2021 Chevrolet Silverado 1500 specs & fitment
4th generation. The 2021 Chevrolet Silverado 1500 has bolt pattern 6x139.7 (78.1 mm bore), oil 0W-20, 5W-30, tires 255/70R17, 265/65R18 and more.
Wheels & bolt pattern
- Bolt pattern
- 6x139.7 (6x5.5")
- Lug count
- 6
- Center bore
- 78.1 mm
Applies across the 4th generation; based on 4 source records from other years of this generation.
Source: ANKUSI Wheel Fitment Dataset (CC BY 4.0). How to read a bolt pattern.
Engines & fuel economy
| Engine | Horsepower | Fuel | MPG city | MPG hwy | MPG combined | Drive |
|---|---|---|---|---|---|---|
| 2.7L 4-cyl turbo | 310 | Regular Gasoline | 19–20 | 22–23 | 20–21 | 4-Wheel Drive, Rear-Wheel Drive |
| 3.0L 6-cyl turbo diesel | 275 | Diesel | 22–23 | 26–33 | 24–27 | 4-Wheel Drive, Rear-Wheel Drive |
| 4.3L 6-cyl | 285 | Regular Gasoline | 14–16 | 16–21 | 15–17 | 4-Wheel Drive, Rear-Wheel Drive |
| 5.3L 8-cyl | 355 | Regular Gasoline (E85 capable) | 13–17 | 17–23 | 14–19 | 4-Wheel Drive, Rear-Wheel Drive |
| 6.2L 8-cyl | 425 | Premium Gasoline | 14–16 | 19–21 | 16–18 | 4-Wheel Drive |
Source: EPA fueleconomy.gov; horsepower from EPA fuel-economy test-car data.
Tire sizes
| Size | Trim | Source |
|---|---|---|
| 255/70R17 | LT WT | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| 265/65R18 | LT LTZ RST | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| 265/70R17 | LT WT | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| 275/50R22 | Custom High Country LT LTZ RST | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| 275/60R20 | Custom High Country LT LTZ RST | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| LT265/60R20 | Custom Trail Boss LT Trail Boss | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| LT265/70R17 | LT WT | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
| LT275/65R18 | Custom Trail Boss LT LT Trail Boss WT | TirePressure.com: 2021 Chevrolet Silverado 1500 Tire Pressure third-party |
Engine oil type & capacity
| Engine | Oil grade | Capacity with filter | Source |
|---|---|---|---|
| 2.7L L4 L3B (aluminum oil pan) | 5W-30 | 5.5 qt (5.2 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
| 2.7L L4 L3B (plastic oil pan) | 5W-30 | 6.0 qt (5.7 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
| 3.0L L6 Diesel LM2 | 0W-20 | 7.0 qt (6.6 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
| 4.3L V6 LV3 | 5W-30 | 6.0 qt (5.7 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
| 5.3L V8 L82, L84 | 0W-20 | 8.0 qt (7.6 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
| 6.2L V8 L87 | 0W-20 | 8.0 qt (7.6 L) | GM TechLink: 2021 Engine Oil Capacities (with filter), p. 1 |
What 0W-20 and 5W-30 mean · Silverado 1500 oil capacity by year
Battery & wiper blades
- Battery (2.7L turbo)
- Group 94R (H7), AGM low confidence Third-party battery research (autopadre.com, autofiles.com, forums); AutoPadre: Silverado 1500 battery size
- Battery (5.3L V8)
- Group 94R (H7), AGM low confidence Third-party battery research (autopadre.com, autofiles.com, forums); AutoPadre: Silverado 1500 battery size
- Battery (6.2L V8)
- Group 94R (H7), AGM low confidence Third-party battery research (autopadre.com, autofiles.com, forums); AutoPadre: Silverado 1500 battery size
- Battery (3.0L Duramax diesel)
- Group 49 (H8), AGM low confidence Third-party battery research (autopadre.com, autofiles.com, forums)
- Battery (4.3L V6)
- Group 48 (H6) low confidence Third-party battery research (autopadre.com, autofiles.com, forums); AutoPadre: Silverado 1500 battery size
- Wiper blades
- Driver 22", passenger 22" third-party Rain-X Blade Size Finder: 2021 Chevrolet Silverado 1500
Verify group size on your battery label or owner's manual before purchasing.
Dimensions & weight
- Length
- 211.0–241.3 in (5360–6130 mm)
- Width
- 81.1 in
- Height
- 75.6 in
- Wheelbase
- 126.4–156.7 in
- Curb weight
- 4409–4868 lb
10 body/drive variants measured by Transport Canada (Canadian Vehicle Specifications).
Safety: recalls, complaints, crash ratings
- Recalls
- 8
- Owner complaints
- 839
- NCAP overall
- 4–5 stars
| Tested variant | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| 2021 Chevrolet Silverado 1500 PU/CC 4WD | 4 | 4 | 5 | 4 |
| 2021 Chevrolet Silverado 1500 PU/EC 4WD | 5 | 4 | 5 | 4 |
| 2021 Chevrolet Silverado 1500 PU/RC 4WD | 5 | 4 | 5 | 4 |
| 2021 Chevrolet Silverado 1500 PU/CC 2WD | 4 | 4 | 5 | 4 |
| 2021 Chevrolet Silverado 1500 PU/EC 2WD | 5 | 4 | 5 | 4 |
| 2021 Chevrolet Silverado 1500 PU/RC 2WD | 5 | 4 | 5 | 4 |
Recall campaigns (8)
- 26V083000 2026-02-12: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
- 25V274000 2025-04-24: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
- 24V797000 2024-10-24: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
- 21V985000 2021-12-16: TIRES:TEMPORARY/EMERGENCY SPARE TIRE
- 21V495000 2021-07-01: AIR BAGS:FRONTAL
- 20V811000 2020-12-23: SEAT BELTS
- 20V792000 2020-12-17: SEAT BELTS
- 20V684000 2020-11-05: TIRES
Source: NHTSA recalls, complaints and NCAP APIs.