Ross Downing GMC of Gonzales

New GMC Sierra 1500 for Sale in Gonzales, 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.

Ross Downing GMC has 177 new 2026 GMC Sierra 1500 trucks in stock as of October 19, 2026, with listed prices from $41,548. Shop Pro, Elevation, SLT, AT4, Denali and Denali Ultimate in the live inventory above, then use the trim guide, the engine and towing numbers, the AT4 vs Denali 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 2522 S Burnside Ave in Gonzales.

  • 177 in stocknew 2026 GMC Sierra 1500 trucks
  • From $41,548lowest listed price today
  • 90 with the 5.3L V873 with the Duramax diesel, 14 with the 6.2L V8, 0 with the TurboMax
  • 140 4WD trucks37 with 2WD

GMC Sierra 1500 Deals in Gonzales, LA: Up to $14,022 Off MSRP

$14,022 off MSRP on a 2026 GMC Sierra 1500 Denali Ultimate (stock 3-G91006), as of October 19, 2026. Ross Downing price $75,342, MSRP $89,364.

Or 0% APR for 36, 48 or 60 months, or 2.9% APR for 72 months on the 2026 Sierra 1500 through GM Financial for well-qualified buyers, plus no monthly payments until 2027, good through 11/2/2026.

Or lease a 2026 GMC Sierra 1500 Short Box Crew Cab 4WD Elevation w/5.3L EcoTec3 V8 for $349 a month for 24 months with $7,679 due at signing, GMC's lease offer for the Gonzales area this month. 6 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, 20,000 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 $60,990; other trims and options change the payment. See every new GMC deal this month, get pre-approved online, or call 225-224-0385.

Extra Sierra 1500 Savings This Month in Gonzales, LA

Trade in a 2012 or newer vehicle and get an extra $3,000 to $4,000 off a new Sierra 1500 this month. Good through 11/2/2026.

See any Sierra 1500 listing above for the details on this offer, or call 225-224-0385.

Inventory counts and prices above reflect this page's live listings as of October 19, 2026 and change as vehicles sell. 16 of the 177 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.

Blue 2026 GMC Sierra 1500 Denali Crew Cab on a coastal highway; new GMC Sierra 1500 trucks for sale at Ross Downing GMC in Gonzales, LA

GMC Sierra for Sale Near You in Gonzales, LA

Searching for GMC Sierra inventory, a GMC Sierra dealer or a new GMC Sierra 1500 for sale near Baton Rouge? This page is Ross Downing's live stock: 177 new 2026 GMC Sierra 1500 trucks at our Gonzales store, with every trim, engine, color and price shown above. However you typed it, GMC Sierra new, new Sierra, GMC 1500, GMC Sierra sale or GMC Sierra dealership, you are looking at the same trucks, and a call to 225-224-0385 gets one ready for a test drive.

GMC Sierra 1500 Trims at Ross Downing: Pro, SLE, Elevation, SLT, AT4, AT4X, Denali and Denali Ultimate

GMC builds the 2026 Sierra 1500 in eight trims, and today our inventory holds 80 SLT, 72 AT4, 9 Pro, 8 Elevation, 7 Denali and 1 Denali Ultimate. The Pro, SLE and Elevation come standard with the TurboMax engine, the SLT and Denali with the 5.3L V8, the AT4 and AT4X with the Duramax 3.0L turbo-diesel and the Denali Ultimate with the 6.2L V8. The AT4 and AT4X are the off-road trims, and the Denali and Denali Ultimate are the luxury trims. Sierra 1500 colors in stock right now include Sterling Metallic, Summit White, Onyx Black, Coastal Dune, Glacier White Tricoat. Whether you searched GMC Sierra Pro, GMC Sierra SLT, GMC Sierra Elevation, GMC Sierra Denali or GMC Sierra Denali Ultimate, each trim is in the guide below and in the listings above when it is in stock.

2026 GMC Sierra 1500 Pro, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 Pro
Ross Downing price from $41,548

The Sierra 1500 Pro is the work truck of the lineup, and it is the only Sierra 1500 GMC builds as a Regular Cab, alongside Double Cab and Crew Cab versions.

  • TurboMax engine with an 8-speed automatic: 310 horsepower and 430 lb-ft
  • 12 cargo tie-downs and a 12-volt front power outlet
  • Available 5.3L V8, Graphite Edition and a 10-way power driver seat with power lumbar
9in stock at Ross Downing todayShop the 9 Pro in stock
2026 GMC Sierra 1500 SLE, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 SLE
Not in stock today: call 225-224-0385 to order or check arrivals

The SLE adds the big-screen cabin to the Pro's basics, with heated seats and a heated steering wheel.

  • 13.4-inch touchscreen and 12.3-inch Driver Information Center
  • 10-way power heated driver seat with lumbar, heated front passenger seat and heated steering wheel
  • Automatic locking rear differential, with the Duramax 3.0L turbo-diesel available
0in stock todayAsk about the SLE
2026 GMC Sierra 1500 Elevation, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 Elevation
Ross Downing price from $48,583

The Elevation is the monochrome Sierra 1500, with body-color styling and a grille with gloss-black mesh inserts.

  • 20-inch gloss-black painted aluminum wheels and LED fog lamps
  • Everything the SLE has, including the 13.4-inch touchscreen
  • Available leather-appointed front seats, front bucket seats with wireless charging and a power sunroof
8in stock at Ross Downing todayShop the 8 Elevation in stock
2026 GMC Sierra 1500 SLT, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 SLT
Ross Downing price from $49,268

The SLT is the first Sierra 1500 with the 5.3L V8 as standard, and it brings back the chrome look.

  • 5.3L V8 with a 10-speed automatic: 355 horsepower and 383 lb-ft
  • 10-way power front outboard seats with power lumbar and the six-function MultiPro Tailgate
  • Chrome grille, door handles and bumpers, with the Duramax diesel and ProGrade Trailering System available
80in stock at Ross Downing todayShop the 80 SLT in stock
2026 GMC Sierra 1500 AT4, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 AT4
Ross Downing price from $59,113

The AT4 is the off-road Sierra 1500, sold as a 4WD Crew Cab with a factory lift and the Duramax diesel as standard.

  • 2-inch factory lift, Rancho monotube shocks, skid plates and a two-speed Autotrac transfer case
  • Duramax 3.0L turbo-diesel standard, with the 6.2L V8 available
  • Jet Black interior with Kalahari accents and heated and ventilated perforated leather front seats
72in stock at Ross Downing todayShop the 72 AT4 in stock
2026 GMC Sierra 1500 AT4X, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 AT4X
Not in stock today: call 225-224-0385 to order or check arrivals

The AT4X is the most capable off-roader in the Sierra 1500 range, a 4WD short-bed Crew Cab built on the AT4.

  • Front and rear electronic locking differentials, a combination GMC says no competitor in its class offers
  • Multimatic DSSV dampers, 11.5 inches of ground clearance and a 34-degree approach angle
  • 16-way power front seats with heat, ventilation and massage; available AT4X AEV Edition with AEV bumpers and five skid plates
0in stock todayAsk about the AT4X
2026 GMC Sierra 1500 Denali, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 Denali
Ross Downing price from $62,063

The Denali is the luxury Sierra 1500, with GMC's signature chrome grille and a cabin trimmed in real wood.

  • 5.3L V8 standard, with the Duramax diesel and the 6.2L V8 available
  • Authentic wood, patterned aluminum trim, Forge perforated leather and 12-way power front seats
  • Available Super Cruise hands-free driver assistance and CarbonPro composite bed
7in stock at Ross Downing todayShop the 7 Denali in stock
2026 GMC Sierra 1500 Denali Ultimate, sold new at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 Denali Ultimate
Ross Downing price from $75,342

The Denali Ultimate is the top of the Sierra 1500 range, a 4WD short-bed Crew Cab with Super Cruise as standard.

  • 6.2L V8 with a 10-speed automatic: 420 horsepower and 460 lb-ft
  • Super Cruise with a 3-year OnStar One plan, plus 16-way power front seats with heat, ventilation and massage
  • Vader Chrome grille, 22-inch machined aluminum wheels and a 12-speaker Bose Premium Series sound system
1in stock at Ross Downing todayShop the 1 Denali Ultimate in stock

In-stock counts reflect this page's live listings as of October 19, 2026 and change daily. Trim equipment is summarized from GMC's 2026 Sierra 1500 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 1500 Engines, Towing, Payload and MPG

The 2026 GMC Sierra 1500 offers four engines: the 310-horsepower TurboMax, the 355-horsepower 5.3L V8, the 420-horsepower 6.2L V8 and the Duramax 3.0L turbo-diesel with 495 lb-ft of torque. GMC Sierra horsepower tops out at 420 with the 6.2L V8, while the Duramax brings the most torque. Properly equipped, a Sierra 1500 tows up to 13,300 pounds with the Duramax, and the EPA rates the TurboMax at 18 mpg city and 21 highway. Our Sierra 1500 stock today includes 90 with the 5.3L V8, 73 with the Duramax 3.0L turbo-diesel, 14 with the 6.2L V8.

Red 2026 GMC Sierra 1500 towing an Airstream travel trailer on a mountain road; Sierra 1500 towing at Ross Downing GMC in Gonzales, LA

Four Engines

  • TurboMax: 310 horsepower and 430 lb-ft with an 8-speed automatic, standard on the Pro, SLE and Elevation, rated to tow up to 9,400 pounds and covered by a 5-year/100,000-mile Powertrain Limited Warranty
  • 5.3L V8: 355 horsepower and 383 lb-ft, standard on the SLT and Denali and available on the Pro, SLE and Elevation, rated to tow up to 11,200 pounds
  • 6.2L V8: 420 horsepower and 460 lb-ft with Dynamic Fuel Management, standard on the Denali Ultimate and available on the SLT, AT4, AT4X and Denali, rated to tow up to 13,100 pounds
  • Duramax 3.0L turbo-diesel: 305 horsepower and 495 lb-ft, standard on the AT4 and AT4X and available on the SLE, Elevation, SLT, Denali and Denali Ultimate, rated to tow up to 13,300 pounds
  • The 5.3L, 6.2L and Duramax engines all use a 10-speed automatic

Towing, Payload and Fuel Economy

  • GMC Sierra towing capacity: up to 13,300 pounds as a Double Cab 2WD with a standard bed, the Duramax, the Max Trailering Package and 20-inch wheels
  • Fifth-wheel and gooseneck trailers up to 9,900 pounds as a properly equipped Double Cab 2WD with the 5.3L V8 and a customer-installed hitch
  • Maximum payload: 2,020 pounds for a short-bed Crew Cab, 1,950 for a standard-bed Crew Cab, 2,040 for a Double Cab and 2,230 for a Regular Cab
  • GMC Sierra MPG: the EPA rates the TurboMax at 18 mpg city and 21 highway; GMC Sierra gas mileage for the V8s and the diesel depends on the configuration
  • ProGrade Trailering System with trailer profiles, trailer tire pressure monitoring and pre-departure checklists, standard on the AT4, AT4X, Denali and Denali Ultimate
  • For heavier towing, step up to the Sierra HD; we have 77 in stock on our Sierra 2500 HD page

Engine, towing, payload and fuel-economy figures are from GMC's 2026 Sierra 1500 overview page, engine details and FAQ on GMC.com. Towing and payload depend on configuration; check the specific truck before you tow, and GMC advises a weight-distributing hitch above 7,000 pounds.

GMC Sierra AT4 vs Denali: Which Sierra 1500 Fits You?

Choose the AT4 if you want the off-road Sierra 1500, with a 2-inch factory lift, Rancho shocks, skid plates and the Duramax diesel as standard; choose the Denali if you want the luxury Sierra 1500, with the signature chrome grille, real wood trim, Forge perforated leather and the 5.3L V8. Both are Crew Cabs that seat up to five. The AT4 is 4WD only, while the Denali comes with 2WD or 4WD, and only the Denali offers Super Cruise. If you want both, the AT4X adds front and rear locking differentials and massaging seats, and the Denali Ultimate adds the 6.2L V8 and Super Cruise as standard.

Red 2026 GMC Sierra 1500 AT4 and black 2026 GMC Sierra 1500 Denali parked by a lake, both sold new at Ross Downing GMC in Gonzales, LA

Choose the Sierra 1500 AT4 if you

  • Drive on trails, fields or ramps and want the 2-inch lift, skid plates and two-speed transfer case
  • Want the Duramax diesel's 495 lb-ft of torque as standard
  • Like the Jet Black interior with Kalahari accents and heated and ventilated leather seats
  • Want 11.1 inches of ground clearance with the short box

Choose the Sierra 1500 Denali if you

  • Want the signature Denali chrome grille and chrome assist steps
  • Want authentic wood, patterned aluminum trim and 12-way power front seats
  • Want the option of Super Cruise hands-free driving or the CarbonPro composite bed
  • Want a choice of 2WD or 4WD
Sierra 1500 AT4Sierra 1500 Denali
Standard engineDuramax 3.0L turbo-diesel, 305 hp, 495 lb-ft5.3L V8, 355 hp, 383 lb-ft
Available engines6.2L V8Duramax diesel or 6.2L V8
Drive4WD2WD or 4WD
Off-road equipment2-inch lift, Rancho shocks, skid plates, locking rear differentialNot standard
Front seatsHeated and ventilated perforated leatherForge perforated leather, 12-way power
Super CruiseNot offeredAvailable
In stock at Ross Downing727

Comparison figures are from GMC's 2026 Sierra 1500 AT4 and Denali pages, engine details and FAQ on GMC.com; options change the equipment. In-stock counts as of October 19, 2026.

What Expert Reviewers Say About the 2026 GMC Sierra 1500

MotorTrend scores the 2026 GMC Sierra 1500 8.8/10 and ranks it third among full-size trucks, and Car and Driver rates it 8.5/10, fifth among full-size pickups. Both praise the powertrain choices: MotorTrend says there is no bad engine option and calls Super Cruise excellent, and Car and Driver likes the towing and payload ratings and the Crew Cab's room. The trade-offs they note: MotorTrend finds the lower-trim interiors dreary and says the available 22-inch wheels hurt the ride, and Car and Driver says the lower trims push the limits of GMC's upscale image. MotorTrend also calls the Sierra 1500 functionally identical to the Chevrolet Silverado 1500, with nicer trim and materials.

MotorTrend8.8/10
“There’s no bad engine option, the truck drives nicely, and the Super Cruise hands-free driving system is excellent.”
Read the full MotorTrend review
Car and Driver8.5/10
“The GMC Sierra is just as tough as its Chevy cousin but brings a bit more class and refinement to the workweek.”
Read the full Car and Driver review

Quotes are short excerpts from each publication's review of the 2026 GMC Sierra 1500, reproduced with attribution; ratings are the publications' own. Ross Downing GMC is not affiliated with these publications.

GMC Sierra Interior, Technology and Safety

The 2026 Sierra 1500 offers more than 40 inches of combined driver-focused displays, which GMC says is the most in its class: an available 13.4-inch touchscreen with Google built-in compatibility, a 12.3-inch driver display and a 15-inch Head-Up Display. GMC lists best-in-class standard front headroom and legroom for the Crew Cab, at 43.0 and 44.5 inches, and rear passengers get 43.4 inches of legroom in the Crew Cab against 35.2 in the Double Cab. GMC Pro Safety is standard on every trim.

2026 GMC Sierra 1500 Denali cabin with brown leather seats and large digital displays, at Ross Downing GMC in Gonzales, LA

Cabin, Bed and Storage

  • Heated and ventilated front seats on the AT4, and 16-way power massaging front seats on the AT4X and Denali Ultimate
  • Six-function MultiPro Tailgate, standard from the SLT up, with an inner gate that folds into a step rated for 375 pounds
  • Available CarbonPro composite bed with 63.9 cubic feet of short-bed volume, which GMC rates best in class
  • Rear seatback compartments, rear under-seat storage and a lockable lower glove box

Tech and Driver Assistance

  • Super Cruise hands-free driver assistance, standard on the Denali Ultimate with a 3-year OnStar One plan and available on the Denali
  • Up to 14 camera views, including Transparent Trailer View and Bed View with Zoom and Hitch Guidance
  • GMC Pro Safety on every trim: Automatic Emergency Braking, Forward Collision Alert, Front Pedestrian Braking, Lane Keep Assist with Lane Departure Warning and IntelliBeam
  • Rear Cross Traffic Braking, Trailer Side Blind Zone Alert, HD Surround Vision and front and rear park assist, standard on the AT4, AT4X, Denali and Denali Ultimate

Features summarized from GMC's 2026 Sierra 1500 overview, trim pages, feature details and FAQ on GMC.com; availability varies by trim and package. Driver-assistance systems do not replace attentive driving.

GMC Sierra 1500 Price, Lease Deals and Incentives in Gonzales, LA

New GMC Sierra 1500 prices at Ross Downing start at $41,548 as of October 19, 2026; for 2027 GMC Sierra 1500 pricing and availability, call 225-224-0385. These are final listed prices that include $478 in dealer fees, not MSRP. What a Sierra 1500 costs you comes down to trim, engine, drive and options, so compare the listings above, then ask us about GMC Sierra lease deals, GMC Sierra 1500 incentives and GM Financial rates. If you searched GMC Sierra price, Sierra price, 2026 GMC Sierra price, GMC Sierra cost or 2026 GMC Sierra cost, these are our real, daily-updated numbers.

GMC Sierra 1500 Finance Offers and Incentives This Month

As of October 19, 2026, the GMC offers shown in the Sierra 1500 listings on this page are:

  • Finance: Finance a new Sierra 1500 at 0% APR for 36, 48 or 60 months, or 2.9% APR for 72 months, with no monthly payments until 2027, through GM Financial ($16.67 a month per $1,000 financed over 60 months at 0%). Good through 11/2/2026.
  • Finance: Finance a new Sierra 1500 at 6.9% APR for 75 or 84 months, with no monthly payments until 2027, through GM Financial ($15.04 a month per $1,000 financed over 84 months at 6.9%). Good through 11/2/2026.
  • Cash: Bonus Cash ($1,000 to $2,500, depending on the vehicle), on 177 of the 177 trucks on this page, good through 11/2/2026
  • Cash: Purchase Allowance of $1,500, on 177 of the 177 trucks on this page, good through 11/2/2026
  • Extra savings: Trade in a 2012 or newer vehicle and get an extra $3,000 to $4,000 off a new Sierra 1500 this month.
  • Lease: GMC's lease offer for the Gonzales area on GMC.com (not shown in the listings): $349 a month for 24 months, $7,679 due at signing on a 2026 GMC Sierra 1500 Short Box Crew Cab 4WD Elevation w/5.3L EcoTec3 V8. Ultra Low-Mileage Lease for well-qualified lessees through GM Financial: no security deposit, 20,000 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 $60,990; 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 1500 financing.

Red 2026 GMC Sierra 1500 parked in a forest clearing; GMC Sierra 1500 deals at Ross Downing GMC in Gonzales, LA
GMC Sierra 1500 Deals

This month's biggest Sierra 1500 discount, GM Financial APR offers and bonus programs, updated daily.

See new GMC deals

White 2026 GMC Sierra 1500 Elevation on a grassy hilltop; GMC Sierra 1500 financing at Ross Downing GMC in Gonzales, LA
Sierra 1500 Financing

Get pre-approved online before you visit, then compare Sierra 1500 financing and lease options with our finance team.

Get pre-approved

White 2026 GMC Sierra 1500 crossing a steel bridge; trade in your vehicle at Ross Downing GMC in Gonzales, LA
Trade In Your Vehicle

Put your current car, truck or SUV toward a new Sierra 1500 with a trade-in value from our Gonzales store.

Value your trade

Why Buy Your GMC Sierra 1500 From Ross Downing GMC

Ross Downing GMC is at 2522 S Burnside Ave, Gonzales, LA 70737, 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 1,658 Google reviews. Every 2026 GMC Sierra 1500 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 225-963-6189 to book.

Google rating and review count as of October 19, 2026.

Serving Sierra 1500 Buyers From Prairieville and Denham Springs to Baton Rouge, Donaldsonville and Plaquemine

Shoppers looking for GMC trucks for sale come to Ross Downing GMC of Gonzales from across Ascension, Livingston and East Baton Rouge parishes. From our Gonzales store, Prairieville is about 15 minutes away, Sorrento about 10 minutes, Donaldsonville about 20 minutes, Baton Rouge about 30 minutes, Port Allen about 35 minutes, Walker about 35 minutes, Denham Springs about 35 minutes and Plaquemine about 50 minutes, and buyers from the river parishes make the trip too: LaPlace is about 40 minutes away. Looking for a 2026 GMC Sierra dealership near Baton Rouge, Denham Springs or Prairieville? Call 225-224-0385 before you drive and we will confirm the truck you picked is ready.

GonzalesPrairievilleBaton RougeDenham SpringsWalkerSorrentoSt. AmantGeismarDonaldsonvillePlaqueminePort AllenZacharyCentralLaPlace
Hours and Directions Call 225-224-0385

Drive times are approximate, from OpenStreetMap routing without traffic.

GMC Sierra 1500 FAQ: Price, Trims, AT4 vs Denali, Towing and the 2027 Model

What is the 2026 GMC Sierra 1500 price at Ross Downing in Gonzales?

As of October 19, 2026, new GMC Sierra 1500 trucks at Ross Downing GMC start at $41,548, a final listed price that includes $478 in dealer fees but not tax, title or license. Price climbs with trim, engine, drive and options, from the work-ready Pro to the Denali Ultimate. Each listing above shows its own price breakdown. As of October 19, 2026, the biggest Sierra 1500 discount at Ross Downing is $14,022 off MSRP on a 2026 GMC Sierra 1500 Denali Ultimate (stock 3-G91006); or 0% APR for 36, 48 or 60 months, or 2.9% APR for 72 months on the 2026 Sierra 1500 for well-qualified buyers through GM Financial; or lease a 2026 GMC Sierra 1500 Short Box Crew Cab 4WD Elevation w/5.3L EcoTec3 V8 for $349 a month for 24 months with $7,679 due at signing (GMC's offer for well-qualified lessees through GM Financial; tax, title, license and dealer fees extra).

Which GMC Sierra 1500 trims are in stock in Gonzales, LA?

As of October 19, 2026, Ross Downing has 177 new Sierra 1500 trucks: 80 SLT, 72 AT4, 9 Pro, 8 Elevation, 7 Denali and 1 Denali Ultimate. By drive, that is 140 4WD and 37 2WD, and by cab, 176 Crew Cab and 1 Double Cab. Use the Model and Trim filter above to see any one of them.

Is the GMC Sierra AT4 or Denali better?

The AT4 is the off-road pick and the Denali is the luxury pick. The AT4 comes with a 2-inch factory lift, Rancho shocks, skid plates and the Duramax 3.0L turbo-diesel as standard, and it is 4WD only. The Denali brings the signature chrome grille, real wood trim, Forge perforated leather and the 5.3L V8, with 2WD or 4WD and Super Cruise available. As of October 19, 2026, we have 72 AT4 and 7 Denali trucks in stock.

Is the 2027 GMC Sierra 1500 here, and what changes?

GMC calls the 2027 Sierra 1500 the next generation. On GMC.com it lists two all-new V8s, a 402-horsepower 5.7L and a 481-horsepower 6.6L, a 350-horsepower TurboMax, more than 60 inches of combined available screens and up to 13,500 pounds of towing, and it shows preproduction trucks for now. Ross Downing does not have a 2027 Sierra 1500 in inventory today; call 225-224-0385 to check availability.

Is there a GMC Sierra 1500 diesel at Ross Downing?

Yes. As of October 19, 2026, 73 of our 177 Sierra 1500 trucks have the Duramax 3.0L turbo-diesel; use the Fuel Type filter above to see them. GMC rates the diesel at 305 horsepower and 495 lb-ft with a 10-speed automatic, and it is the strongest tower in the Sierra 1500 lineup, up to 13,300 pounds when properly equipped. It is standard on the AT4 and AT4X and available on the SLE, Elevation, SLT, Denali and Denali Ultimate.

How much can a GMC Sierra 1500 tow?

Properly equipped, the 2026 Sierra 1500 tows up to 13,300 pounds with the Duramax 3.0L turbo-diesel, as a Double Cab 2WD with a standard bed, the Max Trailering Package and 20-inch wheels. By engine, GMC lists up to 9,400 pounds for the TurboMax, 11,200 for the 5.3L V8, 13,100 for the 6.2L V8 and 13,300 for the Duramax. A properly equipped Double Cab 2WD with the 5.3L V8 can pull a fifth-wheel or gooseneck trailer of up to 9,900 pounds.

Is GMC a luxury version of Chevrolet?

GMC and Chevrolet are both General Motors brands, and the Sierra 1500 shares its engineering with the Chevrolet Silverado 1500, so a GMC Sierra vs Chevy Silverado choice comes down to styling, cabin and trim. GMC positions the Sierra as the more premium truck: the Denali and Denali Ultimate add real wood, premium leather and, on the Denali Ultimate, standard Super Cruise.

Where can I buy a new GMC Sierra 1500 near Baton Rouge?

Ross Downing GMC of Gonzales, at 2522 S Burnside Ave, Gonzales, LA 70737, is about 30 minutes from Baton Rouge, about 15 minutes from Prairieville and about 35 minutes from Denham Springs. We are open Monday through Friday 8:30 AM to 7:30 PM and Saturday 9:00 AM to 5:30 PM. Call 225-224-0385 to confirm the Sierra 1500 you want and set up a test drive before you make the trip.