New GMC Sierra 2500 HD for Sale in Hammond, LA
May not represent actual vehicle. (Options, colors, trim and body style may vary)
The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
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Ross Downing GMC has 50 new 2026 GMC Sierra 2500 HD trucks in stock as of October 7, 2026, with listed prices from $50,308. Shop Pro, AT4, AT4X, Denali and Denali Ultimate in the live inventory above, then use the trim guide, the towing and payload numbers, the Duramax vs gas comparison and this month's GMC deals below to narrow it down. Every listed price includes $478 in dealer fees, and the listings update daily from our store at 1301 S Morrison Blvd in Hammond.
- 50 in stocknew 2026 GMC Sierra 2500 HD trucks
- From $50,308lowest listed price today
- 48 with the Duramax2 with the 6.6L gas V8
- Up to 21,870 lbs.Crew Cab gooseneck towing, properly equipped
GMC Sierra 2500 HD Deals in Hammond, LA: Up to $14,022 Off MSRP
$14,022 off MSRP on a 2026 GMC Sierra 2500 HD Denali (stock 2-G9645), as of October 7, 2026. Ross Downing price $78,308, MSRP $92,330.
Or 4.9% APR for 36 or 48 months, 5.9% APR for 60 months, or 6.9% APR for 72, 75 or 84 months on select 2026 Sierra 2500 HD models through GM Financial for well-qualified buyers, plus no monthly payments until 2027, good through 11/2/2026.
Or lease a 2026 GMC Sierra 2500HD Crew Cab 4WD Denali for $799 a month for 36 months with $8,319 due at signing, GMC's lease offer for the Hammond area this month. 9 of this exact configuration are in stock.
APR offers are GM Financial programs for well-qualified buyers and usually replace some of the cash discounts rather than add to them; with deferred payments, finance charges still accrue from the date of financing. Lease: Ultra Low-Mileage Lease for well-qualified lessees through GM Financial: no security deposit, 30,000 miles over the lease with 25 cents a mile over that. Tax, title, license and dealer fees extra. Take delivery by 11/2/2026. Payments are for the configuration shown, MSRP $77,995; other trims and options change the payment. See every new GMC deal this month, get pre-approved online, or call 985-227-4018.
Inventory counts and prices above reflect this page's live listings as of October 7, 2026 and change as vehicles sell. 6 of the 50 listed are still in transit to our store; each listing shows its status. Listed prices include $478 in dealer fees (documentary and title conveyance fees) and exclude tax, title and license.
GMC Sierra 2500 HD for Sale Near You in Hammond, LA
Searching for a GMC 2500 for sale, a GMC Sierra 2500 HD dealer or a new GMC Sierra 2500 HD on the Northshore? This page is Ross Downing's live stock: 50 new 2026 GMC Sierra 2500 HD trucks at our Hammond store, with every trim, engine, color and price shown above. However you typed it, 2026 GMC Sierra 2500HD, GMC Sierra 2500HD 2026, GMC 2500 HD or GMC 2500 Denali, you are looking at the same trucks, and a call to 985-227-4018 gets one ready for a test drive.
GMC Sierra 2500 HD Trims at Ross Downing: Pro, SLE, SLT, AT4, AT4X, Denali and Denali Ultimate
GMC builds the 2026 Sierra 2500 HD in seven trims, and today our inventory holds 27 AT4, 9 Denali, 9 Denali Ultimate, 4 AT4X and 1 Pro. Every trim except the Denali Ultimate comes standard with the 6.6L gas V8, and the Duramax 6.6L turbo-diesel is standard on the Denali Ultimate and available on the rest. Regular and Double Cabs are offered on the Pro and SLE, and the AT4, AT4X, Denali and Denali Ultimate are 4WD Crew Cabs. Sierra 2500 HD colors in stock right now include Onyx Black, Summit White, Sterling Metallic, Glacier White Tricoat, Volcanic Red Tintcoat, Coastal Dune, Titanium Rush Metallic. Whether you searched GMC 2500 Denali, GMC 2500 AT4, GMC Sierra 2500 Denali or GMC 2500 Denali Ultimate, each trim is in the guide below and in the listings above when it is in stock.
GMC Sierra 2500 HD Pro
Ross Downing price from $50,308
The Sierra 2500 HD Pro is the work truck of the range, offered as a Regular Cab, Double Cab or Crew Cab.
- 6.6L gas V8 with an Allison 10-speed automatic: 401 horsepower and 464 lb-ft
- Trailering Package, trailering mirrors and an integrated trailer brake controller
- Best-in-class HD cargo bed volume and wireless Apple CarPlay and Android Auto, with the Duramax diesel available
1in stock at Ross Downing todayShop the 1 Pro in stock
GMC Sierra 2500 HD SLE
Not in stock today: call 985-227-4018 to order or check arrivals
The SLE brings the big screens to the work truck and adds Traction Select with Tow/Haul mode.
- 13.4-inch touchscreen and 12.3-inch digital Driver Information Center
- 17-inch machined aluminum wheels
- Available MultiPro Tailgate with KICKER audio, up to 13 camera views and the X31 off-road package with Rancho shocks and skid plates
0in stock todayAsk about the SLE
GMC Sierra 2500 HD SLT
Not in stock today: call 985-227-4018 to order or check arrivals
The SLT adds comfort for long workdays, with heated power seats and GMC's ProGrade Trailering System.
- 10-way power heated driver and front passenger seats with lumbar, plus a heated steering wheel
- ProGrade Trailering System with the In-Vehicle Trailering App
- 18-inch machined aluminum wheels, with ventilated perforated leather bucket seats and the MultiPro Tailgate available
0in stock todayAsk about the SLT
GMC Sierra 2500 HD AT4
Ross Downing price from $79,213
The AT4 is the off-road Sierra 2500 HD, a 4WD Crew Cab with the Off-Road Suspension Package.
- Twin-tube Rancho shocks, skid plates and 20-inch gloss-black wheels, with BFGoodrich off-road tires available
- Jet Black interior with Kalahari accents and heated and ventilated perforated leather front seats
- MultiPro Tailgate standard, with the Duramax diesel and a 15-inch Head-Up Display with off-road inclinometer available
27in stock at Ross Downing todayShop the 27 AT4 in stock
GMC Sierra 2500 HD AT4X
Ross Downing price from $90,878
The AT4X is the most capable off-roader in the Sierra HD range, a 4WD Crew Cab with a 6-foot-9-inch bed.
- 1.5-inch factory lift, Multimatic DSSV dampers, a rear electronic-locking differential and 35-inch Goodyear Territory MT tires
- 11.6 inches of ground clearance and a 31.6-degree approach angle
- Obsidian Rush full-grain leather, Vanta ash wood and 16-way power massaging front seats; AT4X AEV Edition with stamped-steel bumpers and 18-inch Salta wheels
4in stock at Ross Downing todayShop the 4 AT4X in stock
GMC Sierra 2500 HD Denali
Ross Downing price from $67,973
The Denali is the luxury Sierra 2500 HD, a 4WD Crew Cab with GMC's signature chrome grille, bumper and fascia.
- Authentic wood, patterned aluminum trim and Forge perforated leather
- 12-way heated and ventilated power front seats, a power sunroof and a Rear Camera Mirror
- 6.6L gas V8 standard, with the Duramax diesel and a 15-inch Head-Up Display available
9in stock at Ross Downing todayShop the 9 Denali in stock
GMC Sierra 2500 HD Denali Ultimate
Ross Downing price from $89,888
The Denali Ultimate tops the range, with the Duramax diesel as standard and a Vader Chrome grille.
- Duramax 6.6L turbo-diesel V8: 470 horsepower and 975 lb-ft
- Alpine Umber full-grain leather, Paldao wood and 16-way power massaging front seats
- 12-speaker Bose Premium Series sound, illuminated power assist steps and an auxiliary trailer camera
9in stock at Ross Downing todayShop the 9 Denali Ultimate in stock
In-stock counts reflect this page's live listings as of October 7, 2026 and change daily. Trim equipment is summarized from GMC's 2026 Sierra HD overview and trim pages on GMC.com, and trim images are courtesy of GMC. Ross Downing prices are the lowest listed price on this page for that trim, including $478 in dealer fees and excluding tax, title and license.
GMC Sierra 2500 HD Towing Capacity, Payload and Engines
Properly equipped, the 2026 GMC Sierra 2500 HD tows up to 22,390 pounds with a gooseneck or fifth-wheel hitch and up to 20,000 pounds with a conventional hitch, and it carries up to 4,049 pounds of payload. Two V8s are offered, both with an Allison 10-speed automatic: the 401-horsepower 6.6L gas V8 and the Duramax 6.6L turbo-diesel with 470 horsepower and 975 lb-ft of torque. Our Sierra 2500 HD stock today includes 48 with the Duramax 6.6L turbo-diesel V8, 2 with the 6.6L gas V8.
Towing and Payload, Properly Equipped
- Gooseneck or fifth-wheel: up to 22,390 pounds as a Regular Cab, 21,870 as a Crew Cab and 18,600 as a Double Cab
- Conventional hitch: up to 20,000 pounds as a Crew Cab, 17,900 as a Double Cab and 14,500 as a Regular Cab
- Maximum payload: 4,049 pounds for a Regular Cab, 3,863 for a Crew Cab and 3,848 for a Double Cab, with a GCWR of up to 30,000 pounds
- Crew Cab by trim: AT4 up to 21,190 pounds gooseneck and 3,524 pounds payload, Denali 19,900 and 3,812, Denali Ultimate 19,300 and 3,153, AT4X 18,000 gooseneck, 18,500 conventional and 3,304 payload
- Need a dually or more capacity? GMC rates the Sierra 3500 HD at up to 36,000 pounds of towing and 7,290 pounds of payload; call 985-227-4018 and we can order one
Engines and Trailering Tech
- 6.6L gas V8: 401 horsepower and 464 lb-ft, standard on every trim except the Denali Ultimate
- Duramax 6.6L turbo-diesel V8: 470 horsepower and 975 lb-ft with an exhaust brake, standard on the Denali Ultimate and available on all other trims
- Every 2500 HD has the Trailering Package and an integrated trailer brake controller; the SLE and up add Traction Select with Tow/Haul mode
- ProGrade Trailering System with the In-Vehicle Trailering App from the SLT up, up to 14 camera views including Transparent Trailer View, and Adaptive Cruise Control with trailering available
Towing, payload and engine figures are GMC's for the 2026 Sierra 2500 HD and 3500 HD, from the overview, trim pages, spec highlights and FAQ on GMC.com. Ratings depend on cab, bed, engine, hitch and equipment; check the specific truck before you tow.
Sierra 2500 HD Duramax vs Gas: Which Engine Fits Your Work?
Choose the Duramax 6.6L turbo-diesel V8 if you tow heavy and often: its 975 lb-ft of torque is more than double the gas V8's 464, and it adds 470 horsepower and an exhaust brake for more control when towing. Choose the 6.6L gas V8, standard on every trim except the Denali Ultimate, if your trailers are lighter and you would rather not pay for the diesel option. Both engines use the Allison 10-speed automatic. Today, 48 of our 50 Sierra 2500 HD trucks have the Duramax and 2 have the gas V8. Searching for a GMC Sierra 2500 diesel or a GMC 2500 Duramax? Use the Fuel Type filter above to see only the diesel trucks.
Choose the Duramax diesel if you
- Pull fifth-wheel campers, gooseneck trailers or loaded equipment trailers
- Want the most torque GMC offers in a heavy-duty truck: 975 lb-ft
- Tow down long grades and want the exhaust brake
- Want the Denali Ultimate, which has the Duramax as standard
Choose the 6.6L gas V8 if you
- Haul more than you tow, or tow lighter trailers
- Want the standard engine on the Pro through the Denali
- Want 401 horsepower without the cost of the diesel upgrade
- Still want the Allison 10-speed automatic and full Sierra HD capability
| Duramax 6.6L turbo-diesel V8 | 6.6L gas V8 | |
|---|---|---|
| Horsepower | 470 | 401 |
| Torque | 975 lb-ft | 464 lb-ft |
| Transmission | Allison 10-speed automatic | Allison 10-speed automatic |
| Standard on | Denali Ultimate | Pro, SLE, SLT, AT4, AT4X and Denali |
| Optional on | Pro, SLE, SLT, AT4, AT4X and Denali | None; it is the base engine |
| Towing aid | Exhaust brake | Trailer brake controller (both engines) |
| In stock at Ross Downing | 48 | 2 |
Engine figures and availability are from GMC's 2026 Sierra HD engine details and trim pages on GMC.com. In-stock counts as of October 7, 2026.
What Expert Reviewers Say About the 2026 GMC Sierra 2500 HD
MotorTrend scores the 2026 GMC Sierra 2500HD 8.8/10 and ranks it third among heavy-duty trucks, and Car and Driver rates the Sierra HD 6.5/10, fourth among heavy-duty pickups. Both praise the Duramax: MotorTrend calls its torque huge, and Car and Driver says the diesel trucks are capable yet quick and ride smoothly. MotorTrend names the AT4X and Denali Ultimate the most desirable trims. The trade-offs: Car and Driver notes that Ford and Ram heavy-duty rivals tow more and questions the top-end pricing, MotorTrend says the entry-level trucks feel cheap, and both point out that the Chevrolet Silverado HD shares the same hardware for less money.
MotorTrend
“the diesel’s massive torque whisks heavy trailers and payloads with ease, making it a desirable option.”Read the full MotorTrend review
Car and Driver
“Highly configurable, rides smoothly, capable yet quick with diesel engine.”Read the full Car and Driver review
Quotes are short excerpts from each publication's review of the 2026 GMC Sierra 2500 HD, reproduced with attribution; ratings are the publications' own. Ross Downing GMC is not affiliated with these publications.
GMC Sierra 2500 HD Interior, Bed and Technology
From the SLE up, the 2026 Sierra 2500 HD has a 13.4-inch touchscreen with Google built-in compatibility and a 12.3-inch digital Driver Information Center, and the AT4X and Denali Ultimate add 16-way power front seats with massage, which GMC rates best in class. GMC also lists best-in-class standard Crew Cab front headroom and legroom and best-in-class HD cargo bed volume, and Sierra HD Pro Safety is standard on every trim.
Cabins and Bed
- Denali: authentic wood, patterned aluminum trim, Forge perforated leather, 12-way heated and ventilated front seats and a power sunroof
- Denali Ultimate: Alpine Umber full-grain leather, Paldao wood and a 12-speaker Bose Premium Series system with Centerpoint surround sound
- Six-function MultiPro Tailgate, standard on the AT4, AT4X, Denali and Denali Ultimate, with an inner gate that folds into a full-width step rated for 375 pounds
- 6-foot-9-inch standard bed or 8-foot long bed, with the available MultiPro Tailgate Audio System by KICKER
Tech and Driver Assistance
- Up to 14 camera views, including Transparent Trailer View, Hitch View and Cargo Bed View with Zoom
- 15-inch multicolor Head-Up Display with off-road inclinometer, standard on the AT4X and Denali Ultimate and available on the AT4 and Denali
- Sierra HD Pro Safety on every trim: Automatic Emergency Braking, Front Pedestrian Braking, Forward Collision Alert, Following Distance Indicator, Lane Departure Warning and IntelliBeam
- Adaptive Cruise Control with trailering, available, which accounts for the extra drag and braking distance of a trailer
Features summarized from GMC's 2026 Sierra HD overview, trim pages and feature details on GMC.com; availability varies by trim and package. Driver-assistance systems do not replace attentive driving.
GMC Sierra 2500 HD Price, Lease Deals and Incentives in Hammond, LA
New GMC Sierra 2500 HD prices at Ross Downing start at $50,308 as of October 7, 2026; for 2027 GMC Sierra 2500 HD pricing and availability, call 985-227-4018. These are final listed prices that include $478 in dealer fees, not MSRP. What a Sierra 2500 HD costs you comes down to trim, engine, cab and options, so compare the listings above, then ask us about GMC Sierra 2500 HD lease deals, incentives and GM Financial rates. If you searched GMC Sierra 2500 HD price, GMC Sierra 2500 price or GMC 2500 for sale, these are our real, daily-updated numbers.
GMC Sierra 2500 HD Finance Offers and Incentives This Month
As of October 7, 2026, the GMC offers shown in the Sierra 2500 HD listings on this page are:
- Finance: Finance a new Sierra 2500 HD at 4.9% APR for 36 or 48 months, 5.9% APR for 60 months, or 6.9% APR for 72, 75 or 84 months, with no monthly payments until 2027, through GM Financial. Good through 11/2/2026.
- Cash: Bonus Cash of $2,000, on 8 of the 50 trucks on this page, good through 11/2/2026
- Cash: Purchase Allowance ($1,000 to $1,500, depending on the vehicle), on 35 of the 50 trucks on this page, good through 11/2/2026
- Lease: GMC's lease offer for the Hammond area on GMC.com (not shown in the listings): $799 a month for 36 months, $8,319 due at signing on a 2026 GMC Sierra 2500HD Crew Cab 4WD Denali. Ultra Low-Mileage Lease for well-qualified lessees through GM Financial: no security deposit, 30,000 miles over the lease with 25 cents a mile over that. Tax, title, license and dealer fees extra. Take delivery by 11/2/2026. Payments are for the configuration shown, MSRP $77,995; other trims and options change the payment.
Each listing's price breakdown shows exactly which offers apply to that VIN, and the listed prices already include the cash offers each vehicle qualifies for. Finance offers require approved credit through GM Financial and are not combinable with every cash offer; amounts and expiration dates are GMC's and change monthly. See every new GMC deal this month or apply for Sierra 2500 HD financing.
GMC Sierra 2500 HD Deals
This month's biggest Sierra 2500 HD discount, GM Financial APR offers and bonus programs, updated daily.
Sierra 2500 HD Financing
Get pre-approved online before you visit, then compare Sierra 2500 HD financing and lease options with our finance team.
Trade In Your Vehicle
Put your current truck, car or SUV toward a new Sierra 2500 HD with a trade-in value from our Hammond store.
Why Buy Your GMC Sierra 2500 HD From Ross Downing GMC
Ross Downing GMC is at 1301 S Morrison Blvd, Hammond, LA 70403, open Monday through Friday 8:30 AM to 7:30 PM and Saturday 9:00 AM to 5:30 PM, and rated 4.5 stars across 1,035 Google reviews. Every new GMC Sierra 2500 HD for sale on this page is our own inventory with a live price, and each listing shows its price breakdown and the GMC offers that apply to that VIN. Our GMC service department is at the same address; call 985-222-2386 to book.
Google rating and review count as of October 7, 2026.
Serving Sierra HD Buyers From Ponchatoula and Amite to Covington, Mandeville and Slidell
Contractors, farmers and anyone towing a camper, horse trailer or boat come to Ross Downing GMC from across the Northshore. From our Hammond store, Ponchatoula is about 10 minutes away, Independence about 15 minutes, Amite about 25 minutes, Madisonville about 30 minutes, Covington about 35 minutes, Mandeville about 40 minutes and Slidell about 55 minutes, and Metairie is about 1 hour away. Looking for a GMC Sierra 2500 HD dealer near Covington, Mandeville or Slidell? Call 985-227-4018 before you drive and we will have the truck you picked ready.
HammondPonchatoulaAmiteIndependenceLorangerAlbanySpringfieldKentwoodCovingtonMandevilleMadisonvilleAbita SpringsSlidellFolsomBogalusaFranklintonMcComb
Hours and Directions
Call 985-227-4018
Drive times are approximate, from OpenStreetMap routing without traffic.
GMC Sierra 2500 HD FAQ: Price, Trims, Diesel vs Gas, Towing, 2500 vs 3500 and MPG
What is the 2026 GMC Sierra 2500 HD price at Ross Downing in Hammond?
As of October 7, 2026, new GMC Sierra 2500 HD trucks at Ross Downing GMC start at $50,308, a final listed price that includes $478 in dealer fees but not tax, title or license. Price climbs with trim, engine, cab and options, from the Pro to the Denali Ultimate, and each listing above shows its own price breakdown. As of October 7, 2026, the biggest Sierra 2500 HD discount at Ross Downing is $14,022 off MSRP on a 2026 GMC Sierra 2500 HD Denali (stock 2-G9645); or 4.9% APR for 36 or 48 months, 5.9% APR for 60 months, or 6.9% APR for 72, 75 or 84 months on select 2026 Sierra 2500 HD models for well-qualified buyers through GM Financial; or lease a 2026 GMC Sierra 2500HD Crew Cab 4WD Denali for $799 a month for 36 months with $8,319 due at signing (GMC's offer for well-qualified lessees through GM Financial; tax, title, license and dealer fees extra).
Which GMC Sierra 2500 HD trims are in stock in Hammond, LA?
As of October 7, 2026, Ross Downing has 50 new Sierra 2500 HD trucks: 27 AT4, 9 Denali, 9 Denali Ultimate, 4 AT4X and 1 Pro. By engine, that is 48 with the Duramax 6.6L turbo-diesel V8, 2 with the 6.6L gas V8, and by cab, 49 Crew Cab and 1 Double Cab. Use the Model and Trim filter above to see any one of them.
Should I buy a GMC Sierra 2500 HD diesel or gas?
Buy the Duramax 6.6L turbo-diesel V8 if you tow heavy trailers often: it makes 470 horsepower and 975 lb-ft of torque and adds an exhaust brake. The 6.6L gas V8, with 401 horsepower and 464 lb-ft, is standard on every trim except the Denali Ultimate and suits lighter trailers. Both use an Allison 10-speed automatic. As of October 7, 2026, 48 of our 50 Sierra 2500 HD trucks have the Duramax.
Is the GMC Sierra 2500 HD AT4 or Denali better?
The AT4 is the off-road pick, with the Off-Road Suspension Package, twin-tube Rancho shocks, skid plates and a Jet Black interior with Kalahari accents, rated for 21,190 pounds of gooseneck towing as a Crew Cab. The Denali is the luxury pick, with real wood, Forge perforated leather, 12-way heated and ventilated front seats and a power sunroof, rated for 19,900 pounds. As of October 7, 2026, we have 27 AT4 and 9 Denali trucks in stock.
How much can a 2026 GMC Sierra 2500 HD tow?
Properly equipped, the 2026 Sierra 2500 HD tows up to 22,390 pounds with a gooseneck or fifth-wheel hitch as a Regular Cab, or 21,870 as a Crew Cab, and up to 20,000 pounds with a conventional hitch. GMC lists a GCWR of up to 30,000 pounds and payload of up to 4,049. Ratings depend on cab, bed, engine and equipment, so check the specific truck before you tow.
Is the Sierra 2500 HD a 3/4-ton truck, and how is it different from the 3500 HD?
Yes. GMC calls the Sierra 2500 HD a three-quarter-ton truck, between the half-ton Sierra 1500 and the one-ton Sierra 3500 HD. The difference is capacity: GMC rates the 2500 HD at up to 22,390 pounds of towing and 4,049 pounds of payload, and the 3500 HD, which is also offered with dual rear wheels, at up to 36,000 and 7,290. Shopping for a half-ton instead? See our GMC Sierra 1500 page.
What gas mileage does a GMC Sierra 2500 HD get?
The EPA does not publish fuel-economy ratings for heavy-duty pickups like the Sierra 2500 HD, so there is no official mpg figure. In Car and Driver's 75-mph highway test, a Duramax-powered Sierra 2500 HD Denali returned 17 mpg. Real-world mileage depends heavily on load, towing and driving.
Where can I buy a new GMC Sierra 2500 HD near Covington, Mandeville or Slidell?
Ross Downing GMC, at 1301 S Morrison Blvd, Hammond, LA 70403, is about 35 minutes from Covington, about 40 minutes from Mandeville and about 55 minutes from Slidell. We are open Monday through Friday 8:30 AM to 7:30 PM and Saturday 9:00 AM to 5:30 PM. Call 985-227-4018 to confirm the Sierra 2500 HD you want and set up a test drive before you make the trip.