Used 2020 GMC Sierra 1500 Double Cab Consumer Reviews
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Junk
Willy Reyes , 09/05/2021
2020 GMC Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 8A)
4 of 5 people found this review helpful
2020 gmc with 6000 miles and now it doesn't start and I can't get GMC support to get it fixed, 3 weeks with out the truck and can't get gmc to help me out.
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My Sierra / 85,000 miles
Deep South GMC guy, 10/12/2024
2020 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 10A)
1 of 1 people found this review helpful
Overall, the best truck I’ve ever owned. There have only been a couple of issues. At about 70,000 miles I caught my first “check engine” light. This truck is immaculately maintained, driven very carefully. I shouldn’t be seeing the CE Light that soon, IMO. I took it to the dealer, it was a $1200 job (GM agreed to cover half, my part was $600) to replace two injectors. I was suspicious because the truck was running perfectly in every way and my fuel mileage was excellent. Well, about 3,000 later it comes on again. Diagnosed as two bad injectors. I decided to treat a tank of gas with Techron fuel treatment. The CE light went off with a day or two. That’s happened twice more since on about 5000 mile intervals. Treated again with Techron…light goes away. Again, truck cranks/idles/runs perfectly…great fuel mileage. I’m thinking it’s an issue with the diagnostic system itself but I’m no professional mechanic. My other issue is around glass quality. My windshield split one summer day when I got in and turned the A/C. The replacement windshield seemed to be a much better piece of glass and has had no issues for years. The side and rear glass water stains very badly. Can’t really be cleaned but the view from inside the truck is still quite good.
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Never better!!
Ron P, 10/22/2021
2020 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 10A)
1 of 1 people found this review helpful
Over 15000 miles and no problems! So far it's been a great truck!!
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Happy Camper
Yterencec, 05/08/2022
2020 GMC Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 8A)
0 of 0 people found this review helpful
All around great truck
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Great truck
Ronald Shoemaker , 11/06/2022
2020 GMC Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 8A)
0 of 0 people found this review helpful
Truck drives wonderful all added with truck is perfect. Happy that I got it!!!