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Used 2021 GMC Sierra 2500HD Double Cab Consumer Reviews

5.0 out of 5 stars
2 reviews

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    5 out of 5 stars

    Love Our 2500 HD Diesel

    Jake, 04/16/2022
    updated 12/12/2022
    2021 GMC Sierra 2500HD SLE 4dr Double Cab 4WD LB (6.6L 8cyl 6A)
    6 of 7 people found this review helpful

    We have no regrets with our 2021 GMC 2500 HD Diesel. The mileage is around 25 mpg on the highway which is excellent when not pulling a trailer. It obviously goes down when pulling our trailer, however the power & torque that the diesel puts our coupled with the 10 speed transmission is amazing & well worth it in my mind. We have cloth seats & find them very comfortable. Very spacious inside. Quiet ride. UPDATE: I absolutely love our 2021 2500HD 6.6 litre Diesel. It pulls our 30 foot travel trailer (7,000 lbs empty) like a dream. The 10 speed transmission is extremely smooth. I find the interior very roomy, comfortable and quiet, which is noticeable on longer road trips. Ours is the SLE model but with the Kodiak package, which adds lots of nice upgrades. I've always been a GM man so can't compare to Ford or Dodge but can't think of anything negative with our GMC.

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    5 out of 5 stars

    HI RIZE

    HI RIZE 1955, 03/16/2025
    2021 GMC Sierra 2500HD 4dr Double Cab 4WD SB (6.6L 8cyl 6A)
    0 of 0 people found this review helpful

    Good work horse,yet classy enough to go out on town, best of both worlds, always liked GMC when growing up walking by car lot ,trucks were sharp looking, great colors also

    Safety
    5 out of 5 stars
    Technology
    5 out of 5 stars
    Performance
    5 out of 5 stars
    Interior
    5 out of 5 stars
    Comfort
    4 out of 5 stars
    Reliability
    4 out of 5 stars
    Value
    4 out of 5 stars
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