GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Specifications
Table 2: Crankcase Capacity
Table 3: Fuel Tank Capacity
Table 4: Transmission Fluid Capacity
Table 5: Rear Axle Lubricant Capacity

Engine Specifications

Engine

RPO

Type

Firing Order

7.8L

LG4

V6

1-5-3-6-2-4

Application

Capacities

English

Metric

Cooling System

32.0 quarts

30.3 L

Air Conditioning Refrigerant R134a

2.0 lbs.

0.9 kg

Use Refrigerant Oil, R134a Systems

All capacities are approximate.

Crankcase Capacity

Application

Capacity

Capacity w/o filter

Capacity w/ filter

7.8L

11.0  quarts (10.4 liters)

14.0  quarts (13.2  liters)

Capacities (volumes) shown are for normal refill. Add oil as indicated when the oil filter element is changed. Capacities given are approximate -- keep level within the operating range. Do not operate with fluid level below the ADD line.

Fuel Tank Capacity

Application

Capacities

English

Metric

Standard

50.0  gallons

189.3  liters

Optional*

100.0  gallons

378.5  liters

*Two 50-gallon (189 L) tanks

Above capacities are approximate.

Transmission Fluid Capacity

Application

Capacities

English

Metric

Manual Transmission

  • RT8709B

25.1 pints

11.8 liters

  • FS5406

18.4 pints

8.7 liters

  • FS6406

18.4 pints

8.7 liters

Automatic Transmission

2000 Series

35.0 pints

13.5 liters*

2400 Series

35.0 pints

13.5 liters*

  • MD 3060 P

52.0 pints

24.6 liters

MD 3560 P

52.0 pints

24.6 liters

*Add two pints (one liter) when changing spin-on or remote filter.

Capacities (volumes) are approximate. For manual transmissions, the correct fluid level is to the bottom of the fluid fill plug opening. The fluid capacity will vary, due to the angle of the transmission, with the vehicle. For automatic transmissions, see the Allison Automatic Transmission Operator's Manual for fluid check and maintenance information.

Rear Axle Lubricant Capacity

Application

Capacities

English

Metric

Single Speed Axle

  • 15040S

21.0 pints

10.3 liters

  • 19060S

28.0 pints

13.0 liters

  • 21060S

28.0 pints

13.0 liters

  • 23090S

40.0 pints

19.0 liters

  • 26105S

56.0 pints

26.5 liters

Two-Speed Axle

  • 19060T

34.0 pints

16.0 liters

  • 21060T

34.0 pints

16.0 liters

  • 23080T

40.0 pints

19.8 liters

Tandem Axles

  • DS404 (front)

31.0 pints

14.5 liters

  • RS404 (rear)

28.0 pints

13.0 liters

Above capacities (volumes) are approximate.