2020 GMC Sierra 1500 Owner’s Manual — Vehicle Data

Application

Capacities

Metric

English

Air Conditioning Refrigerant

For the air conditioning system refrigerant type and charge amount, see the refrigerant label under the hood. See your dealer for more information.

Engine Cooling System*

2.7L L4 Engine – 1500 Series

11.8 L

12.4 qt

4.3L V6 Engine – 1500 Series

11.5 L

12.2 qt

5.3L V8 Engine – 1500 Series (L82)

12.8 L

13.5 qt

5.3L V8 Engine – 1500 Series (L84)

13.1 L

13.8 qt

6.2L V8 Engine – 1500 Series

12.6 L

13.3 qt

6.6L V8 Gas Engine – 2500 Series and 3500 Series (L8T)

15.1 L

15.9 qt

Engine Oil with Filter

2.7L L4 Engine – 1500 Series

5.7 L

6.0 qt

Application

Capacities

Metric

English

4.3L V6 Engine – 1500 Series

5.7 L

6.0 qt

5.3L V8 Engine – 1500 Series (L84)

7.6 L

8.0 qt

6.2L V8 Engine – 1500 Series

7.6 L

8.0 qt

6.6L V8 Gas Engine – 2500 Series and 3500 Series

7.6 L

8.0 qt

Fuel Tank

1500 Series Standard and Short Box (4WD Gas and Diesel)

90.8 L

24.0 gal

1500 Series Standard and Short Box (2WD Diesel)

83.3 L

22.0 gal

1500 Series Long Box

106.0 L

28.0 gal

2500 Series and 3500 Series Standard Box (Except Double Cab Diesel)

136.3 L

36.0 gal

2500 Series and 3500 Series Standard Box (Double Cab Diesel)

111.3 L

29.4 gal

2500 Series and 3500 Series Long Box (Except Regular Cab Diesel)

136.3 L

28.0 gal

2500 Series and 3500 Series Long Box (Regular Cab Diesel)

106.0 L

28.0 gal

3500 Series Chassis Cab – Front Tank

89.0 L

23.5 gal

Application

Capacities

Metric

English

3500 Series Chassis Cab – Rear Tank

151.4 L

40.0 gal

Transfer Case Fluid (1500 Series Only)

1.5 L

1.6 qt

Transfer Case Fluid (2500 and 3500 Series Only)

2.3 L

2.4 qt

Wheel Nut Torque

190 Y

140 lb ft

All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.

*Engine cooling system capacity values are based on the entire cooling system and its components.

Engine

VIN Code

Spark Plug Gap

2.7L L4 (L3B)

K

0.65–0.75 mm (0.026–0.030 in)

4.3L V6 (LV3)

H

0.95–1.10 mm (0.037–0.043 in)

5.3L V8 (L82)

F

0.95–1.10 mm (0.037–0.043 in)

5.3L V8 (L84)

D

0.95–1.10 mm (0.037–0.043 in)

6.2L V8 (L87)

L

0.95–1.10 mm (0.037–0.043 in)

6.6L V8 (L8T)

7

0.95–1.10 mm (0.037–0.043 in)

Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the spark plug.