2015 Gmc SIERRA DENALI: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
22 owner complaints analyzed
0 distinct recall campaigns
47,800 mi median reported failure mileage
Scope: 2015 model year. Data snapshot: . 19 complaints include usable failure mileage.
Most common problems
Service Brakes is the most frequently named component, appearing in 7 of 22 complaints (31.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 10 | 45.5% |
| Transmission and shifting | 3 | 13.6% |
| Electrical and battery issues | 2 | 9.1% |
| Steering behavior | 2 | 9.1% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 7 |
| Power Train | 5 |
| Electrical System | 3 |
| Unknown Or Other | 2 |
| Air Bags | 1 |
| Engine | 1 |
| Engine And Engine Cooling | 1 |
| Fuel System, Diesel | 1 |
Service Brakes: 7; Power Train: 5; Electrical System: 3; Unknown Or Other: 2; Air Bags: 1; Engine: 1; Engine And Engine Cooling: 1; Fuel System, Diesel: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 4 |
| 25,000 to 49,999 | 7 |
| 50,000 to 74,999 | 6 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 1 |
Under 25,000: 4; 25,000 to 49,999: 7; 50,000 to 74,999: 6; 75,000 to 99,999: 1; 100,000 to 149,999: 0; 150,000 and above: 1
25,000 to 49,999 miles has the most reports with usable mileage (7). 3 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2017 | 6 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 3 |
| 2024 | 1 |
| 2025 | 2 |
2017: 6; 2018: 6; 2019: 4; 2020: 3; 2024: 1; 2025: 2
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 10 complaint narratives. Transmission and shifting appears in 3 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10994001 · 2017-06-08 (June 8, 2017)
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. WHILE OPERATING THE VEHICLE, RAIN WATER FROM THE ROOF MOUNTED ANTENNA LEAKED INTO THE PASSENGER SIDE CABIN. THE CONTACT INDICATED THAT THE WATER CAUSED THE ELECTRONICS IN THE VEHICLE TO MALFUNCTION, SUCH AS THE ONSTAR AND NAVIGATION SYSTEM. THE VEHICLE WAS TAKEN TO THE DEALER (RON SONET BUICK/GMC IN LAKE CITY, FLORIDA) WHERE IT WAS DIAGNOSED THAT THE ANTENNA NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 15,000.
Owner-reported narrative. 15,000 miles reported. Look up ODI 10994001 at NHTSA ↗
Owner report 10994628 · 2017-06-13 (June 13, 2017)
BAD WELD ON HVAC CONDENSER. WAITING 7+ WEEKS FOR NATIONAL BACK-ORDERED REPLACEMENT PART. WHY IS THERE NO RECALL SINCE CLEARLY THIS IS A MAJOR SPILL?
Owner-reported narrative. 52,000 miles reported. Look up ODI 10994628 at NHTSA ↗
Owner report 11002748 · 2017-07-03 (July 3, 2017)
MY GMC 2015 DIESEL DURIMAX TRUCK HAD THE ENGINE LIGHT TURN ON AND SAID EMISSION NEEDS SERVICED. IT PROCEEDED TO CUT MY TRAVELING SPEED FROM 75 MPH TO 65 MPH TO 55 MPH. I MADE IT TO DENVER COLORADO BARELY WITHOUT THE TRUCK FALLING TO 4 MPH. I WENT YESTERDAY TO HAVE IT SERVICED. THEY SAID THAT THEY FIXED IT STILL UNDER POWERTRAIN WARRANTY. I DROVE AWAY TO GO BACK TO TEXAS 700 MILES OF HIGHWAY HOME. I DROVE AND THE EXACT SAME PROBLEM HAPPENED AGAIN. I'M WAS ON A HIGHWAY AT THIS POINT WITH HEAVY HIGHSPEED TRAFFIC IN THE MIDDLE OF NOWHERE WHERE TH…
Owner-reported narrative. 46,000 miles reported. Look up ODI 11002748 at NHTSA ↗
Owner report 11029809 · 2017-10-16 (October 16, 2017)
2015 GMC SIERRA. CONSUMER WRITES IN REGARDS TO SENSING AND DIAGNOSTIC MODULE SAFETY RECALL. *LD THE CONSUMER REQUESTED TO BE ADVISED OF THE OPTIONS OF HAVING A RECALL COMPLETED ON AN ISLAND. UPDATED 10/16/2017*JS
Owner-reported narrative. Look up ODI 11029809 at NHTSA ↗
Owner report 11033181 · 2017-10-13 (October 13, 2017)
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. THE CONTACT STATED THAT THE VEHICLE EXHIBITED NUMEROUS ELECTRICAL FAILURES. THE FAILURE CAUSED THE STEERING WHEEL TO LOCK, THE BRAKE SYSTEM NOT TO ENGAGE, AND THE INSTRUMENT PANEL AND ALL OTHER ELECTRICAL SYSTEMS IN THE VEHICLE NOT TO OPERATE NORMALLY. THE VEHICLE WAS TAKEN TO MARTY'S BUICK GMC (5 COLLECTION WAY, KINGSTON MA, 02364, [phone removed]) SEVERAL TIMES FOR THE FAILURE. THE CONTACT STATED THAT THE DEALER REPLACED WIRES, BUT THE FAILURE WAS NOT CORRECTED. THE CONTACT DID NOT KNOW THE NAME …
Owner-reported narrative. 15,000 miles reported. Look up ODI 11033181 at NHTSA ↗
Owner report 11055771 · 2017-12-20 (December 20, 2017)
TL* THE CONTACT OWNS A 2015 GMC SIERRA DENALI. WHILE DRIVING APPROXIMATELY 60 MPH, THE STEERING LOST POWER AND THE POWER STEERING WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TOWED TO THE DEALER (SEWELL BUICK GMC OF DALLAS IN DALLAS, TX, PHONE NUMBER: [phone removed]) WHERE A DIAGNOSTIC TEST WAS PERFORMED. THE CONTACT WAS NOT GIVEN THE RESULTS OF THE TEST. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED TO PAY A PERCENTAGE OF THE REPAIR COSTS. THE FAILURE MILEAGE WAS 39,900. *BF UPDATED 8/28/18*JB
Owner-reported narrative. 39,900 miles reported. Look up ODI 11055771 at NHTSA ↗
Owner report 11066885 · 2018-02-04 (February 4, 2018)
HARD BRAKE PEDAL. AT LOW SPEED THE BRAKE PEDAL GETS REALLY HARD AND MAKES IT HARD TO STOP THE TRUCK. PEDAL HAS TO GET PUSHED REALLY HARD TO BARELY STOP FROM HITTING OTHER VEHICLES. ONGOING ISSUE.
Owner-reported narrative. 56,000 miles reported. Look up ODI 11066885 at NHTSA ↗
Owner report 11098024 · 2018-05-25 (May 25, 2018)
STARTING THE VEHICLE I'M PUTTING THE TRUCK IN REVERSE, THE TRUCK LUNGES BACKWARDS. ALSO A VIOLENT JERK OF THE VEHICLE HAPPENS. THIS HAPPENS A MAJORITY OF THE TIME. PUTTING THE VEHICLE INTO GEAR TO DRIVE I HAVE A VIOLENT JERK AND A LOUD NOISE. THE TRUCK DOES NOT LUNGE FORWARD WHEN PLACING THE TRUCK INTO DRIVE. THIS HAPPENS A COUPLE OF TIMES A DAY. THIS IS NOT AN ISOLATED INCIDENT.
Owner-reported narrative. 55,000 miles reported. Look up ODI 11098024 at NHTSA ↗
Recall history
0 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
No recall campaigns are recorded in this snapshot.