replace the torque converter clutch solenoid and wire harness with part number 24237980.
• 10138200Nov 12, 2012Body and structure, Equipment, Electrical system. This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.
• 10138197Nov 12, 2012Brakes, Engine, Transmission and drivetrain, Equipment. This informational bulletin provides a revision for 01-00-89-010I to add the 2013 model year.
• 10137457Nov 12, 2012Equipment. This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.
• 10137454Nov 12, 2012Equipment. This informational bulletin provides a revision for 01-00-89-010I to add the 2013 model year.
• 10126200Nov 12, 2012Equipment. This informational bulletin provides a single point reference and strategy document to aid in reducing customer comebacks, and the possibility of buyback situations by outlining specific guidelines, strategy and forms that will assist with this goal, by identifying, clarifying and documenting customer concerns accurately at each service visit.
• 10126198Nov 12, 2012Equipment. This informational bulletin provides a list of newly released PI and Bulletins in regards to recent released vehicles so that vehicles can be fixed right the first time in for service.
• 10138196Nov 9, 2012Equipment, Electrical system. This informational bulletin provides information on part restriction and ordering process information for onstar vehicle communication interface modules.
• 10137453Nov 9, 2012Electrical system, Other or unknown, Equipment. This informational bulletin provides information on part restriction and ordering process information for onstar vehicle communication interface modules.
• 10126201Nov 9, 2012Electrical system. This informational bulletin provides information on part restriction and ordering process information for onstar vehicle communication interface modules.
• 10112560Nov 9, 2012Brakes. This Preliminary Information communication provides information to the technician about brake rotors on new vehicles and replacement parts from General Motors Service Parts Operations. Technician should be advised the costing should not be removed from the brake rotor it will wear off with normal brake usage. Dealer should communicate to the customer this condition is a normal operating characteristic of their…
• 10138192Nov 8, 2012Equipment, Engine, Transmission and drivetrain, Electrical system. This technical bulletin provides a procedure for replacing the throttle position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and DTC P2135 set.
• 10138191Nov 8, 2012Equipment, Visibility (wipers, defrost, mirrors). This warranty administration bulletin provides information on what should be considerd warranty damage or damage that was at fault of the cutomer and how to properly claim them on the warranty paperwork
• 10137449Nov 8, 2012Engine cooling. This technical bulletin provides a procedure for replacing the throttle position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and DTC P2135 set.
• 10137448Nov 8, 2012Equipment. This warranty administration bulletin provides information on what should be considerd warranty damage or damage that was at fault of the cutomer and how to properly claim them on the warranty paperwork
• 10126203Nov 8, 2012Equipment. This warranty administration bulletin provides information on what should be considerd warranty damage or damage that was at fault of the cutomer and how to properly claim them on the warranty paperwork
• 10112558Nov 8, 2012Electrical system. This Preliminary Information communication provides information to the technician with additional vehicle speed sensor diagnostic information. Technician may encounter multiple issues when diagnosing a Vehicle Speed Sensor. Technician will find it difficult to follow the speed signal path between the components. To test connect the Fluke meter leads between circuits 821 and 822 and set the meter to Alternating…
• 10112546Nov 6, 2012Brakes. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
• 10112539Nov 5, 2012Engine cooling. This Preliminary Information communication provides information to the technician about vehicles with Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0101. Technician should follow published Service Information diagnostics for any Diagnostic Trouble Codes that are set.
• 10245761Nov 1, 2012Equipment, Electrical system. Requesting a New Key Code for Customer with Lost or Stolen Keys
• 10112532Nov 1, 2012Body and structure. This Preliminary Information communication provides information to the technician about vehicles that have a click, clunk, pop type noise coming from the front end. Technician will need to align the bumper.
• 10112531Nov 1, 2012Brakes. This Preliminary Information communication provides information to the technician about hairline cracks may be noticed in the pad friction material, when performing a brake inspection. Technician should be advised that the hairline cracks do not affect the operation of the brake system and the pads should not be replaced if only hairline cracks are found.
• 10112529Nov 1, 2012Equipment. This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down, remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle.
• 10112528Nov 1, 2012Electrical system. This Preliminary Information communication provides information to the technician about vehicles that during battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the OnStar system. Technician should understand the power cycles of the various OnStar systems. All Generation 6, 7, 8, and 9 systems are powered up continuously for 48 hours from ignition…
• 10071325Nov 1, 2012Engine cooling. Summary to be provided on a future date.
• 10112520Oct 29, 2012Equipment, Engine cooling. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on shortly after cold start. Technician will find a Diagnostic Trouble Code P2181 in the Engine Control Module. Technician will need to inspect the rear heater pipes shown below for proper installation.
• 10118658Oct 24, 2012Fuel system. This preliminary informational bulletin provides Information for Diesel Particulate Filter (DPF) Service Regeneration Documentation.
• 10085115Oct 24, 2012Electrical system, Engine. This preliminary informational bulletin provides a procedure to perform an air leak inspection to correct a customer concern on an illuminated malfunction indicator lamp (mil), and a reduced engine power message displayed due to the engine control module (ecm) detecting that the diesel particulate filter (dpf) has accumulated 70 grams or more of soot.
• 10112515Oct 23, 2012Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicle that has a squawk or grunt type noise when shifting from 2nd to 3rd gear. Technician should replace the 3-4 clutch Friction and Steel Clutch Plates along with the Apply Plate and Selective Backing Plate.
• 10112505Oct 22, 2012Brakes, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have a Antilock Braking System Malfunction Indicator Lamp on and or the service Stability message on. Technician may find Diagnostic Trouble Code C0045 and or C0050 found in the Electronic Brake Control Module. Technician will need to inspect the wires/crimps/terminals at the suspect Wheel Speed Sensor connector.
• 10112494Oct 18, 2012Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts. Technician can check Service Information for some accessories. Technician can also contact Partech for assistance.
• 10118643Oct 16, 2012Equipment. This preliminary informational bulletin provides a list of corrections for multiple concerns regarding Unexpected Loss of Radio Audio (Radio Goes Silent/No Sound) and Other Blackberry Phone - Bluetooth Issues
• 10084191Oct 16, 2012Equipment, Electrical system. This preliminary informational bulletin provides a list of corrections for multiple concerns regarding unexpected loss of radio audio (radio goes silent/no sound) and other blackberry phone - bluetooth issues
• 10118640Oct 15, 2012Fuel system, Engine cooling. This informational bulletin provides information for Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines - Photograph Tech 2 Calibration IDs, Calibration Verification Numbers (CVNs) and Transmission Data Screen
• 10118639Oct 15, 2012Engine cooling. This informational bulletin provides Information on Identifying Duramax Diesel Overpower Engine Breakdown/Non-Function Due to Aftermarket Power-Up Devices vs Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components, DTC P003A or P111D Set
• 10118638Oct 15, 2012Engine cooling. This informational bulletin provides information on Identifying Non-GM (Aftermarket) Engine Calibrations for Gasoline Engines Using Tech 2 or GDS 2
• 10118637Oct 15, 2012Equipment. This informational bulletin provides information on dealer responsibility for cargo carrying capacity labeling and the part numbers for the labels.
• 10118635Oct 15, 2012Visibility (wipers, defrost, mirrors). This preliminary informational bulletin provides a procedure for relearning the power folding mirriors and road testin to verify they correct a condtion of the power folding mirriors glass shakes, flutters at normal driving conditions.
• 10118634Oct 15, 2012Transmission and drivetrain. This warranty administration bulletin provides information on the change in automatic transmission add conditions documentation and claim submissions
• 10112477Oct 15, 2012Transmission and drivetrain, Body and structure. This Preliminary Information communication provides information to the technician abut vehicles that have a knock noise or vibration from the engine or transmission. Technician will need to inspect the flex plate. The flex plate and transmission bell housing should be replaced if the flex plate is found cracked.
• 10085128Oct 15, 2012Engine. This informational bulletin provides information for identifying non-gm ecm calibration use and power-up hardware detection in duramax diesel engines - photograph tech 2 calibration ids, calibration verification numbers (cvns) and transmission data screen
• 10084683Oct 15, 2012Equipment, Body and structure, Visibility (wipers, defrost, mirrors). This preliminary informational bulletin provides a procedure for relearning the power folding mirriors and road testin to verify they correct a condtion of the power folding mirriors glass shakes, flutters at normal driving conditions.
• 10112469Oct 12, 2012Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that the Malfunction Indicator Lamp is illuminated and the vehicle has a harsh 1-2 shift. Technician may find Diagnostic Trouble Code P0741 set in the Transmission Control Module. Technician will need to replace the torque converter clutch solenoid and wire harness with part number 24237980.
• 10112468Oct 12, 2012Visibility (wipers, defrost, mirrors). This Preliminary Information communication provides information to the technician about the percentage of Ultraviolet protection or tint offered by the windshield or side glass. Technician should be advised Windshield reduces Ultraviolet rays down to 4% or less. Front side door glass reduces Ultraviolet rays down to 35% or less. Windshields are SOLAR glass with a light transmittance of >/=70%. Front door glass are…
• 10118630Oct 11, 2012Body and structure. This preliminary informational bulletin provides a procedure on how to clean overspray from chorme bumpers for concerns related to an apperance of discoloration or corrosion near edges/openings of chrome bumpers
• 10112465Oct 11, 2012Equipment. This Preliminary Information communication provides information to the technician about vehicles that have a message on the radio "maximum number of phones are currently paired to the vehicle". Dealer should advise the customer this is normal operation of the vehicle due to the maximum number of five phones can be paired to a vehicle.
• 10084685Oct 11, 2012Equipment, Body and structure. This preliminary informational bulletin provides a procedure on how to clean overspray from chorme bumpers for concerns related to an apperance of discoloration or corrosion near edges/openings of chrome bumpers
• 10118626Oct 10, 2012Equipment. This warranty administrational bulletin provides information on Clarification of Use - Dealer Empowerment Labor Operations and Customer Enthusiasm

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