Sierra 1500
Sierra 1500
Model Year Comparison
2027 GMC Sierra 1500 vs 2026 GMC Sierra 1500
The 2027 GMC Sierra 1500 and the 2026 GMC Sierra 1500 give truck buyers two model years to consider when shopping for their next pickup. Both offer the dependable performance GMC is known for, with features designed to handle daily driving and demanding work with confidence. Take a look below to see how the two model years compare.
Compare for Yourself
2027 GMC Sierra 1500 vs. 2026 GMC Sierra 1500 — key specs side by side
2027 GMC Sierra 1500
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2026 GMC Sierra 1500
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| Base Gas V8 Horsepower | 402 hp | 355 hp |
| Max Towing | 13,500 pounds1 | 13,300 pounds1 |
| Maximum Display Area | More than 60 inches combined2 | 40 inches combined |
| Base Transmission | 10-speed automatic | 8-speed automatic |
| Fuel Tank | Available 34 gallons (approx.) | 24 gallons |
The Verdict
The New 2027 GMC Sierra 1500 Builds On The Success Of Last Year
Both the 2027 GMC Sierra 1500 and the 2026 GMC Sierra 1500 are great choices for truck buyers. However, the 2027 model has a slight edge with its higher horsepower and towing capacity. Its 10-speed automatic transmission and larger available fuel tank make it an even more appealing option. Either way, you know you're getting a quality work truck.
Shop New 2027 Sierra 1500Frequently Asked Questions
How much horsepower does the 2027 GMC Sierra 1500 have compared to the 2026?
The 2027 GMC Sierra 1500's new 5.7L V8 produces 402 horsepower and 428 lb-ft of torque. The base gas V8 in the 2026 Sierra 1500, a 5.3L, produces 355 horsepower.
Can the 2027 Sierra 1500 tow more than the 2026 Sierra 1500?
Yes. When properly equipped, the 2027 GMC Sierra 1500 can tow up to 13,500 pounds with the 5.7L V8, compared to a maximum of 13,300 pounds for the 2026 Sierra 1500.
What transmission does the 2027 GMC Sierra 1500 use?
Every 2027 Sierra 1500 engine is paired with a 10-speed automatic transmission, including the base 2.7L TurboMax, which used an 8-speed automatic in the 2026 model.
Does the 2027 Sierra 1500 have a bigger fuel tank?
Yes. A new 34-gallon (approx.) fuel tank is available on 2027 Sierra 1500 Double Cab and Crew Cab models with the V8 engines and the Duramax 3.0L Turbo-Diesel.
Where can I compare the 2027 and 2026 GMC Sierra 1500 near Columbus, OH?
Twins Buick GMC is located at 960 Morse Road, Columbus, OH 43229. Browse our new Sierra 1500 inventory online or contact us to schedule a test drive.
Compare the Sierra 1500 at Twins Buick GMC
Visit Twins Buick GMC at 960 Morse Road, Columbus, OH 43229 — Monday–Thursday 9 AM–8 PM; Friday and Saturday 9 AM–6 PM; Sunday 12 PM–5 PM.
1 Maximum trailering ratings are intended for comparison purposes only. Before you buy a vehicle or use it for trailering, carefully review the trailering section of the Owner’s Manual. The trailering capacity of your specific vehicle may vary. The weight of passengers, cargo and options or accessories may reduce the amount you can trailer.
2 Based on latest competitive data available. Excludes other GM vehicles. More than 60 inches of combined digital displays on 2027 Sierra 1500 Denali Ultimate, including the available 11.5-inch diagonal Passenger Infotainment Center display.
2027 GMC Sierra 1500 specifications sourced from GMC; 2026 GMC Sierra 1500 specifications sourced from gmc.com. 13,500-lb. rating: properly equipped 2027 Sierra 1500 5.7L V8 Double Cab 4WD. Twins Buick GMC, 960 Morse Road, Columbus, OH 43229.