Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2026 Sierra 2500 HD.
The 2026 GMC Sierra 2500 HD enters the current model year carrying a 1999–2026 complaint history in which it has logged just six owner complaints and one recall, with the Electrical System emerging as the top reported concern. That low complaint volume places the 2026 model near the bottom of the historical range, sitting well below the 2015 peak of 147 complaints and just above the 2024 low of one. For researchers, the implication is that the 2026 Sierra 2500 HD is currently one of the cleaner model years on record, with electrical issues representing the primary area to monitor.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 2026 GMC Truck Sierra 2500 HD dominate in one area — the electrical system, 2 of 6 reports (33%), well ahead of the next concern. None of this vehicle's 1 recall campaigns target the electrical system, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the electrical system pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 6 complaints on record, top 5 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 1 of 1 campaigns on record for this vehicle.
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Showing 5 of 146 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| PIT6473F | 2026-07-17 | Unknown Or Other | This PI was created to help avoid unnecessary front camera module replacements |
| PIT6532 | 2026-07-06 | Unknown Or Other | The purpose of this PI is to inform dealer technicians of a normal cab pressure relief… |
| PIT6531 | 2026-06-29 | Unknown Or Other | This preliminary information communicates an issue with aftermarket LED lighting causing… |
| PIT5544J | 2026-06-24 | Unknown Or Other | This Preliminary information communicates information on a hydraulic rush type noise from… |
| PIT5966F | 2026-06-23 | Unknown Or Other | This Preliminary information communicates an issue with an OTA pending message still… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.