Here Are The GMC Sierra HD Discount, Lease And Finance Deals In November 2025

During the month of November 2025, GMC Sierra HD offers include low-interest, long-term financing on the 2026 GMC Sierra HD, and $500 off.

Local market leases are available as well on both 2500 HD and 3500 HD configurations of the premium heavy-duty pickup truck.

Incentives remain available on the 2025 GMC Sierra HD.

GMC Sierra HD Deals

GMC Sierra HD deals in November 2025 include:

Purchase Offers:

2026 Sierra 2500 HD and 3500 HD

Financing Offers:

2026 Sierra 2500 HD and 3500 HD

4.9 percent APR for up to 84 months

Must finance with GM Financial

Lease Offers:

2026 Sierra 2500 HD Crew Cab, Standard Bed AT4 4WD with 6.6L V8 L5P turbodiesel Duramax engine

$1,100 per month for 48 months

Ultra low-mileage lease with 10,000 miles per year

$3,600 due at signing (after all offers)

$0 security deposit

Available New York City market area

2026 Sierra 3500 HD Crew Cab, Standard Bed Denali 4WD with naturally aspirated 6.6L V8 L8T gasoline engine

$1,007 per month for 48 months

Ultra low-mileage lease with 10,000 miles per year

$3,507 due at signing (after all offers)

$0 security deposit

Available New York City market area

The above GMC Sierra HD deals are valid through December 1^st, 2025.

GMC Sierra HD Pricing

Here are the 2026 GMC Sierra HD trim levels and their corresponding starting MSRPs, including a $2,595 destination freight charge:

Sierra 2500 HD

Sierra Pro – $49,295

SLE – $52,595

SLT – $67,295

Denali – $77,595

Denali Ultimate – $96,395

AT4 – $74,195

AT4X – $86,295

AT4X AEV Edition – $95,785

Sierra 3500 HD

Sierra Pro – $50,495

SLE – $57,295

SLT – $68,495

Denali – $78,695

Denali Ultimate – $99,795

AT4 – $75,395

About GMC Sierra HD

The 2026 GMC Sierra HD arrives with only minor updates over the 2025 model year, including the deletion of several RWD configurations and the addition of two new exterior paint options.

The standard powertrain offered across the Sierra HD range is the naturally aspirated 6.6L V8 L8T gasoline engine, which is rated at 401 horsepower at 5,200 rpm and 464 pound-feet of torque at 4,000 rpm. Optionally available is the 6.6L V8 L5P turbodiesel Duramax engine, which is rated at 470 horsepower at 2,800 rpm and an impressive 975 pound-feet of torque at 1,600 rpm. Both connect to the Allison-branded 10‑speed automatic transmission.

Pricing uncovered for the 2026 Sierra HD reveals it increasing $400 to $1,500 depending on trim level. That includes a $400 bump to the destination freight charge (DFC), making it now $2,595. The most expensive 2026 Sierra 2500 HD costs more than $112K for a fully optioned AT4X AEV Edition. Here is 2026 Sierra 2500 HD pricing with options and packages, and 2026 Sierra 3500 HD pricing with options and packages.

The online configurator tool is live for the 2026 Sierra HD.

Disclaimers

Must take delivery by December 1^st, 2025, unless specified otherwise.

See dealer for details.

Incentive for the United States of America, unless otherwise specified.

Some customers may not qualify for these GMC Sierra HD deals.

Offers not available with special finance, lease, and some other offers.

All offers are nationally available unless noted otherwise.

Additional discounts may be available in certain markets.