Used 2021 GMC Sierra 3500HD Crew Cab Consumer Reviews
Used Sierra 3500HD for sale
Great truck for towing!
Nick Odenath, 09/02/2023
2021 GMC Sierra 3500HD AT4 4dr Crew Cab 4WD LB (6.6L 8cyl 6A)
1 of 1 people found this review helpful
This truck is a beast when it comes to towing our 12k lbs fifth wheel. It is comfortable for the family on long trips and the tech inside is great!
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Great 1 ton dually w/30K lb 5th wheel hitch.
Full-timer, 01/02/2025
2021 GMC Sierra 3500HD SLT 4dr Crew Cab LB DRW (6.6L 8cyl 6A)
0 of 0 people found this review helpful
Great road tractor, with 6.6L Duramax, 10 speed Allison and a comfortable Cowboy Cadillac. Plenty of towing capacity. Barely broke in with 49K miles since new in April of 2021. Sold my 5th wheel RV so no longer need the dually.
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- Performance
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- Reliability
- Value
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