The manufacturer’s record · Page 8 of 8
Original record summaries, dates and identifiers for this model-year. Records 701–753 of 753, ordered newest first. Dated records on this page: Apr 6, 2020–Oct 23, 2020.
Back to 2021 Chevrolet TRAILBLAZER problems & recallsThis archive includes service bulletins, warranty notices, software instructions and other communications. Records may repeat or supersede earlier instructions. A model-year association is not proof that a document covers every engine, trim, VIN or reported symptom, or that a repair is free.
NHTSA download snapshot: Sep 28, 2026. These are communication associations for this vehicle, not unique defects. How records are joined and counted.
NHTSA communication ID: 10183782
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
Source components: ELECTRICAL SYSTEM · EQUIPMENT · POWER TRAIN:AUTOMATIC TRANSMISSION.
Source record 10183782 at NHTSANHTSA communication ID: 10183126
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
Source components: ENGINE.
Source record 10183126 at NHTSANHTSA communication ID: 10183208
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of All-Wheel Drive Off and/or Service All-Wheel Drive System Messages Displayed in the DIC.
Source components: ELECTRICAL SYSTEM:ADAS:HILL START ASSIST:SOFTWARE · POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT.
Source record 10183208 at NHTSANHTSA communication ID: 10182566
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer that if the service AWD (All-Wheel Drive) or AWD (All-Wheel Drive) Off messages are on and there is a history DTC of C15C9 SYM02 set then no repairs are to be made at this time, a software issue was found and Engineering is working on a permanent solution. If the DTC is setting current then published diagnosis needs to be followed.
Source components: ELECTRICAL SYSTEM.
Source record 10182566 at NHTSANHTSA communication ID: 10183779
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
Source components: FUEL SYSTEM, DIESEL.
Source record 10183779 at NHTSANHTSA communication ID: 10182556
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer technician a diagnostic tip related to a tapping noise from the engine.
Source components: ENGINE AND ENGINE COOLING.
Source record 10182556 at NHTSANHTSA communication ID: 10182554
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
Source components: ELECTRICAL SYSTEM.
Source record 10182554 at NHTSANHTSA communication ID: 10183780
NHTSA source summary · Original PDF not reviewed by Recallfolio
This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
Source components: EQUIPMENT.
Source record 10183780 at NHTSANHTSA communication ID: 10183221
NHTSA source summary · Original PDF not reviewed by Recallfolio
Emission Recall - General Motors has decided to conduct a voluntary emission recall on certain vehicles with a 1.2L engine (RPO LIH). These vehicles may have received incorrect catalytic converter parts that do not meet all emission system requirements. Dealers are to inspect the catalytic converter and replace if the correct part was not installed.
Source components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR.
Source record 10183221 at NHTSANHTSA communication ID: 10183791
NHTSA source summary · Original PDF not reviewed by Recallfolio
This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to loss of and/or reduced propulsion and multiple DTCs set.
Source components: ENGINE AND ENGINE COOLING.
Source record 10183791 at NHTSANHTSA communication ID: 10183219
NHTSA source summary · Original PDF not reviewed by Recallfolio
Emission Recall - General Motors has decided to conduct a voluntary emission recall on certain vehicles with a 1.2L engine (RPO LIH). These vehicles may have received incorrect catalytic converter parts that do not meet all emission system requirements. Dealers are to inspect the catalytic converter.
Source components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR.
Source record 10183219 at NHTSANHTSA communication ID: 10181724
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
Source components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL.
Source record 10181724 at NHTSANHTSA communication ID: 10181686
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.
Source components: ENGINE AND ENGINE COOLING.
Source record 10181686 at NHTSANHTSA communication ID: 10181675
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
Source components: EQUIPMENT · STRUCTURE:BODY.
Source record 10181675 at NHTSANHTSA communication ID: 10181174
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication advises the technician that the engine exchange program on vehicles equipped with engine Regular Production Option Code LIH has ended. This engine can now be ordered through the regular General Motors Customer Care and Aftersales parts process or Product Quality Center process for required dealers.
Source components: ENGINE.
Source record 10181174 at NHTSANHTSA communication ID: 10181691
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct customer concerns of Power Liftgate and/or Instrument Panel Cluster (IPC) Inoperative, No Audio, AWD/ 2WD Light Toggles Randomly, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0650, P15A1, P159F-00, U0184-00, U0198-00 and/or U1501-00 Set.
Source components: ELECTRICAL SYSTEM · STRUCTURE:BODY:HATCHBACK/LIFTGATE.
Source record 10181691 at NHTSANHTSA communication ID: 10181656
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update - Certain vehicles may have condition that a MIL illuminates on the dash and technicians may find one or more following DTC(s) sets: P2B95, P2B08, P2B09, P2B0A, P2B96, P2B00, P2B01, or P2B02. Dealers are required to reprogram the engine control module.
Source components: ELECTRICAL SYSTEM.
Source record 10181656 at NHTSANHTSA communication ID: 10181153
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary Information communication advises the technician that the engine exchange program on vehicles equipped with engine Regular Production Option Code L3T has ended. This engine can now be ordered through the regular General Motors Customer Care and Aftersales parts process or Product Quality Center process for required dealers.
Source components: ENGINE AND ENGINE COOLING.
Source record 10181153 at NHTSANHTSA communication ID: 10181659
NHTSA source summary · Original PDF not reviewed by Recallfolio
Stop Delivery. Incorrect emission parts may have been installed on these vehicles.
Source components: ENGINE AND ENGINE COOLING.
Source record 10181659 at NHTSANHTSA communication ID: 10181695
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
Source components: ELECTRICAL SYSTEM · EQUIPMENT.
Source record 10181695 at NHTSANHTSA communication ID: 10181712
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of an Unwanted Electric Park Brake Setting.
Source components: PARKING BRAKE:ELECTRICAL.
Source record 10181712 at NHTSANHTSA communication ID: 10181684
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a repair procedure to correct a customer concern of start/stop inoperative, MIL illuminated w/DTC P2797.
Source components: ELECTRICAL SYSTEM.
Source record 10181684 at NHTSANHTSA communication ID: 10181697
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of Flutter or Boom Noise at 1200 RPM- Service Calibration.
Source components: ELECTRICAL SYSTEM:SOFTWARE · ENGINE · STRUCTURE:BODY.
Source record 10181697 at NHTSANHTSA communication ID: 10181660
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
Source components: POWER TRAIN.
Source record 10181660 at NHTSANHTSA communication ID: 10179653
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates the possibility of the vehicle having dtc P2B95 in history and possibly P2B96 P2B0A, P2B08, or P2B09 due to a software anomally.
Source components: ELECTRICAL SYSTEM:SOFTWARE.
Source record 10179653 at NHTSANHTSA communication ID: 10213750
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update Bulletin. Certain vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and repair vehicles that fail the inspection.
Source components: ENGINE AND ENGINE COOLING · EQUIPMENT.
Source record 10213750 at NHTSANHTSA communication ID: 10180317
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
Source components: TIRES.
Source record 10180317 at NHTSANHTSA communication ID: 10180315
NHTSA source summary · Original PDF not reviewed by Recallfolio
This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
Source components: ELECTRICAL SYSTEM.
Source record 10180315 at NHTSANHTSA communication ID: 10180293
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.
Source components: POWER TRAIN:AUTOMATIC TRANSMISSION.
Source record 10180293 at NHTSANHTSA communication ID: 10178983
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to correct conditions of Engine Idle Unstable, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0011, P0014, P0016, P0017, P05CC and/or P05CE Set.
Source components: ELECTRICAL SYSTEM.
Source record 10178983 at NHTSANHTSA communication ID: 10207729
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update. Certain vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and repair vehicles that fail the inspection.
Source components: ENGINE · ENGINE AND ENGINE COOLING.
Source record 10207729 at NHTSANHTSA communication ID: 10178966
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin is to notify dealership personnel as well as providing the customer with the usage instructions from the owner manual, that in extreme cold weather (-18°C or less / 0°F or less), a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.
Source components: ENGINE AND ENGINE COOLING:COOLING SYSTEM · EQUIPMENT ADAPTIVE/MOBILITY · EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL.
Source record 10178966 at NHTSANHTSA communication ID: 10178974
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of Power Liftgate and/or Instrument Panel Cluster (IPC) Inoperative, No Audio, Malfunction Indicator Lamp (MIL) Illuminated - DTC P159F-00, U0184-00, U0198-00 and/or U1501-00 Set.
Source components: ELECTRICAL SYSTEM.
Source record 10178974 at NHTSANHTSA communication ID: 10178346
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
Source components: ELECTRICAL SYSTEM.
Source record 10178346 at NHTSANHTSA communication ID: 10178338
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates a work around when only 11 digit PUN (Part Unique Number) is seen on Service Solenoid Body Assembly.
Source components: STRUCTURE.
Source record 10178338 at NHTSANHTSA communication ID: 10178329
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates specific directions for the application of room temperature vulcanizing (RTV) sealant to the engine Lower Crankcase Extension during engine oil pan installation.
Source components: ENGINE AND ENGINE COOLING.
Source record 10178329 at NHTSANHTSA communication ID: 10178285
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides repair information to correct a customer concern of check engine lamp illuminated, DTC P159F 00 set, No Audio.
Source components: ELECTRICAL SYSTEM · EQUIPMENT.
Source record 10178285 at NHTSANHTSA communication ID: 10177362
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update - The gear shift lever may have a detent feel between Park and Reverse caused by the fastening bolt that is not fully seated and contacting the shifter housing. Dealers are to inspect the detent feel of the transmission range selector lever and replace the select cable if necessary.
Source components: POWER TRAIN.
Source record 10177362 at NHTSANHTSA communication ID: 10177361
NHTSA source summary · Original PDF not reviewed by Recallfolio
SUB - Certain 2020-2021 Buick Encore GX and 2021 Chevrolet Trailblazer vehicles may have a condition where the camshaft actuator oil control valve (OCV) center bolt could stick or bind. If this were to happen, it could cause a MIL light to illuminate on the dash (Service Engine Soon), setting diagnostic trouble codes (DTC?s) P0011 or P0014, the engine could run rough and have reduced power. Dealers will inspect for these DTC?s that could have been set by this condition, and pass or fail based on results.
Source components: ENGINE · EQUIPMENT · EQUIPMENT ADAPTIVE/MOBILITY.
Source record 10177361 at NHTSANHTSA communication ID: 10178317
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer a testing procedure to isolate a potential Engine Oil Pump Switching issue.
Source components: ELECTRICAL SYSTEM · ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PUMP · FUEL SYSTEM, GASOLINE.
Source record 10178317 at NHTSANHTSA communication ID: 10177355
NHTSA source summary · Original PDF not reviewed by Recallfolio
Service Update - On certain vehicles, the engine oil pump may be stuck due to foreign material, and diagnostic trouble codes (DTC) P0521, P06DE, P06DD could be set. Dealers are to perform the engine oil pump screening test and if necessary, replace the oil pump.
Source components: ENGINE · FUEL SYSTEM, GASOLINE.
Source record 10177355 at NHTSANHTSA communication ID: 10178276
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to locate and fix a possible leak in the roof area due to missing sealant.
Source components: STRUCTURE.
Source record 10178276 at NHTSANHTSA communication ID: 10178277
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin provides Information on Proper Liftgate Adjustment.
Source components: STRUCTURE:BODY:HATCHBACK/LIFTGATE:SUPPORT DEVICE/STRUT.
Source record 10178277 at NHTSANHTSA communication ID: 10178275
NHTSA source summary · Original PDF not reviewed by Recallfolio
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.
Source components: POWER TRAIN.
Source record 10178275 at NHTSANHTSA communication ID: 10176612
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin provides a procedure to replace the transmission auxiliary pump to correct a condition of start/stop inoperative, MIL illuminated w/DTC P2797.
Source components: EQUIPMENT ADAPTIVE/MOBILITY · POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM).
Source record 10176612 at NHTSANHTSA communication ID: 10176328
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer that if the service AWD (All-Wheel Drive) or AWD (All-Wheel Drive) Off messages are on and there is a history DTC of C15C9 SYM02 set then no repairs are to be made at this time, a software issue was found and Engineering is working on a permanent solution. If the DTC is setting current then published diagnosis needs to be followed.
Source components: STRUCTURE.
Source record 10176328 at NHTSANHTSA communication ID: 10176324
NHTSA source summary · Original PDF not reviewed by Recallfolio
This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
Source components: AIR BAGS.
Source record 10176324 at NHTSANHTSA communication ID: 10176817
NHTSA source summary · Original PDF not reviewed by Recallfolio
SUB - Certain 2021 model year Chevrolet Trailblazer, and 2020-2021 model year Buick Encore GX vehicles, equipped with a continuously variable ratio (CVT) transmission, may experience reduced launch performance during a quick exit from a stop/start event. DTC?s P0746 and P0776 may also set illuminating a Check Engine Light. The main pump in the CVT has a priming delay under certain conditions. Dealers will reprogram the transmission control module (TCM) with updated software.
Source components: ELECTRICAL SYSTEM:SOFTWARE · ENGINE · POWER TRAIN.
Source record 10176817 at NHTSANHTSA communication ID: 10176607
NHTSA source summary · Original PDF not reviewed by Recallfolio
This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
Source components: ENGINE · EQUIPMENT ADAPTIVE/MOBILITY · FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM.
Source record 10176607 at NHTSANHTSA communication ID: 10175854
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.
Source components: EQUIPMENT ADAPTIVE/MOBILITY · EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL.
Source record 10175854 at NHTSANHTSA communication ID: 10174868
NHTSA source summary · Original PDF not reviewed by Recallfolio
The Preliminary Information communication advises the technician that there is a part restriction for the 1.2L LIH engine. The dealer technician is advised to call the GM Product Quality Center for further assistance.
Source components: ENGINE AND ENGINE COOLING.
Source record 10174868 at NHTSANHTSA communication ID: 10174867
NHTSA source summary · Original PDF not reviewed by Recallfolio
The Preliminary Information communication advises the technician that there is a part restriction for the 1.3L L3T engine. The dealer technician is advised to call the GM Product Quality Center for further assistance.
Source components: ENGINE AND ENGINE COOLING · EQUIPMENT.
Source record 10174867 at NHTSANHTSA communication ID: 10175763
NHTSA source summary · Original PDF not reviewed by Recallfolio
This informational bulletin advises of normal engine noise produced by the engine.
Source components: ENGINE.
Source record 10175763 at NHTSA