2023 Chevrolet Trailblazer Technical Service Bulletins

485 technical service bulletins (TSBs) are on record for the 2023 Chevrolet Trailblazer. 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.

• 10249579Jan 12, 2024Engine cooling, Transmission and drivetrain. This PI bulletin advises the technician on the proper way to install the pistons in an engine.
• 10249011Jan 12, 2024Exterior lighting. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
• 10249974Jan 10, 2024Transmission and drivetrain. This Preliminary information communicates inspection and/or needed repairs for DTC P2714 on a VT40 CVT transmission
• 10249531Jan 10, 2024Transmission and drivetrain. This service bulletin advises the technician to replace valve body first to determine if that is the issue for and if not, to inspect internal parts of transmission for any signs of abnormal wear to correct customer concerns of Loss of Forward gear, slipping, MIL.
• 10249535Jan 8, 2024Electrical system. This preliminary information (PI) provides information om Service Programming System (SPS) Error Codes (E4398, E4399, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491 or E6961).
• 10248715Dec 19, 2023Equipment, Transmission and drivetrain, Electrical system. This service bulletin provides service procedure information to correct a customer concern of Shift to Park Displayed on DIC When Vehicle is in- Park, No Start - DTC B000A Set.
• 10248716Dec 18, 2023Engine cooling. This service bulletin provides a procedure to fix an oil leak from a porous area at the cylinder head and how to fix it so that the engine does not have to be replaced.
• 10249294Dec 15, 2023Other or unknown, Electrical system. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
• 10247551Dec 14, 2023Body and structure. This service bulletin provides repair information to correct a customer concern of a Rear Side Door Weatherstrip Coming Loose.
• 10247552Dec 12, 2023Equipment. This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
• 10247192Dec 8, 2023Equipment, Engine cooling, Electrical system. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10247194Dec 7, 2023Engine cooling. This informational bulletin provides Information on Purge Pump Part Replacement and Purge Part Number Interchange.
• 10246078Dec 4, 2023Engine cooling. Emission Recall - General Motors has decided to conduct a voluntary emissions recall involving certain vehicles. The Vehicle Emissions Control Information (VECI) label may not have been installed. Additionally, other documentation including the owner’s portfolio and Monroney Label may not have been provided with the vehicle. Dealers are to install a VECI label and provide the owner with the owner’s portfolio…
• 10246493Nov 28, 2023Engine cooling, Electrical system. This engineering information (EI) Lite closure ends the need for requesting technicians to use the steps in the Field Product Report (FPR) App in regard customers finding engine oil under the vehicle.
• 10246477Nov 22, 2023Electrical system, Transmission and drivetrain. This technical bulletin provides a procedure to replace the shifter if the park switch has been found with bad pins, causing the customers concern.
• 10245571Nov 17, 2023Engine cooling. This bulletin provides a procedure to test the turbo wastegate regulator valve before replacing the turbo for a possible rattle and/or code concern.
• 10245570Nov 16, 2023Electrical system, Transmission and drivetrain. This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.
• 10245559Nov 16, 2023Engine cooling, Exterior lighting, Electrical system, Equipment. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 10247353Nov 14, 2023Equipment. This Preliminary Information communication advises the technician to determine if the incorrect part number TCM has been installed causing DTC P30D9 to set
• 10247348Nov 7, 2023Equipment. This PI states that a vehicle may exhibit a concern of the cross traffic alert indicators not displaying on the radio screen. While this is a customer dissatisfier, it does not pose a safety concern due to the fact that the customer will still be alerted to an approaching vehicle by the seat vibration. Dealers are advised that engineering is working on a resolution and it will be available by the end of 2023.
• 10245401Nov 7, 2023Transmission and drivetrain. This informational bulletin explains how to check if the pulley and/or drive chain has any damage caused by low fluid or a code set that causes the transmission to default maxing out pressure.
• 10245395Nov 6, 2023Suspension, Transmission and drivetrain, Engine cooling, Wheels, Steering. This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns.
• 10245352Nov 2, 2023Exterior lighting, Equipment. This informational bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
• 10245250Oct 30, 2023Wheels. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10246025Oct 26, 2023Other or unknown. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
• 10246022Oct 26, 2023Transmission and drivetrain. This Preliminary Information communication advises the technician to determine if the incorrect part number TCM has been installed causing DTC P30D9 to set
• 10245248Oct 25, 2023Equipment, Electrical system. This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic (voltage patterns) to aid Technical Assistance (TAC) and Field Service Engineers (FSEs) in diagnosing electrical issues present on network communication circuits.
• 10244326Oct 11, 2023Equipment. This service bulletin provides information on General Motors Dealership Critical Equipment Requirements and Recommendations.
• 10244274Oct 6, 2023Wheels. This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
• 10244273Oct 6, 2023Engine cooling. This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 10244315Oct 3, 2023Equipment. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 10244275Oct 3, 2023Brakes. This service bulletin provides information for dealers/technicians on a normal characteristic of Brake Pedal - Excessive Click Noise with Slight Press of the Brake Pedal.
• 10244276Oct 2, 2023Equipment. This warranty bulletin provides information on Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
• 10244202Sep 28, 2023Tires, Wheels. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10244201Sep 26, 2023Equipment. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
• 10244200Sep 26, 2023Equipment. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
• 10244174Sep 21, 2023Equipment. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
• 10243983Sep 19, 2023Brakes, Electrical system. This technical bulletin provides a procedure to test and replace the brake pedal to correct a customer concern that the cruise control will not set, and/or won’t re-engage after braking.
• 10242844Sep 8, 2023Engine cooling. This service bulletin explains the difference in oil filters for gas engines with new oil pump control systems and the possibilities of what may happen using the incorrect filter.
• 10242980Sep 7, 2023Engine cooling, Electrical system. This bulletin provides a procedure to test the turbo wastegate regulator valve before replacing the turbo for a possible rattle and/or code concern.
• 10243717Sep 5, 2023Equipment. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
• 10241938Sep 5, 2023Electrical system. Customer Satisfaction Program - Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain 2022 and 2023 model year vehicles, built beginning December 2, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified, that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers…
• 10242843Sep 1, 2023Transmission and drivetrain, Engine cooling. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
• 10242842Sep 1, 2023Equipment. This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 10242262Aug 24, 2023Engine cooling. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10242307Aug 22, 2023Engine cooling. This Preliminary information communicates information regarding normal debris that could be found in the engine oil or engine oil pan during service generated by the wet belt system wear in.
• 10242306Aug 21, 2023Electronic stability control. This Preliminary information communicates to dealership technicians that if they receive a radio with the 2 stickers as noted above, the radio was remanufactured with missing components and will need to order another radio unit from the ESC to properly repair the vehicle at this time.
• 10242256Aug 18, 2023Engine cooling. This Engineering Information (EI) Lite ends the need for gathering information on a coolant leak using the FPR App.
• 10242244Aug 18, 2023Engine cooling. This bulletin provides a procedure to test the turbo wastegate regulator valve before replacing the turbo for a possible rattle and/or code concern.
• 10242207Aug 18, 2023Equipment. This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).

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