2014 GMC Sierra Denali
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
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Vehicles › GMC › Sierra Denali › 2014
These records cover every 2014 GMC Sierra Denali. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Owner complaints
14 complaints
What owners report most
Latest complaints
- Exterior lighting
Headlights are extremely dim making it difficult to see at night out in rainy conditions causing a huge safety problem when driving at night. Can barely see when making left or right hand turns as well causing a huge safety issue at night with pedestrians are in a dark crosswalk.
- Air bags
Need a recall for air bags vehicle stationary
- Power train · Suspension · Vehicle speed control
When driving at highway speed or accelerating the back of the truck will violently vibrate.at time it IS almost uncontrollable and becomes very hard to steer. I so I have researched this issue and it seems that there are many complaints about this exact issues with 2014 to 2019 chevy and GMC…
When driving at highway speed or accelerating the back of the truck will violently vibrate.at time it IS almost uncontrollable and becomes very hard to steer. I so I have researched this issue and it seems that there are many complaints about this exact issues with 2014 to 2019 chevy and GMC trucks. I just had the alignment done and brand new tires put on it the truck 6-22-20. Now the truck shakes even more then it did before. *tr
- Service brakes, hydraulic › Foundation components › Disc › Caliper
TL* the contact owns a 2014 GMC sierra denali. The contact stated that while driving she heard a squeaking noise coming from the brakes. The contact took the vehicle to an independent mechanic to be diagnosed. The contact was informed that the caliper and brake pads needed to be replaced after…
TL* the contact owns a 2014 GMC sierra denali. The contact stated that while driving she heard a squeaking noise coming from the brakes. The contact took the vehicle to an independent mechanic to be diagnosed. The contact was informed that the caliper and brake pads needed to be replaced after having it for a year. The vehicle was repaired. Neither the dealer nor the manufacturer were notified of the failure. The failure mileage was 109,000.*jb
- Unknown or other
Braking system failure at low speeds.
- Service brakes
When at slow speeds, brakes get hard and have to put a lot of pressure to stop the truck.
- Service brakes
If the brakes are pumped 2-3 times the peddle will become really firm and hard to press. When this occurs the truck will not stop. You have to stand on the brake pedal with both feet to get the truck to stop. Pretty unnerving for a 75K mike truck still under drivetrain warranty but not covered. I use this truck for work and hauling my kids. I don't like having my kids in this vehicle!
- Service brakes
Vacuum pump failure was noticed when parallel parking. After hitting brake several times they stopped working. Took excessive amount of force to stop vehicle.
- Unknown or other
Ac condenser system failure, leaks; many gm owners are reporting this same exact issue.
- Engine · Fuel/propulsion system
I started my truck and noticed a heavy smell of gasoline coming from the hvac vents. I stepped out of the vehicle and noticed a large puddle of (fuel) gasoline on the pavement and a constant drip of (fuel) gasoline coming from the rear of the motor. I proceeded to turn the vehicle off and contact my local gm dealer for assistance.
- Structure › Body · Unknown or other
Dash cracked at less than 26000 miles 4 years old
- Unknown or other
My truck IS shaking at speeds 65+mph. I recently had my front end alligned and tires rebalanced still the same shaking IS occuring. It IS to the point that it IS uncomfortable to drive and dangerous.
- Air bags · Structure › Body
While detailing my truck on october 30, 2017 I discovered a crack on the dash about an inch and a half long running from the top left of the airbag cover towards the defroster vent . Took the vehicle in for servicing on october 31, 2017 and they stated to contact GMC cares that they were familiar…
While detailing my truck on october 30, 2017 I discovered a crack on the dash about an inch and a half long running from the top left of the airbag cover towards the defroster vent . Took the vehicle in for servicing on october 31, 2017 and they stated to contact GMC cares that they were familiar with this kind of problem. I called GMC they stated they were unaware of this problem on my make and model truck. They stated that I needed to contact the dealer and have the dealer contact GMC. The dealer told me to contact GMC. After doing a quick search on the internet I discovered this has been an ongoing problem that GMC has been aware of and IS not fixing and apparently this will only going to get worse as time goes by. The safety concern I have IS it so close to the airbag on the passenger side that if the airbag deploys in a crash will cause shards of broken dash to fly around in the cab injuring the passengers..
- Wheels
Chrome wheel corrosion. Critical location around valve stem creating air leak in valve stem. Could create low enough pressure to effect handling in emergency situation. Luckily mine was a slow leak, but the only fix IS wheel replacement at extreme cost and a lengthy replacement process leaving the…
Chrome wheel corrosion. Critical location around valve stem creating air leak in valve stem. Could create low enough pressure to effect handling in emergency situation. Luckily mine was a slow leak, but the only fix IS wheel replacement at extreme cost and a lengthy replacement process leaving the owner with choice of unsafe use, or losing use of the vehicle during the process. Initial first aid was to clean the stem hole of corrosion, use a sealant around the new valve stem, with no guarantee of a safe fix and an upcoming 2 week trip to upper ontario canada in fully loaded vehicle.
Defect investigations
NHTSA’s Office of Defects Investigation opened these reviews into vehicles including this one.
- Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant…
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf.Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see nhtsa.gov/recalls?nhtsaId=EA21002 -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
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.
- 11011989This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011900This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 11011805This Preliminary information communicates a GM part number forreflective high temperature heat or insulating tape when repairing wiring harnesses.
- 11011709This 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.
- 11011205This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- 11011119This Preliminary information communicates to dealers GM is working on a solution for outdated Apps
- 11010545This service bulletin provides information on key code security rules and information on GM keycode look-up applications (U.S).
- 11010544This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11010491This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.
- 11010490This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11010421This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- 11009764This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer Installed Accessories.
- 11009756This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
- 11009532This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11009531This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11009088This 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.
- 11009039This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
- 11009037This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
- 11008956This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
- 11008906This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
- 11008898The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
- 11007936This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11007935This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
- 11007721This service bulletin provides information on AGM batteries that require less frequent charging in storage.
- 11007208This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
- 11007155This informational bulletin advises the technician that the engine and related parts will be debited if found that the tech did not properly prepare the engine block from dirt and debris in bolt holes or if found that the block was damaged by the tech.
- 11007121This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
- 11007116This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11007115This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
- 11007095This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
- 11007091This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11006682This service bulletin provides information on a guide to help reduce repeat visits for the same customer concern.
- 11006670This 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.
- 11006644This Warranty Administration service bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
- 11006621Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
- 11006511This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
- 11006421GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
- 11006290This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
- 11006282This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
- 11006278This service bulletin describes the U.S. Dealer Special Tool Loan Program process.
Every GMC Sierra Denali model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.