2021 Chevrolet Colorado Technical Service Bulletins

748 technical service bulletins (TSBs) are on record for the 2021 Chevrolet Colorado. 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.

• 10208034Jan 18, 2022Other or unknown. 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.
• 10208033Jan 18, 2022Engine cooling. This preliminary information is to clarify a normal fluctuation of the temperature gauge.
• 10212598Jan 14, 2022Transmission and drivetrain, Back-over prevention (rear camera). This technical bulletin provides a procedure to replace the turbocharger for vehicles with a condition of Turbocharger Whine Noise due to the blades on the turbo being bent.
• 10208031Jan 14, 2022Wheels. This Preliminary Information communication provides information to the technician about vehicles that have raised dents or ripple appearance in the side outer panel of the cargo box around the perimeter of the wheel house opening. Technician should first access the rear of the inner wheelhouse area through the tail lamp cavity and the front of the wheelhouse from under the vehicle, and coat the inner hem of the…
• 10208029Jan 14, 2022Engine. 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.
• 10208027Jan 14, 2022Brakes, Fuel system. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
• 10214200Jan 13, 2022Fuel system, Engine cooling, Equipment. This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.
• 10208024Jan 13, 2022Back-over prevention (rear camera), Electrical system, Fuel system. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have a fuel gauge that does not read below half a tank. Technician will gain access to the fuel pump and inspect to see if the level sender contacting the side of the fuel tank. The fuel tank fuel pump module fuel level sensor will need to be replaced for this concern.
• 10212625Jan 11, 2022Engine cooling. This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10212620Jan 11, 2022Electrical system. This technical bulletin provides a procedure to inspect and repair possible locations to wiring shorts in the wiring harness or wiring harness contact areas they may cause shorts.
• 10208016Jan 11, 2022Electrical system, Other or unknown. This Preliminary Information communicates to the technician the potential areas of concern in which the engine wiring harness may chafe. It describes in detail what to look for. If you encounter any of these specific described chafes, inspect, repair (as necessary) and route the wiring harness away from these possible chafe points.
• 10213760Jan 10, 2022Brakes. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
• 10212616Jan 10, 2022Engine cooling. This informational bulletin explains how to identify possible DEF contamination.
• 10212615Jan 10, 2022Engine cooling. This informational bulletin provides tips for showing a way to confirm if its a mechanical engine issue or not.
• 10212594Jan 10, 2022Equipment. This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10212590Jan 10, 2022Engine cooling, Equipment. This technical bulletin provides a procedure on how to properly identify if there is any aftermarket calibrations loaded on the ECM or and detection of a power up hardware installed.
• 10213758Jan 7, 2022Fuel system. This service bulletin provides information on availability of Diesel Fuel additives.
• 10212599Jan 6, 2022Electrical system. This informational bulletin explains how the SOOT readings went from grams to percentage. 2-1-18 Change Subject to reflect the test procedure. 5-1-18 Updated the Information section.
• 10212595Jan 6, 2022Engine cooling. This technical bulletin provides a procedure to Tighten the Charge Air Cooler Duct Clamp to correct a condition of an oil leak originating from either the inlet or outlet duct of the turbocharger due to the charge air cooler pipe clamp not being tightened properly.
• 10212589Jan 6, 2022Fuel system. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
• 10212588Jan 6, 2022Other or unknown, Engine cooling. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10213764Jan 5, 2022Equipment. This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
• 10212596Jan 5, 2022Visibility (wipers, defrost, mirrors). This informational bulletin explains how to check the NOx Catalyst Reductant-Load Adaptive Values using GSD2.
• 10212587Jan 5, 2022Back-over prevention (rear camera), Engine cooling, Lane departure. This service bulletin provides service information on a New Way to Look at NOx Sensor Readings and Exhaust Temperature During a DPF Regeneration or a Reductant System Malfunction Warning Service Bay Test.
• 10213767Jan 4, 2022Equipment. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
• 10213759Jan 4, 2022Fuel system. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 10213757Jan 4, 2022Tires. This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks.
• 10206745Dec 23, 2021Equipment, Electrical system. This preliminary information serves as a diagnostic aid for a condition where the ignition switch may not rotate all the way back to the lock position when the ignition is turned off and addresses areas to look for resolution.
• 10206726Dec 14, 2021Engine cooling. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
• 10204457Nov 29, 2021Equipment, Engine cooling. This Preliminary information communicates concerns created by an aftermarket ECM calibration installed by fleet companies. The Fleet companies install aftermarket ECM calibrations to limit the vehicle speed to approximately 70 mph and reduce the over all power output. This calibration also reduces the engine idle speed and may induce a vibration at idle. If the vehicle needs to be returned to factory…
• 10205594Nov 23, 2021Electrical system, Engine. This service bulletin provides diagnostic strategy information to aid in diagnosing a Ticking, Tap or Rattle Noise from Engine with Possible Misfire, Malfunction Indicator Lamp (MIL) Illuminated.
• 10205538Nov 15, 2021Suspension. This technical bulletin provides a procedure for lubricating the rear leaf springs and re-torque the bolts to correct a squeak, clunking noise.
• 10205738Nov 8, 2021Wheels, Tires. This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires.
• 10205539Nov 8, 2021Engine cooling, Equipment. This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.
• 10205737Nov 5, 2021Equipment. 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.
• 10207740Oct 21, 2021Electrical system, Engine. Emission Recall. General Motors has decided to conduct a voluntary emissions recall involving certain vehicles equipped with a 2.8L diesel engine (RPO LWN). The Engine Control Module (ECM) may not have been programmed with all necessary diagnostic features. Dealers are to reprogram the ECM.
• 10202400Sep 22, 2021Fuel system. This Preliminary information communicates a possible issue with the active fuel management rockers causing a misfire and the correction for this concern.
• 10202398Sep 21, 2021Equipment. This Preliminary information communicates a concern where the radio will reboot when adjusting the volume intermittently and that engineering is investigating.
• 10205050Aug 25, 2021Transmission and drivetrain, Air bags. This service bulletin provides a procedure to flush and drain fluids for the transmission to eliminate a shake and/or shudder during a light throttle acceleration between 40 and 128 KM/H (25 and 80 MPH) at a steady state.
• 10205057Aug 20, 2021Fuel system. This service bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.
• 10205052Aug 20, 2021Engine. This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.
• 10201317Aug 18, 2021Electrical system. This Preliminary information communicates to GM dealers that the above mentioned concern is software related and that General Motors is working on a solution.
• 10201310Aug 11, 2021Equipment. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact PARTECH and/or the Techline Customer Support Center for additional support.
• 10205059Aug 6, 2021Electrical system. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10205048Aug 6, 2021Engine. 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.
• 10201253Jul 22, 2021Air bags, Other or unknown, Electrical system. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system…
• 10201177Jul 22, 2021Electrical system. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system…
• 10201252Jul 21, 2021Air bags, Transmission and drivetrain. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency…
• 10201251Jul 21, 2021Electrical system. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
• 10200143Jun 30, 2021Equipment, Brakes. This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting overnight.

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