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What 34 owners told NHTSA about the 2020 GMC Yukon Denali

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (34)Transmission & drivetrain (14)Engine (10)Brakes (3)Electrical system (2)Fuel system (2)Backup camera & sensors (1)Driver assistance (1)Electronic Stability Control (esc) (1)Engine & cooling (1)Seat belts (1)

1 of 34 complaints match · Electronic Stability Control (esc) · clear filters

Feb 5, 2020Electronic Stability Control (esc)

LINE KEEP ASSIST NOT WORKING PROPERLY. ASSISTANCE SYSTEMS FOR PARKING OR BACKING NOT WOKING PROPERLY. LANE CHANGE ALERT NOT WORKING PROPERLY

NHTSA ODI 11307294

Working with the data? Download all 34 complaints as CSV · fetched from NHTSA July 21, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 GMC Yukon Denali verdict →