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.

• 10138574Jul 8, 2014Equipment. This Technical bulletin provides a procedure to request a hard mute from Onstar when navigation is annoucing directions and to correct the customers concern of the radio being loud during navigation.
• 10137824Jul 8, 2014Equipment, Electrical system. This Technical bulletin provides a procedure to request a hard mute from Onstar when navigation is annoucing directions and to correct the customers concern of the radio being loud during navigation.
• 10112103Jul 8, 2014Fuel system. This Preliminary Information communication provides information to the technician about vehicles that may have a fuel leak or fuel odor. Technician may find Diagnostic Trouble Codes. If Diagnostic Trouble Codes are found technician should use published Service Information diagnostics first. If fuel leaks are found at the high pressure pump to fuel rail line fitting connections, technician should inspect the high…
• 10112102Jul 8, 2014Electrical system. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10248462Jul 1, 2014Electrical system. Service Charging System Message Or Low Volt Gauge Reading After Cold Start.
• 10247304Jul 1, 2014Fuel system, Equipment. Cutaway Equipped with Gasoline or Liquefied Petroleum Gas (LPG) Fuel Engines
• 10246499Jul 1, 2014Other or unknown, Equipment, Electrical system, Fuel system. Duramax® Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available
• 10140353Jul 1, 2014Equipment. This information for Warranty administration - Changes the Service Policy and Procedures Section 1.6.2.11 and list the requirements for the dealer to comply.
• 10137818Jul 1, 2014Equipment. This information for Warranty administration - Changes the Service Policy and Procedures Section 1.6.2.11 and list the requirements for the dealer to comply.
• 10070636Jul 1, 2014Engine. Summary to be provided on a future date.
• 10067263Jul 1, 2014Equipment. Summary to be provided on a future date.
• 10064448Jul 1, 2014Equipment. Summary to be provided on a future date.
• 10056258Jul 1, 2014Fuel system. Gmc/chevrolet: at bottom of flywheel housing, a leak is found, causing a fuel odor, due to high pressure pump to high pressure line fitting or fuel rail connection. 2010-2015 express, sierra, savana, silverado.
• 10248444Jun 30, 2014Equipment. Vehicle Recalls
• 10126308Jun 26, 2014Suspension. This informational bulletin was created to aid the technician in diagnosing the difference between a shock or strut that has a fluid residule from a possible external source from a leaking shaft seal.
• 10125976Jun 26, 2014Engine, Fuel system. This Preliminary Information communication provides information to the technician about vehicles that may have an engine buzz, moan, rattle, whine, or vibration type noise that can typically be heard at idle or low revolutions per minute. The noise does not indicate a problem and will not result in damage to the pump or the engine. If the customer is dissatisfied with the oil pump whine noise replacement of the oil…
• 10125975Jun 26, 2014Electrical system, Fuel system. This Preliminary Information communication provides information to the technician about vehicles that may have a hard start, no start, rough running, or low fuel pressure. Technician may find Diagnostic Trouble Codes P0087, P0088, P0191 and P128E during the inspection. If during the inspection of the fuel system contamination is found the complete fuel system will need to be cleaned and flushed. After the fuel…
• 10125973Jun 26, 2014Electrical system. This Preliminary Information communication provides information to the technician about vehicles that may have Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Code P0420, P24A0 and or P2463. Technician should follow published Service Information diagnostics for the Diagnostic Trouble Codes that are set. If the diagnostic leads to diagnosis or replacement of the Q57 Indirect Exhaust…
• 10125968Jun 25, 2014Electrical system. This Preliminary Information communication provides information to the technician about vehicles that may have a "Service Charging System" message displayed on the Driver Information Center or low voltage reading on the volt gauge during the first several minutes after a cold start. Technician may find Diagnostic Trouble Code B1517 sym 03. Technician will need to update the calibration in the Body Control Module by…
• 10126301Jun 24, 2014Equipment. This preliminary bulletin explains to the technician to use the vin when reprogramming the radio using the techline/service programming systems.
• 10126291Jun 18, 2014Visibility (wipers, defrost, mirrors). This preliminary bulletin provides a procedure on how to reset the power folding mirriors after they been folded manually, to fix the customers concern of the mirriors shaking or fluttering at normal driving speeds.
• 10126285Jun 16, 2014Equipment. This preliminary bulletin provides procedures on how to reset or refresh the XM radio receiver is the customers states that they only get a few channels.
• 10125956Jun 16, 2014Equipment. This Preliminary Information communication provides information to the technician about vehicles that may not receiving all channels on the XM band. Technician will need to use a scan tool and verify current Digital Radio Receiver Status under Data Display. Technician will need to look at the second line labeled Digital Radio Receiver Status will display a number of 00 - 04. Technician will repair per the status…
• 10125953Jun 16, 2014Equipment. This Preliminary Information communication provides information to the technician on the programming and activation of the OnStar system. For many 2008 and prior model year GM vehicles, the programming is performed using the Tech 2 and the activation is initiated by a Service Programming System.
• 10126280Jun 13, 2014Equipment. This preliminary bulletin provides a information to the dealer for the requirements need for equipment.
• 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.
• 10125934Jun 4, 2014Fuel system. This Preliminary Information communication advises the technician that the Diesel Oxidation Converter part numbers 15231895, 22768282, 22770967, 22887212, 22893734 and 22977171 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.
• 10253413Jun 1, 2014Fuel system. Duramax Fuel System Contamination Identification.
• 10248461Jun 1, 2014Electrical system. Service Charging System Message Or Low Volt Gauge Reading After Cold Start.
• 10248460Jun 1, 2014Electrical system. Service Charging System Message Or Low Volt Gauge Reading After Cold Start
• 10070635Jun 1, 2014Engine. Summary to be provided on a future date.
• 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.
• 10112094May 29, 2014Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have "Service Charging System" message displayed on the DIC and/or a low voltage reading on the volt gauge during the first several minutes after a cold start. Technician may find B1517 sym 03 may be set. Technician will update the Body Control Module with the latest calibrations.
• 10112093May 29, 2014Electrical system. This Preliminary Information communication provides information to the technician about vehicles with a "Service Charging System" message displayed on the Driver Information Center and/or a low voltage reading on the volt gauge during the first several minutes after a cold start. Technician may find a Diagnostic Trouble Code B15517 sym 03. If this concern only occurs during the first several minutes of a cold…
• 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.
• 10061375May 27, 2014Air bags. Summary to be provided on a future date.
• 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.
• 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.
• 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
• 10092906May 13, 2014Engine cooling, Engine. 14096a - emissions recall (revised service procedure). General motors has decided to conduct a voluntary emission recall involving certain vehicles equipped with a gasoline engine. The oxygen (o2) sensor may fracture if condensation from the catalytic converter enters the o2 sensor and causes a sudden temperature change. If this occurs, the malfunction indicator lamp will illuminate.
• 10061204May 13, 2014Equipment. Summary to be provided on a future date.
• 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.

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