2021 Chevrolet Silverado 1500 5.3L V8 Specs
4th gen (T1) · Updated Sep 2026
- Horsepower
- 355 hp
- 383 lb-ft
- Max towing
- 11,500 lb
- properly equipped
- Oil capacity
- 8.0 qt
- with filter
- Oil type
- SAE 0W-20 (dexos1)
- Tire size
- P255/70R17
- MPG combined
- 19 mpg
Specs #specs
The 2021 Chevrolet Silverado 1500 5.3L V8 makes 355 hp at 5,600 rpm and 383 lb-ft of torque at 4,100 rpm.
The 2021 Chevrolet Silverado 1500 5.3L V8 can tow up to 11,500 lb when properly equipped.
| Horsepower | 355 hp @ 5,600 rpm |
|---|---|
| Torque | 383 lb-ft @ 4,100 rpm |
| Transmission | 8-speed automatic, 10-speed automatic |
| Drivetrain | 2WD or 4WD |
| Max towing | 11,500 lb |
Engine #engine
| Engine | 5.3L EcoTec3 V8 (L84) |
|---|---|
| Engine code | L84 |
| Displacement | 5.3 L |
| Cylinders | V8 |
| Aspiration | Naturally aspirated |
| Fuel | Gasoline |
Oil capacity & fluids #oil-capacity
The 2021 Chevrolet Silverado 1500 5.3L V8 takes 8.0 quarts of SAE 0W-20 (dexos1) oil with a filter change.
| Engine oil (with filter) | 8.0 qt |
|---|---|
| Oil type | SAE 0W-20 (dexos1) |
| Coolant | 13.8 qt |
| Transfer case (4WD) | 1.6 qt |
| Fuel tank | 24.0 gal (standard and short box), 28.3 gal (long box) |
Wheels & tires #tire-size
The 2021 Chevrolet Silverado 1500 5.3L V8 comes with P255/70R17 tires.
| Tire size | P255/70R17 |
|---|---|
| Wheel size | 17 in (LT) |
| Lug nut torque | 140 lb-ft |
Fuel economy #mpg
| City | Highway | Combined | |
|---|---|---|---|
| 2WD, 8-speed | 17 | 23 | 19 |
| 4WD, 8-speed | 16 | 22 | 18 |
| 4WD, 10-speed | 16 | 22 | 19 |
Maintenance schedule #maintenance
| Engine oil & filter (Oil Life System, at least) | 12 mo |
|---|---|
| Cabin air filter | 22,500 mi / 24 mo |
| Spark plugs | 97,500 mi |
| Transfer case fluid (4WD) | 97,500 mi |
| Engine coolant | 150,000 mi / 60 mo |
| Brake fluid | 60 mo |
8 recalls for the 2021 Chevrolet Silverado 1500 →
FAQ
How much oil does a 2021 Silverado 5.3 take?
The 5.3L V8 takes 8.0 quarts of dexos1 SAE 0W-20 including the oil filter.
How much can a 2021 Silverado 5.3 tow?
Up to 11,500 lb with the Max Trailering Package.
Sources: 2021 Chevrolet Silverado 1500 Owner's Manual, 2021 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement, 2021 Silverado 1500 Max Trailering chart (Chevrolet), 2021 Chevrolet Silverado 1500 brochure, EPA fueleconomy.gov, NHTSA recalls. Updated Sep 2026.