2001 Chevrolet Express Technical Service Bulletins

324 technical service bulletins (TSBs) are on record for the 2001 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.

• 10083898Apr 27, 2016Electrical system, Equipment. This preliminary information communication advises the technician if unable to place an onstar call in the ignition on mode after the onstar canada upgrade, to contact the gm technical assistance center onstar group for further assistance.
• 10083884Apr 19, 2016Equipment. This preliminary information communication advises the technician on the steps for diagnosing the concern. The vehicle may be unable to connect to onstar using the white, blue or red onstar buttons.
• 10083489Apr 19, 2016Equipment. This preliminary information communication advises the technician the steps on repairing the concern. A customer may identify a concern of unable to reactivate a vehicle's onstar that has been previously disabled by onstar. Dealer is to call general motors technical assistance center for further assistance if the concern is still present.
• 10083484Apr 19, 2016Electrical system. This preliminary information communication provides information to help the dealership technicians perform a parasitic drain test for the onstar module. When performing battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the onstar system.
• 10078735Apr 19, 2016Electrical system. This preliminary information communication provides information to help the dealership technicians perform a parasitic drain test for the onstar module. When performing battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the onstar system.
• 10078734Apr 19, 2016Electrical system. This preliminary information communication advises the technician the steps on repairing the concern. A customer may identify a concern of unable to reactivate a vehicle's onstar that has been previously disabled by onstar. Dealer is to call general motors technical assistance center for further assistance if the concern is still present.
• 10083900Apr 8, 2016Electrical system, Equipment. This preliminary information communication advises the technician, if unable to place an onstar call in the ignition on mode after the onstar canada upgrade to contact the gm technical assistance center onstar group for further assistance.
• 10113921Mar 8, 2016Equipment. This Preliminary Information communication advises the technician after the OnStar Canada upgrade the OnStar Vehicle Diagnostic Email report is inoperative. Please communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
• 10112779Mar 7, 2016Electrical system. This informational bulletin provides information on vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak and that this is considered a normal conditon and no repairs are necessary
• 10113914Mar 4, 2016Engine cooling. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the coil grounds ring terminal at the engine block for the bank with the concern and repair the wire.
• 10114431Feb 23, 2016Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
• 10096073Feb 17, 2016Transmission and drivetrain. This preliminary information communication provides information to the technician about vehicle that after a transmission or torque converter replacement the vehicle may have a harsh 1-2 upshift and the check engine light or service engine soon indicator is illuminated. If you have duplicated the customer’s concern and found diagnostic trouble code p0894 or p1870 set in the transmission control module please…
• 10116890Feb 12, 2016Exterior lighting. This informational bulletin provides an out line on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage and what should be considered warranty replacement and not
• 10096026Feb 11, 2016Equipment. This preliminary information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
• 10116874Feb 8, 2016Exterior lighting. This informational bulletin provides information on exterior lamp condinsation and replacement guidelines
• 10096184Feb 8, 2016Electrical system, Equipment. 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 5.2.4 odometer servicing.
• 10112299Jan 27, 2016Equipment. This informational bulletin provides information on Part Restriction and Ordering Process Information for OnStar Vehicle Communication Interface Modules (VCIM) (GMNA Only)
• 10114980Dec 18, 2015Equipment. This Preliminary Information communication provides information to the technician about vehicles that when dialing certain numbers using OnStar Hands-free Calling, the audio is distorted or has poor quality after performing the OnStar Canada Upgrade. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
• 10114969Dec 15, 2015Equipment, Engine cooling. This Preliminary Information communication provides additional information to the technician when replacing the Duramax Diesel head gasket. This is a supplement to procedure found in Service Information. The left and right cylinder head gaskets are not interchangeable and will block oil and coolant passages if installed incorrectly resulting in severe damage to the engine.
• 10114954Dec 9, 2015Fuel system, Engine cooling. 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…
• 10114947Dec 4, 2015Equipment. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 10201115Dec 1, 2015Equipment, Other or unknown. OnStar Voice Fallback Number Update
• 10190512Dec 1, 2015Electrical system, Equipment. OnStar® Voice Fallback Number Update Some customers may have received a letter from OnStar® stating that "We recently tried to provide a software update to the OnStar® hardware in your vehicle. However, your system could not be updated remotely.
• 10115143Nov 30, 2015Engine cooling. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
• 10115128Nov 23, 2015Equipment. This Preliminary Information communication provides information to the technician about vehicle's odometer appears to be inaccurate relative to a known distance traveled. Technician should obtain a hand-held GPS unit to test the odometer. If a hand held GPS unit is not available, the only other option is to verify the miles traveled using a surveyor's wheel or a dynamometer.
• 10115093Nov 4, 2015Fuel system, Other or unknown. This Preliminary Information communication provides information to the technician about a customer?s request to remove or disable the Bi-Fuel Compressed Natural Gas system. General Motors does not condone the removal of the original equipped Compressed Natural Gas systems.
• 10114924Oct 23, 2015Equipment. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
• 10114916Oct 21, 2015Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicle that after a transmission or torque converter replacement the vehicle may have a harsh 1-2 upshift and the Check Engine Light or Service Engine Soon indicator is illuminated. If you have duplicated the customer?s concern and found Diagnostic Trouble Code P0894 or P1870 set in the Transmission Control Module please…
• 10114903Oct 16, 2015Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicles that may have an issue when using Bluetooth voice recognition with an iPhone. Technician should work with the customer to insure the phone contacts to not have any Emojis loaded to any contact.
• 10114894Oct 14, 2015Suspension, Body and structure. This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be…
• 10114876Oct 9, 2015Engine. This Preliminary Information communication provides information to the technician vehicles with a slight rough idle. Technician should compare the concern with a like vehicle. If the concern is worse than a like vehicle, technician should follow published Service Information diagnosis and repair as necessary.
• 10114873Oct 9, 2015Engine, Fuel system. This Preliminary Information communication provides information to the technician about vehicles that have a hard start when the engine is hot. If the fuel found in the vehicle has an American Petroleum Institute specific gravity reading of 39 - 44, and the fuel sample you used for comparison has an American Petroleum Institute specific gravity reading of 30 - 39, drain the fuel system and refill with a known good…
• 10127238Sep 29, 2015Electrical system. This Preliminary Information communication provides information to the technician about vehicles that the incoming caller ID may no longer be available or displayed after the Canada OnStar upgrade. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a solution for this concern.
• 10127230Sep 28, 2015Fuel system. This Preliminary Information communication provides information to the technician to help determine if the vehicle is equipped with factory or aftermarket Compressed Natural Gas, Liquefied Petroleum Gas, or Bi-Fuel Systems. Technician will check for the Vehicle Emission Control Information Label.
• 10113787Aug 3, 2015Seat belts. This informational bulletin provides information to advise dealers about seat belt buckles not operating and/or seat belt warning light illumination, as well as difficulty latching and unlatching the buckle or the buckle release button sticking.
• 10115067Jun 22, 2015Electrical system. This Preliminary Information communication provides information to the technician about being unable to receive OnStar ?Over The Air? updates. Technician will need to press the OnStar button and verify they have an active account and that the call connects with data and location.
• 10113687Jun 11, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10115026Jun 8, 2015Electrical system. This Preliminary Information communication provides information to the technician about vehicles that may have the OnStar wireless fidelity inoperative. Technician will need to contact General Motors Technical Assistance Center with a scan tool connect to the vehicle for further assistance.
• 10113662May 27, 2015Fuel system, Other or unknown. This informational bulletin provides dealership personnel with information on flexible fuel vehicles (FFVs) and the usage of E85 fuel in GM vehicles.
• 10113654May 15, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10113652May 15, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.
• 10114527May 8, 2015Engine cooling. This Preliminary Information communication provides additional information to the technician when replacing the Duramax Diesel head gasket. This is a supplement to procedure found in Service Information. The left and right cylinder head gaskets are not interchangeable and will block oil and coolant passages if installed incorrectly resulting in severe damage to the engine.
• 10113614Apr 27, 2015Equipment. This informational bulletin provides information to assist dealership personnel with the identification of vehicle headlamp, tail lamp, license lamp or fog/driving lamp damage that are not considered warrantable.
• 10114474Apr 20, 2015Equipment. This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
• 10114470Apr 17, 2015Electrical system, Equipment. This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue or red button. Technician will need to call General Motors Technical Assistance Center with the scan tool data from the OnStar system.
• 10114453Apr 7, 2015Fuel system. This Preliminary Information communication provides information to the technician about vehicles that may have a buzz noise at idle after fuel pressure regulator replacement. Technician will need to gain access to the fuel pump. After gaining access to the fuel pump check the power and ground for voltage drop with the key in the off from the fuel pump to the battery post. Technician should also check the pin fit…
• 10090078Mar 23, 2015Brakes. 14301 - special coverage. On some vehicles, equipped with a hinged left side rear door (e26), inadequate clearance may result in abrasion to one or both rear brake lines. This could cause brake fluid loss resulting in decreased brake line pressure, increased brake pedal travel and increased stopping distance.
• 10135369Mar 2, 2015Electrical system. This informational bulletin provides information on communication with OnStar® module after Canadian cellular upgrade.
• 10113722Mar 2, 2015Equipment. This informational bulletin provides information on communication with OnStar® module after Canadian cellular upgrade.
• 10113720Mar 2, 2015Equipment. This informational bulletin provides information on a GM of Canada OnStar® cellular communication upgrade.

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