Used 2021 GMC Sierra 1500 Diesel Consumer Reviews
Used Sierra 1500 for sale
Love it!
Boyd Bowers, 11/09/2022
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
1 of 1 people found this review helpful
I have the Diesel engine and absolutely love it!
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Dangerous truck
Disappointed , 03/02/2024
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
1 of 1 people found this review helpful
I have a 2021 GMC Sierra 1500 Elevation with the 3.0 Duramax and I can’t even pass a golf cart without it going into limp mode. There is a terrible issue in the relay between Engine and Transmission that every time I try and speed up it throws a code stating low oil pressure and another about timing yet when I go and get it looked at there is no issue they can find and to go through a full diagnostic it would take 3-6 months for a diesel mechanic to get to and there will be no loaner given in the meantime (warranty still in effect). When I try and speak to a certified mechanic with GM they go silent about this engine. I cannot even let my wife drive my truck because it is such a danger. This issue happens 5-10 times per week. To get it back on road I have to disconnect the negative on the battery and reconnect and then it is fine until I try and pass someone or speed up to quick. The turbo is practically useless in this truck and the so called towing power does not exist beyond an empty trailer. I cannot in good faith even sell this truck to someone knowing that it has such a dangerous issue. I have spoken to several people with this same truck (minus the elevation package) and they say they are having same issues but not in such intervals as myself. My advice, STAY AWAY FROM 3.0 DURAMAX.
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2021 GMC Sierra 1500 for sale near you
Showing 3 of 157 listings
- Base Crew CabMSRP: $30,69545 mi away
- SLT Diesel Crew CabMSRP: $37,70030 mi away
- AT4 Crew CabMSRP: $45,3905 mi away
See all 157 listings
So much better than anything Ford has
Shane, 01/04/2023
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
1 of 1 people found this review helpful
The ride, technology package, the way the seat sits compared to ford. Large backseat 34 miles per gallon with the diesel. Love it! They'll never be another Ford in my driveway:-)
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Can't get parts
Roger, 12/01/2022
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
1 of 1 people found this review helpful
Almost a month now can't get fuel pump
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Did not get the GMC or Chevy 1500 truck
Ron, 06/18/2021
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 6.6 ft. SB (3.0L 6cyl Turbodiesel 10A)
12 of 53 people found this review helpful
I went to a few dealers. One dealer would not let me test drive the vehicle and said we have a few and take it or leave it. Others were nice, but did not have what I wanted. The chip thing shows we should make at least 50 percent of items here in the United States. As far as getting much off, forget about it, so not the right time to buy a vehicle.