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.

• 10130652Apr 25, 2013Equipment. This technical bulletin provides Warranty Administration - New Labor Codes information.
• 10112995Apr 22, 2013Engine cooling. This Preliminary Information communication provides information to the technician of additional information while diagnosing a diagnostic trouble code P0420. Check for a possible leak in the exhaust system behind the bank one number 2 oxygen sensor. If a leak is found or there is an aftermarket utility bed or trailer hitch installed. Check for a minimum clearance of 1.5 to 2 inches of the exhaust system.
• 10112988Apr 19, 2013Equipment. This Preliminary Information communication provides information to the technician about vehicles that have at times the XM Traffic or Weather for the local area takes several minutes to update and may read "NO DATA" or "UPDATING" during that time. Technician should be advised that Traffic and Weather data from local reporting stations and then send the updated info process may take up to 24 minutes.
• 10112974Apr 16, 2013Engine cooling. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P0420. Technician will need to follow published Service Information diagnostics. Technician will check for a possible leak in the exhaust system behind the bank 1 sensor 2 O2 sensor. Technician will need to…
• 10130634Apr 15, 2013Equipment. This preliminary information bulletin provides a revision of PI0564B to add models.
• 10130631Apr 15, 2013Equipment. This technical bulletin provides a revision of 03-06-03-003B to add the 2010-2014 model years, update the Attention statement, change the terms Claim Type B to Claim Type ZPTI, GM Dealer to GM Service Agent, Repair Order to Job Card, Warranty Claim to Warranty Transaction, and to update the Procedure Information for submitting Vehicle Repairs from WINS to Global Warranty Management (GWM).
• 10130627Apr 11, 2013Equipment. This technical bulletin provides a revision of 99-04-20-002G to add 2013-2014 model years.
• 10130619Apr 8, 2013Equipment. This technical bulletin provides a revision of 10-00-89-017Z to include updated information.
• 10112955Apr 4, 2013Engine cooling. This Preliminary Information communication provides information to the technician about vehicles that may have a cold engine tick noise for 50 seconds at start up. Technician determines if the tick noise is possibly coming from the exhaust manifold, as this noise could easily be mistaken for an engine tick noise.
• 10130611Apr 3, 2013Equipment. This preliminary information bulletin is for information on COAX Repair Kit Availability. Revised from PI0572A
• 10130610Apr 2, 2013Equipment. This technical bulletin provides a revision of 02-06-01-022M to add the 2013 model year.
• 10254236Apr 1, 2013Body and structure. Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting.
• 10246616Apr 1, 2013Equipment. Car and Truck Fix it Right the First Time Issues
• 10246615Apr 1, 2013Equipment. Car and Truck Fix it Right the First Time Issues
• 10246614Apr 1, 2013Electrical system. Vehicle Software Enhancements
• 10063963Apr 1, 2013Engine. Summary to be provided on a future date.
• 10063214Apr 1, 2013Electrical system. Summary to be provided on a future date.
• 10052297Apr 1, 2013Electrical system. General motors: on some trucks and passenger vehicles, accessory power outlets (apo) and trailer lighting are common accessed electrical systems that are affected by devices that are plugged in and become inoperative due to an open fuse and no problem with vehicle identified. Models years 2010-2014 trucks and passenger. No models.
• 10052205Apr 1, 2013Engine cooling. General motors: service engine soon light illuminated on dash. There may also be increased engine noise, or possible higher rpm shifts, and reduced a/c performance.
• 10134682Mar 27, 2013Electrical system. This technical bulletin provides information on Vehicle Software Enhancements for 2014 and prior GM Passenger Cars and Light Duty Trucks.
• 10134681Mar 26, 2013Equipment. This warranty administration bulletin provide policy information on clarification of use-dealer empowerment labor operations and customer enthusiasm.
• 10134680Mar 26, 2013Electrical system. This informational bulletin provides information accessory power outlet and trailer lighting fuse replacement due to electrical systems that can be affected by devices that are plugged in by the customer.
• 10112937Mar 26, 2013Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that have Diagnostic Trouble Code P0016 stored. Technician will need to inspect the reluctor on the crankshaft. If the reluctor has moved replace the crankshaft.
• 10134676Mar 25, 2013Electrical system, Transmission and drivetrain. This preliminary information bulletin provides information on powertrain and various electronic/electrical control issues.
• 10134675Mar 25, 2013Equipment. This informational bulletin provides information for dealers to properly maintain vehicle in inventory.
• 10112935Mar 25, 2013Electrical system. 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.
• 10134672Mar 22, 2013Seats. This informational bulletin provides information on the proper cleaning products for GM hard or plastic surfaces, seats carpet, vinyl.
• 10134671Mar 22, 2013Electrical system, Transmission and drivetrain, Equipment, Tires. This technical bulletin provides a procedure on aftermarket ALSL or DLC devices causing multiple issues due to suspected tampering.
• 10134662Mar 19, 2013Engine, Transmission and drivetrain. This informational bulletin provides information of suspected tampering or vehicle modifications for non-GM (Aftermarket) engine and transmission calibrations for V6 and V8 gasoline engines Using Tech 2® or global diagnostic system 2 (GDS 2)
• 10112920Mar 19, 2013Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have intermittent Diagnostic Trouble Code P0340. Technician will replace the cam position sensor if the vehicle build is Sept or Oct of 2012 and SI diagnostics does not lead to a resolution.
• 10134652Mar 11, 2013Equipment. This informational bulletin provides information on fix it right for first time issues.
• 10134649Mar 7, 2013Fuel system. This preliminary information bulletin provides a procedure for installing a zip tie for the fuel level sensor to correct the fuel gauge intermittently not reading full when the fuel tank is filled.
• 10112893Mar 5, 2013Equipment. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent Diagnostic Trouble Code P0340. Technician will need to replace the cam position sensor to correct this Diagnostic Trouble Code P0340 concern.
• 10134644Mar 4, 2013Steering. This preliminary information bulletin provides a procedure to eliminate a whine noise that varies with engine speeds.
• 10134643Mar 4, 2013Engine cooling. This preliminary information bulletin provides a procedure to re-align the exhaust pipe and replace the gasket to eliminate an exhaust leak or vibration/rattle noise heard approximately 900 RPM, fuel smell, white smoke, oily substance on the exhaust downpipe.
• 10134640Mar 4, 2013Wheels. This informational bulletin provides information on the appearance of chromed aluminum wheels due to chemical staining, pitting corrosion and/or spotted.
• 10254207Mar 1, 2013Engine cooling, Electrical system. No Crank/No Start, Dead Battery Due to Parasitic Drain/Discharge.
• 10245804Mar 1, 2013Equipment. Aftermarket ALDL or DLC Interface Devices Causing Multiple Issues
• 10063364Mar 1, 2013Transmission and drivetrain. Summary to be provided on a future date.
• 10112887Feb 26, 2013Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that may have a ticking noise when driving above 30 miles per hour in third and fourth gear. Technician will need to replpace the Reaction Carrier, Low and Reverse Roller Clutch Race, and the Low and Reverse Roller Clutch.
• 10112885Feb 26, 2013Equipment. This Preliminary Information communication advises the technician that a noise or a vibration in the vehicle that seems to be abnormal may not have been there when the vehicle was purchased. Technician should look for Non - General Motors aftermarket accessories installed on the vehicle that can cause these issues.
• 10112857Feb 13, 2013Electrical system. This Preliminary Information communication advises the technician that, when testing any circuit for open or resistance, it is imperative that all related terminal pin fit and tension be checked when the test steps require disconnection of the connector or component, prior to any component replacement. Always use the recommended terminal test tool during these tests.
• 10112844Feb 5, 2013Electrical system, Engine, Exterior lighting. This Preliminary Information communication provides information to the technician about vehicles that have Service Engine Soon Malfunction Indicator Lamp and the engine misfires. Technician may find Diagnostic Trouble Codes P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, and P0308. Technician will need to inspect the spark plug wires. Technician will need to replace any loose spark plug wires.
• 10112842Feb 4, 2013Engine, Engine cooling. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a Service Engine Soon Malfunction Indicator Lamp on at low mileage. Technician may find Diagnostic Trouble Codes P0420 and or P0430 stored. Technician should be advised that the catalytic converter efficiency Diagnostic Trouble Codes P0420 and P0430 are disabled for the first…
• 10253144Feb 1, 2013Engine cooling. SES Light Rough Running And/Or Lack Of Power.
• 10245777Feb 1, 2013Electrical system, Engine, Other or unknown. New Service Cam Bearings For Gen IV V8 Engines
• 10112744Jan 29, 2013Engine, Fuel system. This Preliminary Information communication advises the technician that 2013 6.6L Duramax Diesel Engine Regular Production Option Code (LGH and LML) part number 12638502 will be placed on a parts restriction through the General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
• 10133152Jan 28, 2013Equipment. This informational bulletin provides information on the replacement process for the product quality center.
• 10133151Jan 28, 2013Transmission and drivetrain. This informational bulletin provides information for service agents not required to contact product quality center for CNG, LPG or gasoline engine, transmission and/or transfer case.
• 10133149Jan 28, 2013Electrical system. This technical bulletin provides a procedure on suspected tampering due to aftermarket ALDL or DLC interface devices causing multiple issues.

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