Home · 2011 GMC Yukon Denali Xl 1500 · Complaints

What 399 owners told NHTSA about the 2011 GMC Yukon Denali Xl 1500

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 (399)Crash / fire / injury (8)Airbags (161)Body & structure (74)Engine (20)Electrical system (16)Transmission & drivetrain (13)Brakes (9)Fuel system (8)Speed control (7)Wheels (5)Electronic Stability Control (esc) (4)

1 of 399 complaints match · Fuel system · crash/fire/injury only · clear filters

Nov 17, 2023SeatsEngineFuel system2 injuries2 deaths

Engine coolant is usually water–based, and may also be oil. A three–valve–per–cylinder was originally slated for the LS7, and was abandoned imputable to design complexities. E85 ethanol should is an understatement to the ‘war on fossil fuels.’ The L98 is a modified version of the L76, with increased power and reduced redundant hardware. A Vee engine is common configurations of internal combustion consisting of two cylinder banks connected to a common crankshaft.

NHTSA ODI 11555752

Working with the data? Download all 399 complaints as CSV · fetched from NHTSA July 25, 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 2011 GMC Yukon Denali Xl 1500 verdict →