2012 Chevrolet Tahoe Technical Service Bulletins

1,729 technical service bulletins (TSBs) are on record for the 2012 Chevrolet Tahoe. 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.

• 10125947Jun 13, 2014Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have the check engine light, tow/haul, Supplemental Inflatable Restraint, cruise control or other various indicators or warning lamps will not come on in the instrument panel. Tech will need to the Tech 2 scan tool to command the instrument panel indicator lights on.
• 10125946Jun 13, 2014Back-over prevention (rear camera), Body and structure, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that for no reason the alarm will go active. Technician will need to use a scan tool to verify that the alarm was activated by the inclination sensor. If the trigger is the inclination sensor, inspect the sensor's mounting location. Technician will need to relocate the sensor if it is attached to the driver's side lower…
• 10126278Jun 12, 2014Equipment. This informational bulletin provides the dealer with information on what to do when requesting a new key code for the customer.
• 10126275Jun 5, 2014Equipment. This information bulletin provides dealers with more information on how to better prep a vehicle for pre-delivery.
• 10125933Jun 3, 2014Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicle that have a Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0601, P0603, P0604, P062F or P1621 stored in the Transmission Control Module. Technician will need to ensure that the Diagnostic Trouble Codes are set in the Transmission Control Module. If the Diagnostic Trouble Codes are only set…
• 10247767Jun 1, 2014Equipment. Unwanted Alarm Sounding (GM Accessory Inclination Sensor Mounting)
• 10247738Jun 1, 2014Body and structure. Whistle Noise From Drivers Side A Pillar Area.
• 10247112Jun 1, 2014Equipment. Unwanted Alarm Sounding (GM Accessory Inclination Sensor Mounting)
• 10247083Jun 1, 2014Body and structure. Whistle Noise From Drivers Side A Pillar Area.
• 10137937May 30, 2014Tires. This informational bulletin provides explanation on using the tire sealent in the GM kit as a temporary fix only untill the tire can be properly repaired under the new tire warranty.
• 10137935May 29, 2014Engine, Transmission and drivetrain. 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.
• 10137934May 29, 2014Engine cooling, Transmission and drivetrain. This informational bulletin provides information to the technician on what parts of an engine or transmission will require the PQC to be notified.
• 10112091May 29, 2014Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have an air condition that has poor performance during high ambient temperatures. Technician will need to check the refrigerant charge and record the recovered amount on the repair order. Technician should recharge the system if needed. Technician will also need to verify if Global Diagnostic System 2 high side…
• 10137932May 28, 2014Electrical system, Equipment. This warranty bulletin explains how to use the EL-50313 Midtronic GR8 Battery tester to test a battery and determin if it is warranty or not.
• 10112082May 23, 2014Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that loose connection between the vehicle and a Bluetooth phone. Technician will need to use a scan tool to check the "Firmware Over-the-Air" value. If the "Firmware Over-the-Air" value is up to date and customer's concern is still present contact General Motors Technical Assistance Center for further assistance.
• 10137928May 22, 2014Equipment, Tires. This informational bulletin explains a normal condition of new tires may shake and vibrate for the first few miles.
• 10137927May 22, 2014Equipment, Tires. This informational bulletin provides the technician with information on tire radial force variations and how to balance a tire using the balancer.
• 10112079May 21, 2014Equipment, Transmission and drivetrain. This Preliminary Information communication advises the technician that the Auxiliary Transmission Fluid Pump Control Module and Auxiliary Transmission Fluid Pump placed on parts restriction by General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
• 10137924May 20, 2014Equipment. This informational bulletin provides options/packages that can be installed on PPV.
• 10112078May 20, 2014Engine cooling, Electrical system. This Preliminary Information communication advises the technician that the 2-Mode Drive Motor Generator Battery placed on parts restriction by General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
• 10137919May 19, 2014Equipment. This informational bulletin helps the technician quick reference repairs to bulletins as opposed to replacing parts that may be un necessary.
• 10137918May 19, 2014Electrical system, Equipment. This informational bulletin explains if the fuse is open when the customer plugs in the trailer, that it may be the cause if diagnostics finds no problems to that point.
• 10137915May 16, 2014Engine cooling. This informational bulletin explains a normal condition from changes in Exhaust Tone for Active Fuel Management Engines when in Three or Four Cylinder Mode
• 10137914May 16, 2014Equipment. This informational bulletin provides tips on how to care for the interior of the vehicle using products.
• 10112069May 14, 2014Engine, 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…
• 10137905May 13, 2014Electrical system. This preliminary bulletin provides information to the technician, to check for loose grounds and the correct labor op to use
• 10137903May 12, 2014Equipment. This preliminary bulletin states to add the DTC symptom byte to the documentation to help aid engineering pinpoint concerns when trying to locate a root cause.
• 10137901May 9, 2014Fuel system. This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.
• 10112060May 7, 2014Equipment, Transmission and drivetrain. This Preliminary Information communication advises the technician that the 2ML70 Transmission Assembly will be placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
• 10112055May 6, 2014Brakes, Transmission and drivetrain. 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. Technician will use this preliminary information to find the brake pedal position data parameters…
• 10137890May 2, 2014Equipment, Transmission and drivetrain, Engine cooling. This informational bulletin provides information to the technician on what parts of an engine or transmission will require the PQC to be notified.
• 10253148May 1, 2014Transmission and drivetrain. Auxiliary Transmission Fluid Pump.
• 10247763May 1, 2014Transmission and drivetrain. Unwanted Grade Braking - Low Power - And/Or Transmission Busy Shifting.
• 10247678May 1, 2014Electrical system. High Voltage 2-Mode Battery Parts Restriction-TAC
• 10247108May 1, 2014Transmission and drivetrain. Unwanted Grade Braking - Low Power - And/Or Transmission Busy Shifting.
• 10246983May 1, 2014Equipment. Checking Smartphone Bluetooth Software Update Status
• 10246624May 1, 2014Equipment. Car and Truck Fix it Right the First Time Issues
• 10245317May 1, 2014Electrical system. High Voltage 2-Mode Battery Parts Restriction-TAC
• 10056237May 1, 2014Electrical system. General motors: due to loose ground terminal connections, in some vehicles and trucks experience, accessories malfunctions, dic messages, ipc warning indicators, ses light on.
• 10135227Apr 28, 2014Equipment. This informational bulletin provides information to the dealers on properly maintaining vehicles in inventory.
• 10093959Apr 27, 2014Equipment. 12050b - customer satisfaction (revised expiration date). Certain vehicles, all equipped with a 10.5" rear axle, may have a condition in which the rear axle right-hand side bearing adjuster clip and bolt may come loose within the rear axle. If this occurs, a grinding noise and a vehicle vibration would be noticeable when the vehicle is in motion. If the adjustor or bolt punctures the differential cover pan, a fluid…
• 10135219Apr 22, 2014Exterior lighting. This informational bulletin explains condensation in exterior lights and replacment guidelines for warranty replacement.
• 10135218Apr 22, 2014Equipment. This informational bulletin is to assist with the identification of issues that are not considered warrantable.
• 10111812Apr 18, 2014Equipment. This Preliminary Information communication provides information to the technician about vehicles that when the front radio source is on CD and rear seat audio control is on XM, the CD track changes when the RSA control is used to change XM stations. Technician should USB update the radio using TIS2Web.
• 10111811Apr 18, 2014Electrical system, Equipment. 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.
• 10111810Apr 17, 2014Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory pats. Technician can check Service Information for some accessories. Technician can also contact Partect for assistance. Technician can also contact Techline Customer Support Center for programming issues.
• 10111805Apr 16, 2014Engine cooling, Engine. 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…
• 10135202Apr 15, 2014Electrical system. This informational bulletin provides information on how to disable high voltage safely.
• 10135201Apr 14, 2014Equipment. This information bulletin provides the technician with additional information on fixing the vehicle right the first time by listing possible concerns to specific vehicles.
• 10135200Apr 14, 2014Equipment. This preliminary bulletin provides a procedure to install a new cabin air filter kit for vehicles that did not have one if the customer whants one installed to fix the concern of dust intruding into cabin interior.

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