GMC Sierra 1500 crew cab or double cab: which fits Oklahoma City drivers?

The crew cab fits the Oklahoma City household that puts adults in the second row most weeks, and the double cab fits the driver who mostly rides alone or in pairs and only now and then needs the back seat. The double cab does not fit an Oklahoma City family that seats grown passengers behind the front row every week, and the crew cab is the wrong spend for a driver who never uses that room.

Most of what buyers weigh on a Sierra 1500 does not change with the cab at all. Engine, drivetrain, and trim set the mpg, the tow rating, and the sticker price, so the cab choice comes down to who rides in the back and how often. We walk through that below for Oklahoma City drivers.

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.

Oklahoma City households that carry adults need the second row first

If the back seat holds adults most weeks, start with the crew cab, because rear-seat room is the one thing the cab choice truly settles.

Think about who rides with you in Oklahoma City. A family with two teenagers, a crew heading to a job site together, or a couple who drives parents to Sunday dinner all use the second row as a real seat. For those buyers, a tight back seat becomes a daily complaint. They feel it on every school run and every long drive to Edmond or beyond.

The crew cab is the roomier of the two cabs, and that is the point of it. Sit in the second row of each cab on the lot with the people who will actually ride there. Bring the tallest passenger, and bring a child seat if you use one. Five minutes in the back seat answers this better than any page can.

A driver who hauls tools, dogs, and groceries behind the front seats has a different need. For that buyer the back seat is a shelf, and the double cab does that job well. The Sierra 1500 lists maximum cargo of 62.9 cu ft with the short bed and 71.7 cu ft with the standard bed, so think about what you load and whether it sits behind the seats or in the bed.

The daily Oklahoma City drive is decided by the engine, not the cab

For the commute, the cab choice barely moves your fuel bill, because EPA combined mpg depends on the engine and drivetrain. The Sierra 1500 is certified at 15 to 20 mpg combined on gasoline, 19 to 25 mpg combined on diesel, and 17 mpg combined on flex fuel (EPA certification).

That spread is large. A driver who spends most weekdays in stop-and-go traffic on the corridors into Oklahoma City sees the diesel range top out at 25 and the gasoline range top out at 20. Pick your cab for seating, then pick your engine for the miles you drive.

A buyer who commutes alone in a Sierra 1500 gains nothing from a bigger cab on the commute. A buyer who carries a carpool does. The first buyer should look at the double cab and put the savings of attention into the engine. The second should start with the crew cab.

A weekend trailer out of Oklahoma City is set by the configuration

For towing, the cab is only one input.

That means no one can promise you a tow rating from the cab name alone. A boat trip to the lake, a camper for a long weekend, or a flatbed of equipment each ask for a specific number. Write down the weight you plan to pull. Then ask us to read the rating for the exact truck you are looking at.

The Sierra 1500 lists 420 hp as its top horsepower, and the rated range tells the same story. Towing capability moves with the powertrain and equipment, and the cab you pick sits alongside those choices. A double cab and a crew cab can both be set up for a serious trailer.

Here is how the figures sort the decision.

Read the table by buyer. Passengers and legroom point you to a cab. Towing, mpg, and horsepower point you to an engine and a build. A driver who answers the first two with “rarely” and the last three with “often” can happily take the double cab and spend the attention on the powertrain.

What a Sierra 1500 costs an Oklahoma City buyer once the state adds its charges

Trim moves the number far more than cab choice does, so shop the trim you want and then compare cabs within it.

Then the state adds its own charges. Oklahoma taxes a new vehicle mainly through an excise tax, set at 3 1/4% of its value under 68 O.S. Section 2103 (Oklahoma State Courts Network, 2026). That tax runs late after the thirtieth day, and a penalty of $1.00 a day then builds up, so plan to register soon after you buy.

At the tag counter, a Vehicle Title Fee of $11.00 and a Transfer Fee of $17.00 apply, alongside a $1.50 Insurance Fee and a $4.00 VIN Inspection Fee (Service Oklahoma, 2026). Those are small beside the sticker, yet they belong in the budget you set before you shop.

Then there is insurance, which is a yearly cost you carry for as long as you drive. A truck you finance will need full coverage, so use the higher monthly figure when you plan.

Add it up in this order: the trim you want, the state charges at registration, and a year of insurance. Cab choice sits inside that plan as one more line to compare, never as the thing that drives the total.

What we offer an Oklahoma City buyer choosing a Sierra 1500 cab

At Bob Howard Buick GMC, we want you to choose a cab with the facts in front of you. Our new listings show MSRP, dealer discount, documentation fee, and sale price per stock unit, so you can read the real numbers on the truck you want. Some new units are also flagged as courtesy transportation vehicles.

If a truck needs warranty repair, CarBravo lists courtesy transportation, so a service visit does not have to leave you without a ride. And if your current vehicle is a lease, we run a Buick GMC lease return center that accepts returns no matter where the lease began. A leased Buick GMC vehicle can also be bought out at any time during the lease.

A Google review of us from October 2026 by Deb T. reads: “As always, Chad was terrific. He takes such good care of our GMC Acadia. I have never had a negative experience with either the service department or the parts department.”

That is the kind of low-pressure help we aim for on the Broadway Extension corridor. Bring your passenger list and your trailer weight, and we will line them up with the trucks on our lot.

Do rear doors make a crew cab easier for car seats?

The crew cab gives the back seat more room than the double cab. GMC lists second-row legroom of 43.40 inches on the crew cab and 35.24 inches on the double cab for the 2026 Sierra 1500.

Legroom is the number to start with when a car seat has to fit behind the front seats. Door openings are a separate measure, so test them with your own seat in the exact truck. Bring the seat, buckle it in the back, and check the door swing before you sign anything.

Which Sierra 1500 bed lengths come with each cab?

GMC’s trailering chart lists the crew cab with a short bed and with a standard bed. It lists the double cab with a standard bed. For the 2026 Sierra 1500, GMC gives maximum cargo of 62.9 cu ft for the short bed and 71.7 cu ft for the standard bed.

The bed you choose sets your cargo room, and the cab you choose sets your rear seat. Pick the cab for the people who ride with you, then pick the bed for the load.

Is a Sierra 1500 crew cab harder to park in Oklahoma City?

The cab name alone does not set how big the truck is. The bed plays a bigger part, and GMC’s trailering chart pairs the crew cab with a short bed as well as a standard bed. If the spot you park in is tight, the short bed is the choice to look at first, and it gives you 62.9 cu ft of cargo room.

Measure your garage, your driveway and the parking spots you use most against the truck’s length for the exact build you want. Do that before you decide. Waiting until after the truck is in the driveway is too late.

How much more does a Sierra 1500 crew cab cost than a double cab?

GMC does not publish a separate price for each cab. Starting prices are set by trim, so the cab does not show up as its own number on the sticker. The Pro starts at $38,300, the SLE at $48,700, the Elevation at $50,500, the SLT at $55,100, the Denali at $66,100, the AT4 at $67,000, the AT4X at $79,600 and the Denali Ultimate at $84,400.

Pick the trim first, because the trim sets the starting price. Then ask for the price of each cab on that same trim before you decide. That gives you the real difference on the truck you want.

Frequently asked questions

Can I apply for financing before I pick a cab?

Yes. A secure finance application can be completed online. Many buyers do this first so they know their range before they compare crew cab and double cab trucks.

Does the warranty change between the crew cab and the double cab?

The Sierra 1500 carries a basic warranty of 3 years or 36,000 miles, whichever comes first. The powertrain warranty is typically 5 years or 60,000 miles, whichever comes first, but other durations are available. Ask us to confirm the terms on the specific truck you choose.

Does Oklahoma require a safety inspection or emissions test?

Service Oklahoma’s published fee schedule carries no charge for a periodic safety inspection or an emissions test (Service Oklahoma, 2026). It does list a $4.00 VIN Inspection Fee, so budget for the VIN fee when you register.

Does a certified Sierra 1500 come with a history report?

Buick, GMC CPO vehicles come with a complimentary vehicle history report. That helps an Oklahoma City buyer who wants a used truck with a record to read. Ask us which certified Sierra 1500 trucks are on the lot.

How much horsepower does the Sierra 1500 make?

The manufacturer lists 420 hp as the top horsepower for the Sierra 1500. The engine in a given truck sets its number, so check the window sticker on the exact unit. The cab you pick does not change the question.

What mpg does the flex fuel Sierra 1500 get?

The flex fuel Sierra 1500 is certified at 17 mpg combined (EPA certification). A driver who wants better mileage should compare that with the diesel range of 19 to 25 mpg combined. Ask us to show the engine options on the trucks we have.

The crew cab fits Oklahoma City families, and the double cab fits solo drivers

For an Oklahoma City household that carries adults behind the front seats every week, the crew cab is the right Sierra 1500. For an Oklahoma City driver who rides alone or with one passenger and wants the same engines, towing range, and trims, the double cab does the job. Whichever cab you pick, set your engine by your miles and your tow rating by your trailer, because those figures do more work than the cab name.

Bob Howard Buick GMC is the Sierra 1500 store on Broadway Extension

We sell new, used, and certified pre-owned Buick and GMC vehicles, and we run a full service, parts, and financing operation. Our customers rate us 4.4 stars across 3,983 Google reviews (Google, 2026). We are part of Group 1 Automotive, which posted record full-year revenue of $22.6 billion, up 13.2%, and sold 459,000 new and used vehicles, a company record (Group 1 Automotive, 2026).

See our current Sierra 1500 inventory at Bob Howard Buick GMC.

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.