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    1 out of 5 stars

    Broke down at 1,236 miles

    Let down, 01/16/2021
    2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
    51 of 58 people found this review helpful

    Bought a 2021 AT4 with 3.0L Duramax. Ordered it and waited 4 months for it to arrive. Love the ride & engine. Had to be towed to dealer with 1,236 miles due to a "transmission module issue." Been 3 days haven't heard back. Think transmission might've blown. Wouldn't go in reverse, would go into reverse position but wouldn't move. Engine power was reduced & check engine light came on. The 10 speed transmission was supposed to be solid.... be cautious

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    *The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details.

    5 out of 5 stars

    Very pleasing to drive.

    Howard Beck, 10/13/2021
    2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
    8 of 8 people found this review helpful

    Have 6,000 miles on and not a single problem. Handles great. Love the multi-pro tailgate, makes it so easy to use truck. interior is easy to use all to options. Have the 3.0L great power. Wish I could turn off completely the auto off feature.

    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
    5 out of 5 stars
    Reliability
    5 out of 5 stars
    Value
    5 out of 5 stars
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    5 out of 5 stars

    Great Pickup

    Laban, 05/01/2021
    updated 11/07/2022
    2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
    9 of 14 people found this review helpful

    GMC six cylinder deiseal is smooth, great towing, fuel efficient vehicle. But with Diesel $1.00 to $1.25 more than Regular gas - I am hurting.

    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
    5 out of 5 stars
    Reliability
    5 out of 5 stars
    Value
    5 out of 5 stars
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    At a Glance:
    • 5 Colors
    • 1 Trim
    • 5 Packages
    • $31,200starting MSRP
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    *The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Some colors are extra cost. See dealer for details.

    1 out of 5 stars

    New truck big burner out pile of trash

    Mark Dupont, 04/18/2021
    2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
    14 of 26 people found this review helpful

    Bought a 2021 GMC Sierra sky. All the bells and whistles. Had it 5 months with 3400 miles. Came back from store and parked it in driveway. Went in the house and my wife said your truck is smoking. Ran out and flames under hood. Five minutes later entire front end of truck engulfed in flames. Total loss. I was just lucky I was out of it. No indication of problems while driving.

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

    GMC AT4 Diesel CarbonPro Series

    Scott M, 03/16/2021
    2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
    9 of 17 people found this review helpful

    You can't get a truck with more luxury, more add-ons, better mileage, and power. This thing rocks and overall, cannot be beat. I love it and I have only had it a couple of days. I cant wait to put it through it paces and see what else this thing can do. Thanks to Nyle Maxwell GMC located in Round Rock, Texas for an amazing on an amazing truck.

    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
    5 out of 5 stars
    Reliability
    5 out of 5 stars
    Value
    5 out of 5 stars
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