{"id":"2021_chevrolet_silverado_3500hd","make":"Chevrolet","make_slug":"chevrolet","model":"Silverado 3500HD","model_slug":"silverado-3500hd","year":2021,"url":"/chevrolet/silverado-3500hd/2021/","pts":[],"configs":[],"vclass":"Heavy-duty pickup","segment":"Heavy-duty pickup","epa_certified":false,"recalls":[{"campaign":"24V797000","component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE","mfr":"General Motors, LLC","reported":"2024-10-24","owner_notified":"2024-12-12","units":463295,"summary":"General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines.  The transmission control valve may fail and cause the rear wheels to lock-up.","consequence":"Rear wheel lock-up can increase the risk of a crash.","remedy":"Dealers will install new transmission control module software, free of charge.  GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve.  Owner notification letters were mailed December 12, 2024.  Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020.  GM's number for this recall is N242454440.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to www.nhtsa.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"N242454440","initiated_by":"MFR","variants":[],"severity":"minor"},{"campaign":"24V060000","component":"LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH","mfr":"General Motors, LLC","reported":"2024-02-01","owner_notified":"2024-05-17","units":570434,"summary":"General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates.  The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.","consequence":"An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.","remedy":"Owners are advised to check that the tailgate is closed and latched before driving.  Dealers will replace the exterior touchpad switch assemblies, free of charge.  Owner notification letters were mailed May 17, 2024.  Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782.  GM's number for this recall is N232426400.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"N232426400","initiated_by":"MFR","variants":[],"severity":"high"},{"campaign":"21V758000","component":"SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE","mfr":"General Motors, LLC","reported":"2021-09-29","owner_notified":"2021-10-20","units":3241,"summary":"General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control modules (EBCM) replaced during vehicle assembly.  The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.","consequence":"Water in the BPMV may cause an electrical short circuit and increase the risk of fire.","remedy":"Owners are advised to park outside and away from other structures until the recall repair is completed.  Dealers will replace the BPMV assembly, free of charge.  Owner notification letters were mailed on October 20, 2021.  Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782.  GM's number for this recall is N212349181.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.","park_outside":true,"do_not_drive":false,"mfr_campaign":"N212349181","initiated_by":"MFR","variants":[],"severity":"critical"},{"campaign":"20V811000","component":"SEAT BELTS","mfr":"General Motors, LLC","reported":"2020-12-23","owner_notified":"2021-01-29","units":470,"summary":"General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles.  Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle.  If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.","consequence":"If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.","remedy":"GM will notify owners, and dealers will replace the suspect bolts, free of charge.  The recall began January 29, 2021.  Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020.  GM's number for this recall is N202322230.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"N202322230","initiated_by":"MFR","variants":[],"severity":"high"},{"campaign":"20V792000","component":"SEAT BELTS","mfr":"General Motors, LLC","reported":"2020-12-17","owner_notified":"2021-01-26","units":624216,"summary":"General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles.   The seat belt brackets may not be secured to the seat frame in the front-row center seating position.","consequence":"If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.","remedy":"GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge.  The recall began January 26, 2021.  Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020.  GM's number for this recall is N202314670.","notes":"Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.","park_outside":false,"do_not_drive":false,"mfr_campaign":"N202314670","initiated_by":"MFR","variants":[],"severity":"high"}],"recall_count":5,"critical_count":1,"park_outside":true,"do_not_drive":false,"score":58,"grade":"F","complaints":{"count":39,"crash":1,"fire":1,"injured":0,"deaths":0,"comps":[["Electrical System",12],["Power Train",7],["Structure",6],["Service Brakes",5],["Unspecified",5],["Latches/Locks/Linkages",5]],"by_year":{"2020":1,"2021":2,"2022":1,"2023":5,"2024":13,"2025":12,"2026":5},"excerpts":[["2024-12-17","Service Brakes","Driving home from work 7/1/2024 approx 5:15PM Smelled burning smell, no noise or dash lights, thought it was another car. 1 minute later, heard a thump from under hood and \"Charging System Failure\" came on dash. Decided to take to Chevy dealer, which was 5 minutes away. Within next 2 minutes steering failed. As I came \u2026"],["2024-11-27","Electrical System","Electrical components are failing in the tailgate lock/unlock mechanism. The tailgate goes up and down on its own while in park. It will also go up and down on its own after the truck is off and unattended This started happening about a week ago. It is available for inspection upon request and has not been inspected by\u2026"],["2024-11-15","Power Train","While towing my 5th wheel rv trailer, the rear wheels locked up numerous times while at highway speeds(60-70mph). Hope our didn't cause any internal/ structural damage to my trailer. Scheduled a service with the dealer(Gamblins Chevrolet, Enumclaw, WA) for them to diagnose. The dealer found no issue or cause. Left the \u2026"]]},"investigations":[{"action":"PE21010","component":"AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT","opened":"2021-04-09","closed":"2023-08-24","campaign":"","subject":"Air Bag Malfunction","summary":"On April 9, 2021, the Office of Defects Investigations (ODI) opened PE21-010 to investigate instances of air bag malfunction indicator light (MIL) illumination and potential for frontal air bag non-deployment in several vehicles manufactured by General Motors (GM). The vehicles included model year (MY) 2020 through 2021 CT4 and CT5 passenger cars, Sierra and Silverado trucks (1500/2500/3500 models), XT4 and MY 2021 Escalade, Suburban, Tahoe, Yukon SUVs.Technical Service Bulletin (TSB) 21-NA-005, issued in March 2021, addresses air bag MIL illumination with diagnostic trouble codes (DTCs) B0001-1B or B0012-0D. It cites rust particles in the connection terminal interface of the driver air bag "}],"ncap":[],"popularity":1,"headline":{"range":null,"mpg":null,"ncap":null,"complaints":39},"presskit_trims":[],"generated_at":"2026-09-11 06:27 UTC","sources":["EPA fueleconomy.gov","NHTSA recalls","NHTSA complaints","NHTSA NCAP","NHTSA investigations"]}