300KMile ratingNo known defect pattern for this model year
The 2021 GMC Sierra 2500HD is not on our list of model years with a widely reported mechanical or electrical problem. That is a point in its favour, not a clean bill of health — this car's own history still matters, so check the VIN report and get it inspected.
What owners of the 2021 Sierra 2500HD say
Owner reviews for this exact model year are the fastest way to find out what breaks, what it costs to fix and whether the car lives up to the spec sheet.
Partner links — Caboose may earn a commission if you buy through them, at no cost to you. It never affects which cars we list.
About this car
The GMC Sierra 2500HD is No. 17 on the Caboose longevity table: 17.2% of them reach 250,000 miles, against 5.4% of all vehicles. This 2021 GMC Sierra 2500HD Denali Crew Cab 4WD is listed at $50,147, about $2,167 below the CarGurus expected market price of $52,314. It has 91,902 miles and comes in White. Power comes from a 6.6L V8 Biodiesel with four-wheel drive. It is offered by Welborn Chevrolet of Rome in Rome, GA (franchise dealer).
Why it's a good buy
- 17.2% of GMC Sierra 2500HDs reach 250,000 miles — No. 17 of 52 on the Caboose table
- 108,098 miles of runway before 200,000
- 4% below market price ($2,167 savings)
- No widely reported defect pattern for this model year
- Leather Seats
- Sunroof/Moonroof
Features
Get it road-ready
The usual first-week purchases for a 2021 GMC Sierra 2500HD, from partners we trust.
Partner links — Caboose may earn a commission if you buy through them, at no cost to you. It never affects which cars we list.
Similar great deals
300KMile rating
300KMile rating
300KMile rating
300KMile rating
300KMile rating