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Service bulletins for the 2012 Chevrolet Silverado

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.

2256 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIP3161F2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician about vehicles with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.
PIP4158F2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.
PIT52142017-08-15. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.
PIT52152017-08-15. Service bulletin. SEATS. This Preliminary Information communication provides information to the technician about vehicles that after installing the GM Accessory Heated Seat Kit, one or more of the following issues may be present the heated seat back and/or bottom turns off after approximately 30 seconds and after turning on the heated seat switch, the indicators remain on, but the seat is not heating. Technician may find Diagnostic Trouble Codes B1935 Sym 0E, B2180 Sym 0E, B2425 Sym 0D, and/or B2430 Sym 0D. Technician will need to inspect the accessory heated seat wiring harness and make sure the heater element connectors are installed correctly.
PIP4798G2017-08-15. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician that the Duramax Diesel Engine Control Module Part numbers 12648344 and 12654088 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.
PIT5074G2017-08-15. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking tension or probing the .64 series terminals. The test probe terminal has been released in the terminal repair kit (J-38125-620H) located in Lear Tray 7 part number 963716-2. There are 5 terminated leads in a package part number is 13505346, which can be ordered through your normal General Motors Customer Care and Aftersales parts channel.
PIP51192017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that may have Diagnostic Trouble Codes P0088 and P128E sets after a fuel system or engine repair. Technician will inspect for the Fuel Rail Pressure 1 and 2 connectors being swapped.
PIP4560N2017-08-15. Service bulletin. POWER TRAIN. This Preliminary Information communication advises the technician that Allison Transmission Control Module part number 24256861 will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIT4720C2017-08-15. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Preliminary Information communication provides information to the technician that after replacing the Instrument Panel Cluster the exchange center is unable to program the actual mileage on the odometer or the actual mileage is unknown. Dealer will need to follow dealer to the General Motors service policies and procedures manual section 3.2.4 odometer servicing.
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.
PIP4793G2017-08-15. Service bulletin. EQUIPMENT:MECHANICAL; ENGINE AND ENGINE COOLING. This Preliminary Information communication advises the technician that the Allison A1000 Valve Body part number 29545998 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.
PIP5021B2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication advises the technician that the Allison 6 Speed Automatic Transmission Assembly 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.
PIP4560P2017-08-15. Service bulletin. EQUIPMENT:ELECTRICAL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication advises the technician that the Allison Transmission Control Module will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIT4417H2017-08-15. Service bulletin. VISIBILITY; VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. This Preliminary Information communication provides information to the technician about an owner that may request to have a different style mirror installed on their vehicle or request a different mirror before they purchase the vehicle. Swapping mirrors on vehicles equipped with Side Blind Zone Alert, Regular Production Option Code UFT, is not recommended. On other vehicles tech will need to verify if the vehicle is equipped with door modules or not. On vehicles with door modules technician will need to contact Techline Customer Support for new calibrations for both doors. On vehicles not equipped with door modules no calibrations are needed.
PIP5108A2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have an audible engine whine noise at 1500-1800 revolutions per minute. Technician will need to check the coolant level, remove serpentine belt to verify noise goes away, rotate the thermostat 90 degrees and retest, then replace thermostat and retest. Technician will replace the water pump if there is no change.
PIP3119L2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. 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.
PIP5113A2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication provides information to the technician about vehicles that during the first few launches after a key cycle, they experience a delayed 1-2 upshift. Technician can update the Transmission Control Module with the latest calibration is available through TIS2Web.
PIP4158G2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have low oil pressure, no oil pressure, and/or engine noise. Technician will need to replace the oil pump, flush the oil cooler lines.
PIT4551F2017-08-15. Service bulletin. ELECTRICAL SYSTEM:WIRING. This Preliminary Information communication provides information to the technician that during the Pre-Delivery Inspection it may be noticed that the backup alarm is inoperative. Technician can locate the wire harness on the right rear of the frame. Technician can route the harness up and over the spare tire hoist tube and connect to the backup alarm.
PIP51132017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that during the first few launches after a key cycle, they experience a delayed 1-2 upshift or a sluggish launch with high engine speed. Technician will need to update the Transmission Control Module with the latest calibration is available through TIS2Web.
PIP5021A2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary Information communication advises the technician that the Allison 6 Speed Automatic Transmission Assembly part numbers 24257850, 24242411, 24258552, 24258551, 24257851, 24242413, 24258554, and 24258553 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.
PIT4657F2017-08-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about the Multiple Diagnostic Interface or Techline computer terminal locks up during Service Programming System Sequential Programming or failed Service Programming System Sequential Programming event or no communication with any one Hybrid module. Technician will need to contact Techline customer support center for further assistance.
PIT52082017-08-15. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that after refueling the fuel gauge will show empty. Technician will find Diagnostic Trouble Code P2636. Dealer should question the owner if the key or engine is on while refueling. Dealer should the owner to turn the engine and key off, before refueling the vehicle.
PIP5110A2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 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.
PIP5012C2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication provides information to the technician about vehicles that have a clunk noise or a harsh 6-5 downshift while driving at 50 to 70 miles per hour. Technician will reprogrammed the Transmission Control Module and a FastLearn procedure will need to be performed to correct the condition.

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