2012 Chevrolet Silverado 2500 Technical Service Bulletins

1,726 technical service bulletins (TSBs) are on record for the 2012 Chevrolet Silverado 2500. 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.

• 10111875Mar 24, 2014Engine. This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient temperatures are present. Technician will need to clean the area of the oil leak, clean and dry the PCV hoses, and replace the oil fill cap with part number 12589430.
• 10137866Mar 17, 2014Equipment. This informational bulletin helps the technician quick reference repairs to bulletins as opposed to replacing parts that may be un necessary.
• 10111856Mar 7, 2014Engine. This Preliminary Information communication advises the technician that the 2010 through 2015 6.6L Duramax Diesel Engine Part number 12638502 has been placed on a parts restriction through General Motors Product Quality Center. Dealer will need to contact General Motors Product Quality Center for further assistance.
• 10137852Mar 5, 2014Equipment, Fuel system. This preliminary bulletin provides procedure to correct contact between the fuel temperature sensor connector and the fuel return line for clearance.
• 10111850Mar 5, 2014Equipment. This Preliminary Information communication provides information to the technician about vehicles that when a Canadian customer may comment that when they travel to the United States, they are unable to connect to OnStar or use hands free calling. Dealer can advise the customer that the existing cell phone provider not having roaming agreements in areas outside of Canada.
• 10111849Mar 5, 2014Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that have a frequent "off route" messages while following Turn by Turn route. Technicians will need to remove power from the Vehicle Communication Interface Module for one hour and retest for the concern.
• 10111848Mar 5, 2014Equipment. This Preliminary Information communication provides information to the technician about vehicles that has no XM audio on certain channels but XM channel info is displayed. Technician will need to contact XM and deactivate and activate the module.
• 10111846Mar 4, 2014Electrical system. This Preliminary Information communication provides information to the technician about a customer?s request to install OnStar Bluetooth. Dealer should be advised at this time, there are no provisions to add this option to vehicles that were not built with it.
• 10111845Mar 4, 2014Equipment, Electrical system. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have an OnStar Turn-By-Turn Navigation the system that is inoperative. Technician verifies there are no Diagnostic Trouble Codes are present in the Antilock Braking System and Vehicle Communication Interface Module of the vehicle. If no Diagnostic Trouble Codes found call OnStar using…
• 10067228Mar 4, 2014Transmission and drivetrain. 14043 - customer satisfaction. Certain vehicles, equipped with an allison 6-speed automatic transmission (mw7), may have been built with an incorrect transmission thrust bearing. Over time, this bearing could fail, resulting in noise and poor transmission operation. Dealers are to replace the thrust bearing.
• 10253605Mar 1, 2014Equipment. Poor Voice Quality During Bluetooth Call or OnStar® Personal Call.
• 10247681Mar 1, 2014Equipment. Information On Requests To Add OnStar Bluetooth Option.
• 10246982Mar 1, 2014Electrical system. Checking Smartphone Bluetooth Software Update Status
• 10245950Mar 1, 2014Equipment. Canadian Customers Unable To Place Calls In The United States
• 10245342Mar 1, 2014Electrical system. Removing / Disabling Rear Park Assist RPO UD7.
• 10073396Mar 1, 2014Equipment. Summary to be provided on a future date.
• 10070902Mar 1, 2014Fuel system. Summary to be provided on a future date.
• 10055381Mar 1, 2014Fuel system. Gm: the fuel temperature sensor contacts the fuel return pipe after pump replacement. Includes make: chevrolet and gmc. Models: silverado 2500/3500 and sierra 2500/3500. Model years 2012-2014.
• 10138655Feb 28, 2014Visibility (wipers, defrost, mirrors), Equipment. This technical bulletin provides a procedure to install double sided tape to the windshield molding to correct the customers concern of a tapping or clicking noise at the winshield area.
• 10138652Feb 27, 2014Equipment. This preliminary bullin provides a procedure to replace the mobile microphone speaker to correct the customers concern for poor voice quality when using bluetooth.
• 10138651Feb 27, 2014Equipment, Fuel system. This informational bulletin explains the use of diesel fuel additives to remove water or enhance performance.
• 10111966Feb 26, 2014Electrical 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.
• 10111964Feb 26, 2014Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have the OnStar system does not respond properly to some numbers and/or voice commands. Dealer should direct the customer to review the operational characteristics in the OnStar Users Guide.
• 10138647Feb 25, 2014Transmission and drivetrain, Electrical system. This preliminary bulletin provides a procedure to reprogram the TCM to correct the customers concern of a bump feel when shifting from drive to reverse.
• 10138646Feb 25, 2014Transmission and drivetrain, Engine, Equipment. This informational bulletin provides a process to the service agents that are not required to contact PQC, to determine when to replace a assembly as opposed to repairing and if an engine or transmission is being returned, that it has all the information in relation to that part being returned.
• 10111962Feb 25, 2014Electrical system. This Preliminary Information communication advises the technician that when replacing the camshaft part number 12626660. Technician will need to ensure that the date code and the finish of the camshaft. If the cam is discolored or has chatter marks, have parts department send the cam back as (MR code7) new defective.
• 10111959Feb 24, 2014Transmission and drivetrain. 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.
• 10111956Feb 24, 2014Engine. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have a no crank concern. Technician will need to check the valve train for movement when the engine is cranked. If the valve train is not moving while the crankshaft is moving the front cover will need to be removed to inspect for a sheared cam sprocket locator pin. If the cam…
• 10138640Feb 21, 2014Visibility (wipers, defrost, mirrors). This warranty bulletin explains how to determine if an outside mirrior was damaged by the customer and what is considered warranty and non-warranty.
• 10138639Feb 21, 2014Equipment, Wheels. This informational bulletin provides the technician the proper way to install and torque the wheel.
• 10138638Feb 21, 2014Wheels. This informational bulletin explains how to balance a chrome wheel without damaging the chrome face of the rim.
• 10138637Feb 21, 2014Wheels, Equipment, Tires. This informational bulletin provides technicians with ways to decrease the tire slipping on the rim and reduce to possible chances of the customers concerns over tire vibration are repair.
• 10138631Feb 18, 2014Tires, Wheels. This technical bulletin provides a procedure on cleaning a leaking rim, to correct a customers concern of having a slow tire leak and low tire psi message on.
• 10138630Feb 18, 2014Equipment, Tires. This informational bulletin explains the use of Nitrogen in GM tires.
• 10138629Feb 18, 2014Tires. This bulletin provides information regarding the normal tire wear condition of slight or mild tire feathering and recommended practices.
• 10138621Feb 17, 2014Equipment. This informational bulletin helps the technician quick reference repairs to bulletins as opposed to replacing parts that may be un necessary.
• 10111934Feb 17, 2014Equipment, Engine cooling. This Preliminary Information communication advises the technician that the Drive Motor Generator Control Module, also known as PIM) for the 2-Mode Hybrid Utilities and Trucks are being placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
• 10138619Feb 14, 2014Engine cooling. This preliminary information bulletin provides a procedure to repair the joint being loose or out of position for the turbocharger to turbocharger exhaust pipe or turbocharger exhaust pipe exhaust downpipe connection, to correct the customers concern of Exhaust Leak or Vibration/Rattle Noise at Approximately 900 RPM, Fuel Smell, White Smoke, Oily Substance on Exhaust Downpipe.
• 10111928Feb 12, 2014Fuel system, Engine. This Preliminary Information communication advises the technician that the 6.6L Duramax Diesel Engine Part number 12638502 has been 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.
• 10111927Feb 12, 2014Brakes, Fuel system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. First after the P0442…
• 10138609Feb 10, 2014Equipment. The informational bulletin provides a procedure to remove and repair rust from a Hem Flange.
• 10138606Feb 10, 2014Visibility (wipers, defrost, mirrors), Equipment. This warranty administration bulletion provides the dealer technician information and guidelines for claiming a windshield.
• 10138605Feb 10, 2014Equipment. This technical bulletin provides a procedure to correct the customers concern of odor coming from the Air conditioning.
• 10138604Feb 7, 2014Electrical system. This preliminary informational bulletin provides service information to the dealer technicians that the remote start will not work with the ONSTAR REMOTE Link applcation
• 10111911Feb 7, 2014Equipment. This Preliminary Information communication provides information to the technician that First Responder Guides for General Motors vehicles can be accessed via the web at http://www.gmstc.com.
• 10138601Feb 6, 2014Equipment, Transmission and drivetrain. This preliminary informational bulletin provides a procedure to inspect the transmissions filter for splits or cracks to correct the customers concern for no forward, reverse or slips.
• 10111894Feb 4, 2014Equipment. This Preliminary Information communication provides information to the technician that General Motors and General Motors of Canada Company do not support cross border sales. The General Motors of Canada Customer Care Centre is the sole authorized provider of a certification confirmation letter which helps our customers identify if their vehicles meets the required USA regulatory standards necessary for importation…
• 10111892Feb 4, 2014Engine. 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.
• 10253174Feb 1, 2014Transmission and drivetrain. NQG 4WD Models With Noise Vibration On Dry Pavement.
• 10246621Feb 1, 2014Equipment. Car and Truck Fix it Right the First Time Issues

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