2023 GMC Sierra 1500 AT4X
The 2023 GMC Sierra 1500 AT4X is a 420-hp 6.2-liter with a 10l80 10-speed automatic and four-wheel drive.
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | 6.2L V-8 VVT DI with Dynamic Fuel Management (standard); 3.0L Diesel optional (not AT4X) |
| Displacement | 6.2 L |
| Horsepower | 420 hp |
| Torque | 460 lb-ft |
| Valvetrain | Overhead valve, 2 valves per cylinder, variable valve timing |
| Bore and Stroke | 103.25 x 92.0 |
| Injection Type | Direct high-pressure fuel injection with Dynamic Fuel Management |
| Drivetrain | |
| Drive Type | 4WD (standard) |
| Transmission | |
| Transmission | 10L80 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 | 3.42 |
| Fuel Economy | |
| City | 14 MPG |
| Highway | 17 MPG |
| Suspension | |
| Front Suspension | Independent coil-over-shock with twin-tube shock absorbers Rancho shocks standard (X31 / AT4X off-road package) |
| Rear Suspension | Solid axle with semi-elliptic variable-rate two-stage multileaf springs, splayed twin-tube shock absorbers Rancho shocks standard (X31 / AT4X off-road package) |
| Brakes | |
| Front Brake Disc | 13.0 x 1.18 in (330 x 30 mm) vented disc |
| Rear Brake Disc | 13.6 x 0.79 in (345 x 20 mm) disc |
| Tires & Wheels | |
| Wheels Front | 18-in. x 8.5-in. aluminum (gloss black) |
| Wheels Rear | 18-in. x 8.5-in. aluminum (gloss black) |
| Tires Front | LT275/65R18 Goodyear Wrangler DuraTrac |
| Tires Rear | LT275/65R18 Goodyear Wrangler DuraTrac |
| Dimensions & Weight | |
| Length | 231.9 in |
| Width | 81.2 in |
| Height | 78.3 in |
| Wheelbase | 147.5 in |
| Ground Clearance | 11.1 in |
| Curb Weight | 5,780 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 |