Heavy-Duty Pickup Truck · 2500HD & 3500HD
2027 GMC Sierra
HD
Built for the Jobs That Count.
The 2027 GMC Sierra HD carries over a proven platform that can tow up to 36,000 lbs and haul over 7,700 lbs of payload — with the Duramax diesel or the 6.6L gas V8. A complete HD redesign is coming for 2028, but today's Sierra HD is the most capable truck Wheelers GMC has ever offered.
What's Confirmed vs. What to Expect
We track every piece of news on the 2027 GMC Sierra HD so you don't have to. Here's the honest breakdown.
- 2500HD and 3500HD carry over for 2027 — minimal changes
- 6.6L Duramax V8 diesel: 470 hp, 975 lb-ft torque
- 6.6L gas V8 (L8T): 401 hp, 464 lb-ft torque
- 3500HD maximum tow: up to 36,000 lbs (5th wheel / gooseneck)
- 2500HD maximum payload: up to 3,979 lbs
- Complete HD redesign planned for 2028 model year
- Minor equipment and package adjustments for 2027
- Possible trim content or color updates
- No structural changes to the HD platform
This page updates as GMC releases official information. Last updated: April 2026.
Don't Want to Wait? We Have Inventory Now.
Browse our current GMC inventory in Wisconsin Rapids — or get on the list for your 2027 GMC Sierra HD and we'll reach out the moment it's available.
2027 GMC Sierra HD Trim Levels
Here's the expected trim structure for the 2027 GMC Sierra HD — updated as GMC releases official information.
- Gas V8 standard / Duramax diesel available
- Work truck interior trim
- Severe-duty suspension available
- Up to 36,000 lb towing (3500HD gooseneck)
- Heated front seats available
- Safety alert seat and driver alerts
- Bose audio available
- Chrome exterior appearance packages
- Rancho monotube shocks
- All-terrain tires standard
- AT4 exclusive dark exterior trim
- Maximum ground clearance for HD
- 6.6L Duramax diesel standard
- Heated and ventilated front seats
- Denali exclusive exterior
- 13.4-inch diagonal GMC Infotainment
Trim details based on expected carry-over or announced structure. Official features and pricing confirmed at GMC reveal.
What Powers the 2027 GMC Sierra HD
Here's what's confirmed and what industry reporting tells us to expect from the engine lineup.
- Standard on Denali, optional on other trims
- Best diesel torque in the heavy-duty pickup class
- Allison 10-speed automatic transmission
- Up to 36,000 lbs towing (3500HD gooseneck)
- Standard engine across most Sierra HD trims
- 6-speed automatic transmission
- Proven reliability in fleet and commercial use
- Up to 22,500 lbs towing when equipped (2500HD)
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2027 GMC Sierra HD FAQ
Straight answers to the questions buyers are asking right now.
We'll Keep You Updated Every Step of the Way
This page evolves as GMC releases information. Here's where things stand today.
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The 2027 GMC Sierra HD specifications, features, trim levels, pricing, and availability described on this page are based on GM official statements, credible industry reporting, and manufacturer filings as of April 2026. All details are subject to change without notice. Wheelers GMC makes no guarantee of specific availability or features at time of production. This page will be updated as GMC releases official information. ©2026 Wheelers GMC — Wisconsin Rapids, WI.