2020 GMC Sierra 1500 AT4 6.2L V-8
The 2020 GMC Sierra 1500 AT4 6.2L V-8 is a 420-hp 6.2-liter with a gm 10l80 ten-speed automatic and four-wheel drive. It is rated at 17 mpg combined.
| Spec | Value |
|---|---|
| Engine | |
| Engine Type | 6.2L V-8 VVT DI with Dynamic Fuel Management and Stop/Start |
| Displacement | 6.2 L |
| Horsepower | 420 hp |
| Torque | 460 lb-ft |
| Valvetrain | Overhead valve (OHV), two valves per cylinder, variable valve timing |
| Bore and Stroke | 103.25 × 92.0 |
| Injection Type | Direct high-pressure fuel injection with Dynamic Fuel Management |
| Drivetrain | |
| Drive Type | 4WD |
| Transmission | |
| Transmission | GM 10L80 ten-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 | 19 MPG |
| Combined | 17 MPG |
| Recommended Fuel | Regular unleaded gasoline |
| Suspension | |
| Front Suspension | Independent coil-over-shock with twin-tube shock absorbers; Rancho shocks with X31 package |
| Rear Suspension | Solid axle with semi-elliptic, variable-rate, two-stage multileaf springs; splayed twin-tube shock absorbers; Rancho shocks with X31 package |
| Brakes | |
| Front Brake Disc | Four-wheel disc with electro-hydraulic power assist and ABS; vented Duralife rotor; 13.5 in (345 mm) |
| Rear Brake Disc | Four-wheel disc with electro-hydraulic power assist and ABS; vented Duralife rotor; 14.1 in (360 mm) |
| Tires & Wheels | |
| Wheels Front | 18-in × 8.5-in aluminum |
| Wheels Rear | 18-in × 8.5-in aluminum |
| Tires Front | LT275/65R18 Goodyear Wrangler DuraTrac |
| Tires Rear | LT275/65R18 Goodyear Wrangler DuraTrac |
| Dimensions & Weight | |
| Length | 231.7 in |
| Width | 81.2 in |
| Height | 78.4 in |
| Wheelbase | 147.5 in |
| Curb Weight | 5,140 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 | 65.2 in |
| Hip Room Front | 61.2 in |
| Hip Room Rear | 60.2 in |