2026 Gmc SIERRA 2500 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
10 owner complaints analyzed
1 distinct recall campaigns
9,000 mi median reported failure mileage
Scope: 2026 model year. Data snapshot: . 1 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 3 of 10 complaints (30.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 3 | 30.0% |
| Steering behavior | 3 | 30.0% |
| Transmission and shifting | 1 | 10.0% |
| Engine operation | 1 | 10.0% |
| Electrical and battery issues | 1 | 10.0% |
| Fuel system concerns | 1 | 10.0% |
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 |
|---|---|
| Electrical System | 3 |
| Steering | 3 |
| Service Brakes | 2 |
| Tires | 2 |
| Engine | 1 |
| Fuel/Propulsion System | 1 |
| Power Train | 1 |
| Seats | 1 |
Electrical System: 3; Steering: 3; Service Brakes: 2; Tires: 2; Engine: 1; Fuel/Propulsion System: 1; Power Train: 1; Seats: 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 | 1 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (1). 9 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 |
|---|---|
| 2026 | 10 |
2026: 10
Pattern summary
Electrical System leads the component reports. Braking behavior appears in 3 complaint narratives. Steering behavior appears in 3 complaint narratives. Transmission and shifting appears in 1 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.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11734694 · 2026-04-29 (April 29, 2026)
Brand new delivery there was a noise that changes with engine RPM. It also changed with turning the steering wheel. The dealer diagnosed a bad power steering pump. Due to possible metallic contamination all related parts that are connected to the power steering pump including the HydroBoost brake assist are going to be replaced
Owner-reported narrative. Look up ODI 11734694 at NHTSA ↗
Owner report 11755350 · 2026-08-06 (August 6, 2026)
Ongoing issues with Steering pull to right, and brake pull to hard right when applying brakes, which also turns steering wheel to right upon application. Have to keep steering wheel towards left with constant pressure to go in straight line and when braking. Driver has to be aware of changing road conditions that could affect that. Multiple inspections at multiple dealers have found no obvious issues, and multiple alignments performed, with tires also being replaced have had no success in correcting issue. Front suspension starting to feel loos…
Owner-reported narrative. Look up ODI 11755350 at NHTSA ↗
Owner report 11760712 · 2026-08-30 (August 30, 2026)
Aug 14th, 9:49 pm - Vehicle was placed in park and driver got out. A few seconds later the vehicle started moving forward under its own power towards the driver who was now infront of vehicle walking foward away from vehicle. Passenger hopped over the driver seat to press on brake pedal to stop vehicle. At same time, driver turned around and noticed vehicle moving towards him. Passenger was able to stop vehicle but not before it ran off the driveway and into and over a recreational firepit area. Driver was on opposite side of this. Driver got i…
Owner-reported narrative. Look up ODI 11760712 at NHTSA ↗
Owner report 11737988 · 2026-05-15 (May 15, 2026)
I recently purchased my vehicle from Big Star Dealership in Baytown Tx. At a little over 1000 miles i was towing a camper. The vehicle stalled, fuel pouring from engine. It was towed and repaired due to fuel pump failure. At a little over 3000 miles the vehicle would not start. Dealership initially said water contamination then changed it and said gasoline contamination and now they say DEF contamination. The vehicle stalling the first time almost caused me to wreck the vehicle
Owner-reported narrative. Look up ODI 11737988 at NHTSA ↗
Owner report 11736469 · 2026-05-08 (May 8, 2026)
During normal use, the factory wireless phone charging pad in the center console overheated, produced visible smoke inside the cabin, and melted the charging surface area. No liquids or foreign metal objects were present. The phone was placed normally on the charging pad. The incident created a burning smell and visible damage to the interior trim. The system did not shut down before damage occurred. This appears to be a potential electrical or thermal safety failure in the factory-installed wireless charging system.
Owner-reported narrative. Look up ODI 11736469 at NHTSA ↗