Does the GMC Sierra 1500 come with a diesel engine for Oklahoma City drivers?

Yes, the GMC Sierra 1500 is offered with a Duramax turbo-diesel engine. Bob Howard Buick GMC in Oklahoma City sells the Sierra 1500 new.

Keep reading below, then schedule a test drive in Oklahoma City. Bringing your own numbers to the lot settles this faster than any spec sheet.

Yes, the GMC Sierra 1500 comes with a Duramax turbo-diesel engine option

The Duramax is a 3.0L Turbo-Diesel inline-six, and GMC lists it as an engine option on the Sierra 1500. The engine is not on every truck. It is one of the powertrains you choose when you pick a trim and configuration, so the diesel you want has to be on the lot you visit. Bob Howard Buick GMC, at 13300 Broadway Ext in Oklahoma City, sells new Sierra 1500 trucks, and that is where a north Oklahoma City or Edmond buyer should start.

The Sierra 1500 pages from GMC list the Duramax 3.0L Turbo-Diesel alongside the gasoline 2.7L and 5.3L engines and the 6.2L V8 on higher trims.

How does the Sierra 1500 diesel compare with its gas engines on power?

The diesel’s advantage is torque and towing rather than peak horsepower, so the way to choose is by what you will pull and haul.

Compare the Pro, SLE, Elevation, SLT, Denali, AT4 and Denali Ultimate listings and you will see the same 420 hp rating across the lineup. Each trim’s own GMC page gives the horsepower for the configuration you pick, so check that number against the cab and drivetrain on the truck you are looking at.

Which GMC Sierra 1500 trims can you get with the diesel engine?

The diesel is offered across several trims, and each trim carries its own starting price from GMC. The Sierra 1500 Pro starts at $38,300, the SLE at $48,700, the Elevation at $50,500 and the SLT at $55,100. The Denali starts at $66,100, the AT4 at $67,000, the AT4X at $79,600 and the Denali Ultimate at $84,400.

Those are GMC’s starting prices for each trim. Your final price depends on the options and configuration you choose, so ask Bob Howard Buick GMC to build a diesel quote for the exact trim you want. At 13300 Broadway Ext, you can see the trims in person and compare them against each other on the same visit.

How much can a diesel GMC Sierra 1500 tow and haul?

The diesel is the towing choice in the Sierra 1500 lineup. GMC rates the Duramax 3.0L Turbo-Diesel Crew Cab short bed 2WD at 13,100 pounds maximum towing, with a 19,000-pound gross combined weight rating. The Double Cab standard bed 2WD reaches 13,300 pounds, and the same truck with the Max Trailering Package and 20-inch wheels reaches up to 13,300 pounds as well.

The gas TurboMax trims tow less. The Crew Cab short bed 2WD TurboMax tows 9,100 pounds, with a 14,500-pound gross combined weight rating. That gap is the reason to pick the diesel if your trailer is heavy. Ask the Bob Howard Buick GMC team to walk through the trailering chart for the exact configuration you plan to buy, because towing depends on the cab, bed and drive setup.

What is the Sierra 1500 diesel’s EPA fuel economy rating?

The EPA rates the 2026 Sierra 1500 2WD diesel at 23 city, 28 highway and 25 combined miles per gallon. The 4WD with Sport Mode diesel is rated 22 city, 26 highway and 24 combined. The Mud Terrain Tires with Sport Mode diesel comes in at 21 city, 24 highway and 23 combined.

Those figures are EPA certified ratings, and they are the numbers on the window sticker. EPA combined ratings are a weighted average of city and highway, so your real mileage will move with how you drive and what you tow. Compare the diesel’s combined figure against the gasoline trims on the same drivetrain before you decide.

What warranty covers the GMC Sierra 1500 diesel powertrain?

GMC’s basic warranty on the Sierra 1500 is 3 years or 36,000 miles, whichever comes first. On the powertrain side, GMC’s typical coverage runs 5 years or 60,000 miles, whichever comes first, and other durations are available.

Read the powertrain line as GMC’s standard coverage for the Sierra 1500, not as a promise on every truck. Ask the store to confirm the coverage on the exact truck you buy, since the terms can vary.

How do you shop new Sierra 1500 trucks at Bob Howard Buick GMC?

Bob Howard Buick GMC sells new Sierra 1500 trucks from its Oklahoma City location on Broadway Ext. The store lists MSRP, dealer discount, documentation fee and sale price for each new stock unit online, so you can see the numbers for the exact truck before you visit. You can reserve a Sierra 1500 test drive on the store’s website or by contacting the store.

Start by finding the Sierra 1500 diesel you want in the new listings, then reserve a test drive for that truck. Bring the trim and configuration you want to compare, and ask the sales team to walk you through the sale price on that specific stock unit.

The store’s sales hours are Monday to Saturday, 8:30 AM to 9:00 PM, and it is closed Sunday. Plan your test drive inside those hours.

Can you reserve a test drive online at Bob Howard Buick GMC?

Yes. Reserve the Sierra 1500 diesel you want to drive, and the sales team can set it up for your visit.

Can you get a trade-in offer online before visiting Bob Howard Buick GMC?

If you are trading in a vehicle, you can come in with or without an appointment, and you can enter your trade-in offer amount into the payment calculator.

Can you apply for financing online at Bob Howard Buick GMC?

A secure finance application can be completed online. Once you have a trade-in offer, enter the amount into the payment calculator to see how it changes your payment before you apply.

Does Bob Howard Buick GMC offer leases on new GMC trucks?

Yes. Bob Howard Buick GMC offers new Buick and GMC leases as well as new and pre-owned financing, and a leased vehicle can be bought out at any point during the lease.

What fees and taxes apply when you buy a new truck in Oklahoma?

Oklahoma charges two state taxes on a new vehicle purchase. The motor vehicle excise tax under 68 O.S. Section 2103 is 3.25% of the value of a new vehicle, and the sales tax under 68 O.S. Section 1355(2) is 1.25% of the price. The Oklahoma Tax Commission’s rules say the trade-in amount is excluded from the excise taxable value, and that documentary fees are not part of the price used for excise tax.

Service Oklahoma sets the title and registration fees. The vehicle title fee is $11.00, the transfer fee is $17.00, the insurance fee is $1.50 and the VIN inspection fee is $4.00. The full-year registration fee for a standard vehicle is $96.00 in its first through fourth year of registration.

Does Bob Howard Buick GMC serve drivers outside Oklahoma City, such as Edmond?

Bob Howard Buick GMC is in Oklahoma City and also serves Midwest City, Del City and Moore. Elsewhere on its site, the store names Edmond, Arcadia and Midwest City as communities it serves.

Where is Bob Howard Buick GMC and what are its hours?

You will find the store at 13300 Broadway Ext in Oklahoma City, OK 73131. Sales hours are Monday to Saturday, 8:30 AM to 9:00 PM, and service runs 7:00 AM to 7:00 PM on those days. Both are closed on Sunday.

Why shop for a GMC Sierra 1500 at Bob Howard Buick GMC in Oklahoma City?

Bob Howard Buick GMC has a 4.5-star rating across 4,065 Google reviews, with 79 in 100 of those reviews five-star. Customers describe their visits in their own words. In a July 2026 Google review, Reace W. wrote: “Worked with Eddie at Buick gmc, he was absolutely amazing. This dealership is lucky to have a sales person like him. Hard to find such a reliable and trustworthy person or dealership these days! I’d be more than happy to purchase from this group for future vehicles. Thanks, Eddie!”

The store sells new Sierra 1500 trucks, offers new Buick and GMC leases alongside new and pre-owned financing, and runs rotating specials on its Buick and GMC models. Its Buick GMC Certified Pre-Owned program includes a 172-point inspection by factory-trained technicians. Start with the Sierra 1500 diesel you want at 13300 Broadway Ext, reserve a test drive online or by phone, and bring your trade-in details so the sales team can set up your numbers.

Bob Howard Buick GMC answers this question against the specific vehicle in front of you rather than the model in general. Value your trade and get pre-approved online, then see us at our Oklahoma City showroom, or call (405) 928-0697.

Disclaimer: Vehicle features, specifications, pricing, options, and availability may vary based on production timelines and dealership inventory; images are for illustrative purposes only. Starting MSRP figures are national and exclude destination freight charges, tax, title, license, and dealer fees. Standard and available equipment varies by trim, configuration, and model year; confirm the specification of the individual vehicle before purchase. Maximum towing and payload ratings depend on cab, bed, drivetrain, and equipment configuration; see the vehicle’s Owner’s Manual and trailering guide for limits. Electric range and charging times vary with battery, configuration, temperature, terrain, load, and driving habits. Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Financing and pre-approval are subject to credit approval. Contact Bob Howard Buick GMC for complete details regarding current vehicle inventory, pricing, and equipment.