General Motors, LLC (GM) is recalling certain 2024 Cadillac Lyriq, Chevrolet Blazer EV, Chevrolet Silverado EV, GMC Hummer EV SUV, and GMC Sierra EV vehicles. The electric motors in the rear drive units may have insufficiently insulated wires that can contact each other, resulting in a loss of drive power.
Risk and remedy
Risk
A loss of drive power increases the risk of a crash.
Remedy
Dealers will replace the rear drive unit, free of charge. Owner notification letters were mailed May 16, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020; Cadillac customer service at 1-800-458-8006; Hummer customer service at 1-800-732-5493; or GMC customer service at 1-800-462-8782. GM's number for this recall is N242447080.
Automatic Emergency Braking engages when no object is present to hit. This has happened twice at lower speeds (roughly 20-30 mph). Parked cars present on side of road. Dangerous to driver and passengers as well as anyone behind the vehicle. Dealer hasn’t yet inspected the vehicle but that is pending scheduling.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
11012020This Preliminary information communicates ordering process for the frontand reardrive units are onrestriction for all listed EV vehicles for engineering review.
11012017This Preliminary information communicates the request that engineering it looking to get data from these vehiclesbefore any work is being performed.
11012004This Preliminary information communicates to the field about a false DTC that is setting and how to address the issue.
11012003This service bulletin provides a service procedure to correct customer concerns of Air Conditioning (A/C) Not Working and/or Blows Warm Air.
11011996This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
11011961This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
11011955This service bulletin provides information on High Voltage Drive Motor Battery - TAC Approval and Exchange Program for BrightDrop, Chevrolet Silverado EV, and GMC Sierra EV, HUMMER EV/SUV.
11011944This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
11011896This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
11011890This Preliminary information communicates A diagnostic tip from root causing DTC: C1197 caused by a pinched air inlet hose to the suspension compressor air leveling system.
11011885This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed overthe air update.
11011872This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
11011870This technical bulletin provides repair information to correct a customer concern of Passenger Side Windshield A-Pillar Speaker Grill Cover Falling Off/Loose/Not Flush.
11011868This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
11011860This service bulletin provides information for dealers/technicians on Vehicle Wide Programming Instructions.
11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
11011801Service Update. On certain vehicles, the 12V battery negative cable was erroneously labeled with a First Responder Emergency Cut Loop label. Dealers are to remove the First Responder Emergency Cut Loop label from the 12V battery negative cable.
11011776This Preliminary information communicates how to properly relearn the e-Trunk if it has lost it's learn.
11011709This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
11011704This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures.
11011700Customer Satisfaction Program - Certain vehicles may have been built with a Serial Data Gateway Module (SDGM) that is incompatible with the vehicles software. Dealers will replace the SDGM.
11011694This Preliminary information communicates Thus the active safety systems maybe inoperable and to perform a module reset to correct.
11011693This Preliminary information communicates how to recover the Image Processing Module.
11011682This Preliminary information communicates recovery procedure after return to dealer message.
11011484This Preliminary information communicates how to repair the rear swing gate access button that is stuck
11011476This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed overthe air update.
11011475This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
11011452This Preliminary information communicates the request that engineering it looking to get data from these vehiclesbefore any work is being performed.
11011434This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.
11011431This Preliminary information communicates adiagnostic tip when experiencing an error when trying to perfom a trim height learn or review pressure data in GDS
11011406This Preliminary information communicatesa "Forward Collision System Reduced" message displayed on the DIC when theForward Automatic Braking has been set to the "Alert" setting. This is normal when theFAB has been set to "Alert".
11011359This Preliminary information communicates ordering process for the frontand reardrive units are onrestriction for all listed EV vehicles for engineering review.
11011230This service bulletin provides information on Radio Software release Version Z172.6 Multiple Updates for IOK to correct customer concerns of radio software issues.
11011216This Preliminary information communicates to the field on a diagnostic tip for a Service Door Latch message and checking the inside door handle cable to make sure ift is fully engaged
11011183This Preliminary information communicates recovery procedure after return to dealer message.
11011157This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
11011120This technical bulletin provides a procedure to correct the condition of Trailer Brake Disabled and/or DTC C1114 Stored During Pulling a Trailer with a Battery, Generator or Solar Charger.
11010901This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
11010830This technical bulletin provides repair information to correct a customer concern of SuperCruise Dropping Out After Driving 3060 Seconds and/or Service Driver Assist Message Illuminated with DTCs U1626, U3000, and/or B2BA1.
11010729This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
Every GMC Hummer EV Pickup model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.