Truck shopping has a twist right now: the 2026 GMC Sierra 1500 is still on the lot while the redesigned 2027 GMC Sierra 1500 is just rolling in. At Northtown Buick GMC in Yankton, these questions come up constantly, and each points to a real decision about price, power, or fit. Here are the answers, plus why each matters.
Key Takeaways
- The 2027 Sierra 1500 is a full redesign with two new V8s and a six-trim lineup.
- 2027 pricing starts at $39,300* MSRP for the Pro and reaches $85,100* for the Denali Ultimate.
- The 3.0L Duramax diesel makes 495 lb-ft of torque, and GMC estimates more than 900 highway miles per tank on 2027 models with the available 34-gallon tank.
- Maximum towing is up to 13,300 lbs for 2026 and up to 13,500 lbs for 2027 when properly equipped.
What's Different About the 2027 GMC Sierra 1500?
Almost everything. The 2027 model gets new styling, a new interior, new V8s, and a new infotainment interface.
Look for 7-shaped headlamps. Inside, every trim gets a 16.3-inch touchscreen and a 12.2-inch driver display, and GMC added 12 new standard safety features. Every 2027 engine also pairs with a 10-speed automatic. Why ask? If a 2026 already checks your boxes, it can be a smart buy while the new model ramps up.
What Trim Levels Does the 2026/2027 GMC Sierra 1500 Come In, and What Do They Cost?
The 2026 lineup includes eight trims: Pro, SLE, Elevation, SLT, AT4, AT4X, Denali, and Denali Ultimate. For 2027, SLE and SLT drop off, so the GMC Sierra 1500 trim levels narrow to six. Trim decides which engines you can get.
| Trim | 2026 Starting MSRP* | 2027 Starting MSRP* | 2027 Standard Engine |
|---|---|---|---|
| Pro | $38,600 | $39,300 | 2.7L TurboMax |
| SLE | $49,000 | Not offered | — |
| Elevation | $50,800 | $50,200 | 2.7L TurboMax |
| SLT | $55,400 | Not offered | — |
| AT4 | $68,300 | $70,700 | 5.7L V8 |
| AT4X | $79,900 | $82,700 | 3.0L Duramax |
| Denali | $66,100 | $70,900 | 5.7L V8 |
| Denali Ultimate | $84,400 | $85,100 | 6.6L V8 |
*Starting MSRP reflects the lowest-priced configuration of each trim as listed on GMC.com. MSRP excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Cab, bed, drivetrain, and package combinations will vary. Pricing is subject to change; see Northtown Buick GMC for current details.
What Engine Options Are Available on the Sierra 1500?
Both years offer four engines, with three new or updated for 2027. Here's how the GMC Sierra 1500 engine options compare:
| 2026 Engine | 2027 Engine |
|---|---|
| 2.7L TurboMax: 310 hp / 430 lb-ft | 2.7L TurboMax: 350 hp / 455 lb-ft |
| 5.3L V8: 355 hp / 383 lb-ft | 5.7L V8: 402 hp / 428 lb-ft |
| 6.2L V8: 420 hp / 460 lb-ft | 6.6L V8: 481 hp / 501 lb-ft |
| 3.0L Duramax: 305 hp / 495 lb-ft | 3.0L Duramax: 305 hp / 495 lb-ft |
Asking early keeps you from falling for a trim that doesn't offer the engine you want.
Is the Sierra 1500 Duramax Diesel Worth It?
If you log long highway miles or tow often, it frequently is. The GMC Sierra 1500 diesel delivers its torque low in the rev range, which helps when towing up a grade.
With the available 34-gallon tank, GMC estimates the 2027 diesel can cover more than 900 highway miles per fill-up, and it's rated to tow up to 12,100 lbs. Why ask? Diesel prices, exhaust fluid, and upfront cost decide whether the math works.
How Long Is a GMC Sierra 1500?
It depends on cab and bed. If you're wondering “How long is a GMC Sierra 1500?” GMC lists the 2027 model at roughly 212 to 243 inches. A Crew Cab with the short bed measures about 233 inches, or roughly 19.4 feet, while the standard bed stretches it to about 243 inches. Measure your garage before you shop.
What Gas Mileage Does the GMC Sierra 1500 Get?
Your GMC Sierra 1500 gas mileage depends heavily on the engine. GMC lists the 2026 TurboMax at an EPA-estimated 18 city/21 highway mpg, and the 2026 4WD diesel models are rated at 22/26 mpg. 2027 EPA ratings aren't out yet. Asking helps you budget real yearly fuel costs.
What Bed Sizes Does the Sierra 1500 Offer?
For 2026, choose a 5-foot-10-inch short bed, a 6-foot-7-inch standard bed, or an 8-foot-2-inch long bed. Your GMC Sierra 1500 bed size is tied to your cab: Crew Cabs offer the short or standard bed, while the long bed is reserved for the Regular Cab. For 2027, GMC lists cargo volume at 62.9 cubic feet for the short bed, 71.7 cubic feet for the standard, and 89.1 cubic feet for the long bed.
How Much Can the GMC Sierra 1500 Tow?
The 2026 model tows up to 13,300 lbs with the Duramax diesel, and the 2027 raises that to 13,500 lbs with the 5.7L V8, both when properly equipped. Why ask? That maximum applies to one specific setup. A 2027 Crew Cab TurboMax tops out at 9,200 lbs, so match your trailer to the exact truck.
Getting the Answers You Need Before You Buy
The right Sierra fits how you actually work and play. Whether you're searching for a GMC Yankton, SD, or a GMC dealer Sioux Falls drivers can easily reach, Northtown Buick GMC can compare both model years with you. Browse our Sierra 1500 inventory or contact our team to ask any of these questions in person.
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