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Service bulletins for the 2021 Chevrolet Malibu

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

696 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
21NA2552021-12-27. Service bulletin. ELECTRICAL SYSTEM:IGNITION:COIL:SPARK PLUGS; ENGINE. This service bulletin provides repair information to correct a customer concern of an Engine Misfire, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0300 Set.
21NA2202021-12-27. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, ELECTRIC; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); EQUIPMENT. This service bulletin provides a procedure to inspect and possibly repair terminals that may be damaged to correct customer concerns of Loss of Power, Malfunction Indicator Lamp (MIL) Illuminated, Gauges Inoperative and/or Multiple Warning Lights/Messages Displayed on Driver Information Center (DIC).
21NA1692021-12-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.
21NA0542021-12-27. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This service bulletin provides repair information to correct a customer concern of Instrument Cluster Resets, Center Display Goes Blank, or Gauges Inoperative.
19NA1042021-12-27. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.
20NA1322021-12-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
18NA0732021-12-20. Service bulletin. ENGINE. 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.
PIP5812C2021-12-13. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE. This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve (TCV) during cold weather driving
PIP5812B2021-10-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve (TCV) during cold weather driving
PIP58192021-09-13. Service bulletin. POWER TRAIN. This Preliminary information communicates inspection and/or needed repairs for DTC P2714 on a VT40 CVT transmission
PIP5651F2021-09-13. Service bulletin. STRUCTURE; POWER TRAIN. This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
PIC64442021-09-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Preliminary information communicates a possible SIM issue with vehicles in the middle east.
PIT3099U2021-09-13. Service bulletin. EQUIPMENT. 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.
PIP5651E2021-09-13. Service bulletin. STRUCTURE; POWER TRAIN. This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
PIT4261G2021-09-13. Service bulletin. TIRES:SIDEWALL. This Preliminary Information communication provides information to the technician about vehicles with tire sidewall irregularities. This is a visual condition that will not affect durability, reliability or performance of the tires. Dealer should communicate to the customer that slight sidewall indentations are a common characteristic of radial tire construction.
PIP5632E2021-09-13. Service bulletin. EQUIPMENT:ELECTRICAL:ACCESSORY GENERATOR:CONTROLS. 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.
PIP5657D2021-09-13. Service bulletin. ELECTRICAL SYSTEM:IGNITION:COIL:HIGH TENSION/SPARK PLUG WIRES. This Preliminary information communicates the possibility of a misfire occuring due to a broken center insulator on the spark plug.
PIC5650J2021-09-13. Service bulletin. POWER TRAIN; AIR BAGS. 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 Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
PIT5698B2021-09-13. Service bulletin. ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
PIP5657C2021-09-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE. This Preliminary information communicates the possibility of a misfire occuring due to a broken center insulator on the spark plug.
A2023219902021-08-09. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EQUIPMENT; ELECTRICAL SYSTEM. Service Update. Certain vehicles may have engine control module software that leads to erroneous additional fuel enrichment under rare driving conditions. Dealers are to reprogram the engine control module.
N2023160202021-08-09. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Service Update - Radio Software Update (OTA) - Certain 2021 model year vehicles listed above, with an infotainment system, may have a condition where the infotainment system screen will appear black with no audio and no chime at key on during cold temperature conditions. Dealers are to verify radio software level and update if necessary.
990420002L2021-08-09. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
110089002E2021-08-09. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This service bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
080730035E2021-08-09. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.