Apr 27, 2020Lights
HID HEADLIGHTS FLICKER/SHAKE WHEN DRIVING OVER ANY SIZE BUMP, OR WHEN YOU CLOSE THE VEHICLE DOOR.
NHTSA ODI 11322479
Home · 2019 GMC Sierra Denali · Complaints
What 26 owners told NHTSA about the 2019 GMC Sierra 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 (26)Crash / fire / injury (1)Brakes (8)Steering (7)Electrical system (5)Electronic Stability Control (esc) (5)Engine (4)Transmission & drivetrain (4)Lights (2)Backup camera & sensors (1)Body & structure (1)Engine & cooling (1)
2 of 26 complaints match · Lights · clear filters
Jul 27, 2019Lights
THE HEADLIGHTS FLICKER VIOLENTLY WHEN DRIVING AT ANY SPEED. ACCORDING TO THE DEALER THE ISSUE IS NORMAL. IT IS VERY DISTRACTING TO DRIVE AT NIGHT AND LIKELY DISTRACTING ON COMING TRAFFIC. THE TRUCK NOW HAS 13K MILES AND HAS GOTTEN WORSE TO THE POINT WE DON'T DRIVE IT AT NIGHT.
NHTSA ODI 11235230
Working with the data? Download all 26 complaints as CSV · fetched from NHTSA July 20, 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 2019 GMC Sierra Denali verdict →