2026 GMC Sierra 1500 SLT
The 2026 GMC Sierra 1500 SLT is a 355-hp 5.3-liter V8 with a 10-speed automatic and four-wheel drive. It starts at $55,100 MSRP and is rated at 16 mpg combined.
It makes 355 horsepower and 383 lb-ft of torque. EPA fuel-economy estimates are 15 mpg city and 18 mpg highway (16 mpg combined).
The Sierra 1500 measures 231.9 inches long on a 147.4-inch wheelbase and has a curb weight of 5,070 lb.
| Spec | Value |
|---|---|
| Price | |
| MSRP | $55,100 |
| MSRP with Destination | $57,895 |
| Destination Charge | $2,795 |
| Engine | |
| Engine Type | 5.3L EcoTec3 V8 with 10-speed automatic |
| Displacement | 5.3 L |
| Horsepower | 355 hp |
| Torque | 383 lb-ft |
| Valvetrain | OHV, 2 valves/cyl, variable valve timing, Dynamic Fuel Management |
| Bore and Stroke | 96 x 92 |
| Injection Type | Direct high-pressure fuel injection with Dynamic Fuel Management |
| Drivetrain | |
| Drive Type | 2WD or 4WD |
| Differential Type | 3.23 axle ratio (5.3L; 3.42 with Max Trailering Package) |
| Transmission | |
| Transmission | 10-speed automatic |
| 1st Gear | 4.7 |
| 2nd Gear | 2.99 |
| 3rd Gear | 2.15 |
| 4th Gear | 1.77 |
| 5th Gear | 1.52 |
| 6th Gear | 1.28 |
| 7th Gear | 1 |
| 8th Gear | 0.85 |
| 9th Gear | 0.69 |
| 10th Gear | 0.64 |
| Reverse | 4.87 |
| Final Drive | 3.23 |
| Fuel Economy | |
| City | 15 MPG |
| Highway | 18 MPG |
| Combined | 16 MPG |
| Recommended Fuel | Regular unleaded |
| Suspension | |
| Front Suspension | Independent coil-over-shock with twin-tube shock absorbers |
| Rear Suspension | Solid axle with semi-elliptic variable-rate two-stage multileaf springs, splayed twin-tube shock absorbers |
| Brakes | |
| Front Brake Calipers | Four-wheel disc with electro-hydraulic power assist and ABS; vented Duralife rotors |
| Front Brake Disc | 13.0 x 1.18 in / 330 x 30 mm (Duralife vented) |
| Rear Brake Disc | 13.6 x 0.79 in / 345 x 20 mm (Duralife vented) |
| Tires & Wheels | |
| Wheels Front | 20 x 9-in. aluminum |
| Wheels Rear | 20 x 9-in. aluminum |
| Tires Front | P275/60R20 all-season or all-terrain |
| Tires Rear | P275/60R20 all-season or all-terrain |
| Dimensions & Weight | |
| Length | 231.9 in |
| Width | 81.2 in |
| Height | 75.5 in |
| Wheelbase | 147.4 in |
| Ground Clearance | 8 in |
| Cargo Volume | 62.9 ft³ |
| Curb Weight | 5,070 lbs |
| Interior | |
| Headroom Front | 43 in |
| Headroom Rear | 40.1 in |
| Legroom Front | 44.5 in |
| Legroom Rear | 43.4 in |
| Shoulder Room Front | 66 in |
| Shoulder Room Rear | 65.1 in |
| Hip Room Front | 61.2 in |
| Hip Room Rear | 60.2 in |