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Service bulletins for the 2012 Chevrolet Express

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1796 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
06-00-89-031C2017-12-22. Service bulletin. POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information to dealership personnel on proper engine and automatic transmission/transaxle identification.
030729004I2017-12-22. Service bulletin. POWER TRAIN. This informational bulletin was created for the Manual Transmission Operating Characteristics. The different noises caused by driver habit, weather conditions , and normal manual transmission noises.
1203100022017-12-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This informational bulletin provides a description of the proper wheel installation and proper wheel torque techniques used to install wheels onto vehicles
09-07-30-018C2017-10-12. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. This warranty administration bulletin provides information on the change in automatic transmission add conditions documentation and claim submissions
16-NA-3382017-08-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Bulletin provides guidelines for Dealers required to contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.
PIT54422017-08-15. Service bulletin. POWER TRAIN; EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician of an engine power reduced message on the driver information center after performing the Canada Onstar® 4G upgrade. If the concern is present park the vehicle outside and call General Motors Technical Assistance Center.
PI1344A2017-08-15. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. This preliminary bulletin provides a procedure to remove and inspect the clutch select solenoid valve for damage, located in the valve body to correct the customers concern of reduced acceleration at low speeds and trans slip at lauch.
06-00-89-026L2017-08-15. Service bulletin. SERVICE BRAKES; EQUIPMENT:ELECTRICAL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER; POWER TRAIN:AXLE ASSEMBLY; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This warranty administration bulletin provide policy information on a revised customer concern not duplicated/verified labor operation numbers and how to submit CCND.
PIP3119N2017-08-15. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; POWER TRAIN. 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 hour of engine run time to allow break-in of the catalytic converter. Technician will need to use a Tech2 to check the verify engine run time on the Engine Hour Meter in the Instrument Panel Cluster Data Display/Data 1 List in the scan tool match. If the engine run time is less than one hour, the battery may have been disconnected, or another vehicle power loss event may have occurred, during vehicle manufacturing. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle. If the catalytic converter was replaced and the Diagnostic Trouble Codes set it may be a result of the engine run time restrictions no longer being in place since the vehicle is no longer new. Technician will need to clear the Diagnostic Trouble Codes and perform a drive cycle.
PIP4112M2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
PIP4112L2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressively applying the throttle, or after making a hard stop followed by an aggressive throttle. This is considered normal operation of the vehicle the throttle is delayed and opened slowly up to .7 seconds to help minimize driveline lash and clunking or will have approximately .5 seconds of zero torque to allow the transmission to shift to first gear.
PIP5068A2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. 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.
PIP51022017-08-15. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT. 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.
PIP5065D2017-08-15. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. 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.
PIP5065C2017-08-15. Service bulletin. POWER TRAIN. 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.
PIP4828A2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a rough idle and/or momentary lack of power after cold starting the engine and immediately placing the transmission in gear. Technician should follow published Service Information diagnostics first. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.
PIP4138L2017-08-15. Service bulletin. EQUIPMENT:MECHANICAL; POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.
PIP5065B2017-08-15. Service bulletin. POWER TRAIN. 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 replace the Reaction Carrier and the Low and Reverse Roller Clutch.
PIP5009G2017-08-15. Service bulletin. ELECTRICAL SYSTEM:WIRING; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. 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.
PIP50712017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. 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.
PIP50682017-08-15. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; POWER TRAIN. 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.
PIP5009F2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION. 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.
PIP5065A2017-08-15. Service bulletin. EQUIPMENT:MECHANICAL; POWER TRAIN:AUTOMATIC TRANSMISSION. 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 replace the Reaction Carrier and the Low and Reverse Roller Clutch.
PIP50652017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 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 replace the Reaction Carrier and the Low and Reverse Roller Clutch.
PIT5206C2017-08-15. Service bulletin. SERVICE BRAKES; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES. This Preliminary Information communication provides information to the technician with the steps on diagnosing and repairing vehicles that may have unwanted grade braking, reduced engine power with no Driver Information Center messages ? Brake Pedal Override Feature ?, transmission busy or frequent shifting up or down, and Diagnostic Trouble Codes P057B, P057C, and/or P057D may or may not be set. Technician will use this preliminary information to find the brake pedal position data parameters in the scan tool, and also to provide some additional diagnostic help. These issues may be caused by an incorrect brake pedal position sensor input to the engine control module. Technician will verify with the scan tool if the engine control module has the correct parameters for the brake pedal position sensor. If an engine control module brake pedal position sensor relearn is performed, the truck may be temporarily repaired until the intermittent wiring issue between the engine control module and brake pedal position sensor occurs again. On 2014 and newer trucks inspect and repair any damage to X115 and X119. On the 2014 and previous trucks inspect and repair any damage to X205.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.