GROUNDWORK — 21V422000: Fuel supply lines may be improperly attached and seated GMC ACADIA and 2 other models: check the listed vehicles, the reported issue and the manufacturer remedy for 21V422000. Keep the official status and service answers in one private record. Campaign: 21V422000 Official record checked: 2026-10-19T20:40:25.646Z Official campaign: https://api.nhtsa.gov/recalls/campaignNumber?campaignNumber=21V422000 Official VIN lookup: https://www.nhtsa.gov/recalls LISTED VEHICLES (VIN confirmation required) 2021 GMC ACADIA 2021 CADILLAC XT6 2021 CADILLAC XT5 OFFICIAL REPORTED ISSUE General Motors, LLC. (GM) is recalling certain 2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The fuel supply lines may be improperly attached and seated. OFFICIAL REPORTED CONSEQUENCE Improperly attached and seated fuel supply lines may loosen or separate, causing a fuel leak and increasing the risk of a fire. OFFICIAL REPORTED REMEDY Dealers will inspect and replace fuel supply lines as necessary, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Cadillac customer service at 1-800-458-8006 and GMC customer service at 1-800-462-8782. GM's number for this recall is N212335590. OFFICIAL 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. OWNER PREPARATION Record an existing fuel-related symptom without opening fuel-system parts or deliberately running the vehicle out of fuel. REMEDY TIMING IN THE DATED SOURCE Confirm current remedy arrangements The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions. Current availability for your VIN: unconfirmed. YOUR SERVICE QUESTIONS 1. Does the manufacturer confirm that campaign 21V422000 applies to this VIN, including the report’s equipment and production restrictions? A matching model and year is only a starting point. The official lookup or manufacturer must establish the individual vehicle’s status. Discussion status / answer: __________ 2. What remedy, required parts or software, and appointment arrangements are currently available for this VIN, and which interim instructions apply? The source does not explicitly establish current remedy availability. Ask the manufacturer about the applicable remedy, required parts or software, appointment arrangements and any interim instructions. Discussion status / answer: __________ 3. Which fuel-system component or reading is covered, and what interim handling or transport instructions apply? Compare the answer with the reported component: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS. Discussion status / answer: __________ 4. If an inspection determines which work is needed, what was inspected, what was found, and which corrective work followed? Ask for the inspection result as well as the final action. A parts list alone may not describe an inspection-based remedy. Discussion status / answer: __________ 5. Which items in the reported replacement remedy for 21V422000 were replaced, and are they identified on the work order? Keep the replaced items and the campaign number together so that a later visit can distinguish recall work from other repairs. Discussion status / answer: __________ 6. What dated document records the remedy performed under 21V422000, and what should I do if the reported concern remains? Keep campaign completion and unresolved symptoms as separate questions. A saved worksheet or booked appointment does not establish a repair. Discussion status / answer: __________ OFFICIAL LOOKUP DECISIONS Not checked or unavailable: eligibility remains unconfirmed; use the official lookup or manufacturer. Campaign listed as open: confirm current instructions, availability and remedy arrangements. Campaign not listed as open: reconcile repair history and lookup coverage with the manufacturer if needed. A zero-open result does not diagnose symptoms. Work order records completed recall work: keep the exact campaign and dated remedy record; report unresolved symptoms separately. YOUR RECORD Check date: __________ Official lookup result: __________ Service arrangement: __________ Existing observation: __________ Questions and work-order notes (no VIN or plate needed): __________ LOOKUP LIMITS A model/year match does not establish VIN eligibility. The official lookup may omit completed recalls, some recent campaigns or recalls outside its coverage. The listed defect does not prove the cause of a symptom on your vehicle. This guide supports owner preparation and does not provide a repair procedure.