Total Complaints
5 filings
GMC DENALI · model year
2014 GMC DENALI
5 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2014GMCDENALI carries 5 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2014 DENALI is fuel/propulsion system with 1 filings, followed by electrical system (1) and service brakes (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 2 investigation files overlapping the 2014 DENALI. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
5
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| FUEL/PROPULSION SYSTEM | 1 |
| ELECTRICAL SYSTEM | 1 |
| SERVICE BRAKES | 1 |
| ENGINE | 1 |
| ELECTRONIC STABILITY CONTROL (ESC) | 1 |
Recent Complaints
20200915ELECTRONIC STABILITY CONTROL (ESC)
THE STABILITY CONTROL LIGHT CAME ON AND IT WOULD NOT LET ME DRIVE IT JUST STOP IN THE ROAD
Mileage: 68,000
20191229ENGINE
WHILE DRIVING ON A CITY STREET THE 2014 GMC SIERRA 6.2 L V8 LOST POWER AND STARTED RUNNING ROUGH AS APPROACHING AN INTERSECTION. I WAS ABLE TO STOP, AND REVERSE THE VEHICLE AWAY FROM THE INTERSECTION, TO GET OUT OF TRAFFIC. THE ENGINE LIGHT WAS FLASHING AND THE TRUCK SHUT DOWN, IT WAS UNABLE TO RESTART. THE TRUCK HAD UNDER 60,000 MILES ON IT AT THE TIME OF THE FIRST INCIDENT. IT WAS TOWED TO A GM DEALER SHOP FOR REPAIR. THIS FIRST INCIDENT TOOK PLACE IN AUGUST OF 2019. THE ROCKER ARM AND EXHAUST SPRING HAD TO BE REPLACED IN THE #2 CYLINDER, THE CYLINDER HEAD HAD TO BE REBUILT WITH A NEW HEAD. IN ADDITION THEY REPLACED 4 FUEL INJECTORS. IN DECEMBER OF 2019, A SECOND INCIDENT HAPPEN WHILE DRIVING ON A CITY STREET, THE ENGINE STARTED RUNNING ROUGH, I WAS CLOSE ENOUGH TO MY HOUSE TO GET IT HOME, PARK IT AND IT WAS TOWED TO A A CERTIFIED GM DEALER SHOP FOR REPAIR. THIS TIME IT HAD 61,752 MILES ON THE VEHICLE, THE NUMBER 5 SPRING BROKE. IT IS AT THE SHOP WAITING ON SPRING REPLACEM
Mileage: 57,000
20190422SERVICE BRAKES
BRAKE FAILURE. THE BRAKE VACUUM PUMP FAILED. I MARKED THE FAILURE AS TODAY AS THE DEALERSHIP CONFIRMED THE FAILURE. THE FAILURE OCCURRED A MONTH OR SO AGO. IT DOES NOT HAPPEN ALL OF TIME.
Mileage: 75,138
20190110ELECTRICAL SYSTEM
BLIND SPOT SENSORS IN THE MORRORS ARE ALWAYS LIGHTING UP WITH NOTHING TO SET THEM OFF.GM SAYS THERE IS NO FIX AND THEY KNOW OF THIS PROBLEM WITH THE ACADIA
Mileage: 67,000
20180224FUEL/PROPULSION SYSTEM
CHECK ENGINE LIGHT CODE FOR DEF HEATER FAILURE. POSSIBLE LIMP MODE EFFECT IN TRAFFIC.
Mileage: 37,500
Compare 2014GMCDENALI to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 2014 GMC DENALI have?▼
The 2014 GMC DENALI has 5 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 2014 GMC DENALI?▼
The most-complained component for the 2014 GMC DENALI is FUEL/PROPULSION SYSTEM with 1 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and SERVICE BRAKES.
Is the 2014 GMC DENALI safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.