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Consumer Reviews for the GMC Sierra 3500HD

Read recent reviews for the GMC Sierra 3500HD
Overall Consumer Rating
3.9 out of 5 stars50 Reviews
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2 out of 5 stars

Trailer issues

Mario, 09/12/2021
2020 GMC Sierra 3500HD
Extremely disappointed with my 2020 Denali 3500hd. I own 6 trailers and only 1 works with the "new" trailer integration system. I get trailer not connected display, brake lockup on connecting, flickering lights. Trailers work perfect on other rigs. GM dealership basically said to pound sand and update my trailers to work with their system.
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