2026 or 2027 GMC Sierra 1500: what changed for Oklahoma City drivers?
The 2027 GMC Sierra 1500 changes the trim lineup and the starting prices from the 2026. Bob Howard Buick GMC in Oklahoma City shows MSRP, dealer discount and sale price on each new Sierra 1500 on the lot, so you can compare the two model years truck by truck.
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.
Who in Oklahoma City should buy a 2026 Sierra 1500 or a 2027?
A 2026 or a 2027 Sierra 1500 fits the same job, so the choice comes down to which trim and price you want. The 2027 lineup is Pro, Elevation, AT4, AT4X, Denali and Denali Ultimate, while the 2026 lineup included SLE and SLT. Compare the trim you want in each model year before you decide.
On the 2026 side, 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 the manufacturer’s starting prices for each trim, and the store’s sale prices are shown on the lot.
Sales specials run rotating new Buick and GMC specials, so the price you see on a given day can differ from the starting price. Check the MSRP, dealer discount and sale price on the truck you want, not just the starting number.
What did GMC change in the 2027 Sierra 1500 design and cabin?
GMC lists the 2027 Pro with the TurboMax engine and a 10-speed automatic transmission, a 16.3-inch diagonal Premium GMC Infotainment System, a 12.2-inch diagonal Driver Information Center and the Trailering Package as standard. On the 2026 Pro, the 5.3L V8 with a 10-speed automatic was available at extra cost, along with a Graphite Edition and a 10-way power driver seat with power lumbar.
Cabin room on the 2026 Sierra 1500 measures 44.5 inches of legroom in row 1 on Crew Cab models and 43.40 inches in row 2 on Crew Cab. Max cargo runs 62.9 cubic feet in the short bed and 71.7 in the standard bed. The basic warranty is 3 years or 36,000 miles, whichever comes first, and the powertrain warranty is typically 5 years or 60,000 miles.
How do 2027 Sierra 1500 engines differ from the 2026 engines?
For 2027, GMC lists the TurboMax engine as standard on the Pro and Elevation, a 5.7L V8 on the AT4 and Denali, the 3.0L Duramax Turbo-Diesel on the AT4X and a 6.6L V8 on the Denali Ultimate, each with a 10-speed automatic transmission.
On the 2026 Sierra 1500, the 420 hp figure is the maximum available on the Pro, SLE, Elevation, SLT, Denali and AT4 Crew Cab models, and the Denali Ultimate carries 420 hp as standard on Crew Cab 4WD short bed. Check the engine on the exact truck you are comparing, because each trim lists its own engine.
How did the Sierra 1500 trim lineup change from 2026 to 2027?
The 2027 Sierra 1500 trim lineup is Pro, Elevation, AT4, AT4X, Denali and Denali Ultimate. The 2026 lineup included SLE and SLT, so those two trims are not in the 2027 lineup. If you want an SLE or SLT, the 2026 model year is the one that carries it.
The 2026 AT4X starts at $79,600, and the 2026 AT4 starts at $67,000.
What does each Sierra 1500 trim cost for 2026 and for 2027?
Here is the 2026 starting MSRP for each Sierra 1500 trim from GMC: Pro $38,300, SLE $48,700, Elevation $50,500, SLT $55,100, Denali $66,100, AT4 $67,000, AT4X $79,600 and Denali Ultimate $84,400. The starting prices above are the manufacturer’s own figures for the 2026 model year. For 2027, GMC lists the Pro at $39,300, the Elevation at $50,200, the AT4 at $70,700, the Denali at $70,900, the AT4X at $82,700 and the Denali Ultimate at $85,100.
Your price on a given truck depends on the dealer discount and any sale price the store shows on that unit. Compare the MSRP, dealer discount and sale price on the 2027 truck you want against the same trim in 2026.
When is a 2026 or 2027 Sierra 1500 the wrong fit for towing?
A Sierra 1500 towing setup depends on the engine, cab and bed you choose. On the 2026 Sierra 1500 with the Duramax 3.0L Turbo-Diesel, max towing reaches up to 13,300 pounds on a Double Cab standard bed 2WD. The Crew Cab short bed 2WD with the same diesel tows up to 13,100 pounds, with a GCWR of 19,000 pounds.
On the TurboMax engine, max towing runs from 8,800 to 9,400 pounds depending on cab, bed and drive. A Regular Cab long bed 2WD with the TurboMax tows up to 9,400 pounds, with a GCWR of 14,500 pounds.
If you tow a boat or trailer, check the trailer weight, hitch class and GCWR against the truck’s rating before you buy. Pick the engine and cab that match the heaviest load you tow.
What tax and fees apply to a new Sierra 1500 in Oklahoma City?
A new Sierra 1500 bought in Oklahoma City carries the state’s motor vehicle excise tax, set by statute, and title and registration fees. The tax applies the same way to a 2026 and a 2027.
Oklahoma taxes a new vehicle at three and one-fourth percent (3.25%) of its value under 68 O.S. Section 2103 (Oklahoma State Courts Network, 2026). A sales tax of one and twenty-five-hundredths percent (1.25%) also applies under 68 O.S. Section 1355(2) (Oklahoma State Courts Network, 2026), figured on the difference between the trade-in’s value and the sales price where there is a trade-in.
Service Oklahoma charges a Vehicle Title Fee of $11.00 plus a Transfer Fee of $17.00 when a vehicle changes hands, alongside a $1.50 Insurance Fee and a $4.00 VIN Inspection Fee (Service Oklahoma, 2026). Sales hours at the store are Monday to Saturday, 8:30 AM to 9:00 PM, and the store is closed Sunday.
Frequently asked questions
How do I reserve a Sierra 1500 test drive at Bob Howard Buick GMC?
You can reserve a Sierra 1500 test drive online or by contacting the store, which is located at 13300 N Broadway Ext in Oklahoma City, OK 73114.
What warranty comes with a new 2026 or 2027 Sierra 1500?
The basic warranty on a 2026 Sierra 1500 is 3 years or 36,000 miles, whichever comes first. The powertrain warranty on a 2026 Sierra 1500 is typically 5 years or 60,000 miles, whichever comes first, and other durations are available.
Can I use my current truck as a trade-in toward a Sierra 1500?
Trade-in customers can visit with or without an appointment. You can enter the trade-in offer amount into the payment calculator, and the trade-in value is valid for seven days or up to 250 miles.
Can I apply for Sierra 1500 financing online before I visit?
A secure finance application can be completed online before your visit.
Can I lease a new GMC truck at Bob Howard Buick GMC?
Yes. New Buick and GMC leases are available here, next to new and pre-owned financing, and a lessee can buy out the vehicle at any point in the lease.
Which Oklahoma City-area drivers does Bob Howard Buick GMC serve?
The store is in Oklahoma City, and drivers from Midwest City, Del City and Moore are also served. Elsewhere on our site we name Edmond, Arcadia and Midwest City. Staff can help customers in Spanish.
Why compare the 2026 and 2027 Sierra 1500 at Bob Howard Buick GMC?
Bob Howard Buick GMC sells new Sierra 1500 trucks, and we show MSRP, dealer discount, documentation fee and sale price on each new listing. You can reserve a test drive online or by contacting the store, and you can start a secure finance application online before you visit. On Google, the store holds 4.4 stars across 3,983 reviews, and 79 in 100 of those are five-star.
One customer, Madeline M., wrote in a July 2026 Google review: “Michael Griggs is the best salesmen I have ever worked with! Thanks Mike At Bob Howard!” Kailyn R. also praised the store in Google reviews that July 2026, saying: “We had a great experience at Bob Howard’s. Wayne our sales professional was very good and patient during our experience. We found the perfect vehicle. I couldn’t recommend them enough.”
Start with the trim you want, compare its 2026 and 2027 MSRP and sale price on our lot, then book a test drive at 13300 N Broadway Ext, Oklahoma City. Compare the new Sierra 1500 lineup
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.
