2012 GMC Denali

Owner complaints

What owners report most

1. Unknown or other3
2. Air bags2
3. Structure2
4. Electrical system1
5. Engine1
6. Fuel/propulsion system1

Latest complaints

• Feb 11, 2021TN
  Air bags · Structure › Body · Unknown or other

  Dash cracks everywhere, all attachment points are cracking. No apparent reason other than using a un u.v protected plastic.

• Feb 19, 2019MS
  Unknown or other

  The dash has cracked above the instrument panel and by the air bag. unsure when it accorded. noticed it was making a sound and in 2 weeks has gotten much worse

• Sep 6, 2018WV60,000 mi
  Unknown or other

  Crack in passenger side of dashboard....vehicle was statioary

• Apr 4, 2018TN
  Structure › Body

  My dash IS cracking for no apparent reason. It's to a point now of needing replaced and has raised my safety concern for myself and passenger if I was to come involved in a crash by broken large plastic fragments.

• Sep 11, 2017AZ100,000 mi
  Electrical system · Engine · Fuel/propulsion system

  When the vehicle IS at 50 60 or any speed - the tachometer jumps and the car surges feels like it going to stop

• Jun 25, 2017GA82,000 mi
  Air bags

  Dash board has cracked around airbag. concerned that if there was a collision that tye airbag would explode and entire dash would explode with it

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 10239124This service bulletin provides information on Paintless Dent Repair Process.
• 10239103This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
• 10239102The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
• 10239101This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
• 10238190This service bulletin describes the U.S. Dealer Special Tool Loan Program process.
• 10237960This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
• 10237846This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air filter use.
• 10237841This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10237387This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
• 10237340This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
• 10235802This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10235799This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
• 10235798This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10235716This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
• 10235713This bulletin provides information on Warranty Administration Required Operating Procedures - 8 Points (U.S. Only).
• 10235561This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
• 10235398This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
• 10234621This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10234620This service bulletin provides information on proper use of floor mats.
• 10234619This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
• 10234144This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
• 10234141This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
• 10234110This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
• 10233835This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10233831This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10233830This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
• 10233829This service bulletin advises about the possible issues that may occur when using a scotch brite pad or highly abrasive disk on gasket sealing surfaces or reused parts.
• 10233338This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10232469This Warranty Administration bulletin provides policy information on Causal Part requirements for transactions submitted to GM for payment.
• 10232288This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 10232287This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10232283This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
• 10232275This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
• 10232143This warranty administration bulletin provides policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
• 10232136This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
• 10231519This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
• 10231518This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks.
• 10231302This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10228906This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
• 10228888This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

Every GMC Denali model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.