2014 Gmc Sierra Denali problems, complaints & recalls
Most-reported problem areas: Service Brakes (3) · Wheels (1) · Vehicle Speed Control (1)
🧭 Reliability snapshot
Compared against other Gmc Sierra Denali model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (0)
No recalls on record for this model year (campaigns announced since 2010).
Service bulletins (389)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-04-01 · PIT3271Q · Service Bulletin/Repair Instructions
this preliminary information communicates information about how to determine if a wheel and tires size change is available.
Unknown Or Other 2026-03-09 · PIP6104 · Service Bulletin/Repair Instructions
this preliminary information communicates the steps on how to save a gds2 session log and upload to a technical assistance case in cx connect.
Unknown Or Other 2026-03-09 · PIP4902V · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-01-08 · PIP4902U · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Showing the 6 most recent of 389 bulletins. Search all of them free at nhtsa.gov.
What owners report
2021-01-05 · Exterior Lighting · 22,000 mi“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.…”
2020-11-23 · Air Bags · 99,320 mi“need a recall for air bags vehicle stationary…”
2020-06-22 · Vehicle Speed Control · 69,000 mi“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 tire…”
2020-05-28 · Service Brakes, Hydraulic:foundation Components:disc:caliper · 109,000 mi“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…”
2019-07-18 · Unknown Or Other“braking system failure at low speeds.…”
2019-06-28 · Service Brakes · 20 mi“when at slow speeds, brakes get hard and have to put a lot of pressure to stop the truck.…”
2019-03-16 · Service Brakes · 70,000 mi“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…”
2019-01-17 · Service Brakes · 46,000 mi“vacuum pump failure was noticed when parallel parking. after hitting brake several times they stopped working. took excessive amount of force to stop vehicle.…”
2018-08-10 · Unknown Or Other · 65,000 mi“ac condenser system failure, leaks; many gm owners are reporting this same exact issue.…”
2018-08-08 · Fuel/Propulsion System · 78,000 mi“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.…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.