NHTSA Complaint #11579498 — 2021 GMC SIERRA 2500 STRUCTURE:BODY

Complaint Details

ODI Number	11579498
Vehicle	2021 GMC SIERRA 2500
Component	STRUCTURE:BODY
Date of Incident	March 20, 2024
Date Filed	March 26, 2024
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	WI

Consumer Description

My tailgate unexpectedly open as I was driving down the road. (2021 GMC 2500 Denali Sierra) This was the second time this has happened and lost things driving down the road. (3 propane tanks and a small grill the first and then an air compressor the second time) Both times it happened I opened and closed the tailgate with the vehicle running. Both times I was unaware of tailgate opening and did not notice until I got home. The first time it happened I thought it was operator error but after this weekend, I looked into this and see there was a recall on it this month. I still felt it was necessary to report incidents.

Related Complaints for the 2021 GMC SIERRA 2500

Other STRUCTURE:BODY Complaints

#11568867 — January 30, 2024 — The tailgate latch is not waterproof, and opens on its own sometimes. this can allow things to fall out of your truck.

#11478289 — August 8, 2022 — Hit in the driver side tire, air bags didn’t release. Truck then went up in flames.

#11477615 — August 4, 2022 — when driving down the rode the center hood scoop blew off 0

Recent Complaints for the 2021 GMC SIERRA 2500

#11715295 — ENGINE — February 3, 2026 — 80,000 Miles, complete engine break down. 12,000 to repair

#11709159 — EXTERIOR LIGHTING — January 6, 2026 — My right headlamp/ turn signal assembly began flashing at random intervals. The high beam would come on and off rando...

#11703711 — POWER TRAIN — December 8, 2025 — Pulling into a driveway and the truck made a loud clunk and the check engine light, traction control light, and a red...

#11696338 — POWER TRAIN — October 29, 2025 — The contact owns a 2021 GMC Sierra 2500. The contact stated that while driving at 50 MPH, the contact was pulling a t...

#11692084 — SERVICE BRAKES — October 8, 2025 — 2021 GMC Sierra 2500HD 6.6L gas 6 speed automatic transmission W/4wd After a brake service job the vehicle will rand...