product.specifications
specs.engine_size6.2 L
specs.fuel_typeRegular
specs.transmission10 speed automatic
specs.drivetrain4-Wheel Drive
specs.combined_mpg17 MPG
product.comparison_title
| GMC Sierra 4WD AT4 product.this_vehicle | GMC Sierra 4WD |  Ford Ranger 4WD |  Honda Ridgeline AWD |  Nissan Frontier 2WD |  GMC Canyon 2WD | |
|---|---|---|---|---|---|---|
| product.price | — | — | $35,300–$57,350 | — | $29,770–$43,170 | $30,000–$45,000 |
| specs.engine_capacity | 6.2 L | 3L | 2.7L | 3.5L | 3.8L | 2.7L |
| specs.fuel_type | Regular | Diesel | Regular | Regular | Regular | Regular |
| specs.transmission | 10 speed automatic | Automatic 10-spd | Automatic (S10) | Automatic (S9) | Automatic (S9) | Automatic 8-spd |
| specs.body_type | Pickup Truck | Standard Pickup Trucks 4WD | Standard Pickup Trucks 4WD | Standard Pickup Trucks 4WD | Standard Pickup Trucks 2WD | Small Pickup Trucks 2WD |
product.about
The 2021 GMC Sierra 4WD AT4 is a certified truck built for capability, boasting a powerful 6.2L V8 engine and 4-wheel drive for confident performance. With a robust build and a clean safety record, this Sierra is ready for demanding tasks.
product.pros
- Certified safety status
- No recalls on record
- No complaints on record
- Impressive 10.8-inch ground clearance
- Powerful 420 hp engine
product.cons
- Below-average fuel economy
- Higher fuel costs estimated
product.complaints_section
product.no_complaints
product.submit_complaintproduct.discussion0 product.comments
product.no_discussion
product.status_history
status.uncertain→status.certified27 May 2026
Lemon Score: 100. 0 data points. v3 scoring.