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Approximate Fluid Capacities

The following approximate capacities are given in US English and metric conversions. See Fluid and Lubricant Recommendations (USA and Canada)  for more information. All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.

Application Capacities
Metric US English
Cooling System - Gasoline
  • 4.3L
9.5 liters 10.0 quarts
  • 4.8L, 5.3L
11.7 liters 12.4 quarts
  • 6.0L
13.1 liters 13.8 quarts
Cooling System with Rear Heat - Gasoline
  • 4.3L
12.3 liters 13.0 quarts
  • 4.8L, 5.3L
14.6 liters 15.4 quarts
  • 6.0L
16.1 liters 17.0 quarts
Cooling System - Diesel
  • Front Heat or A/C Only
20.0 liters 21.1 quarts
  • Front Heat or A/C Plus Fuel Operated Heater (FOH)
20.9 liters 22.1 quarts
  • Front and Rear Heat or A/C Only
21.5 liters 22.7 quarts
  • Front and Rear Heat or A/C Plus Fuel Operated Heater (FOH)
22.4 liters 23.7 quarts
Engine Oil with Filter
  • 4.3L
4.3 liters 4.5 quarts
  • 4.8L/5.3L/6.0L
5.7 liters 6.0 quarts
  • 6.6L
9.5 liters 10.0 quarts
Rear Drive Axle
  • 8.6 inch Rear Axle
2.03 liters 2.15 quarts
  • 9.5 inch Rear Axle
2.60 liters 2.75 quarts
  • 9.75 inch Rear Axle
2.96 liters 3.13 quarts
  • 10.5/10.75 inch Rear Axle
3.13 liters 3.31 quarts
Front Drive Axle 7.25 1.20 liters 1.27 quarts
Fuel Tank
  • Standard Tank - Passenger/Cargo
117.3 liters 31.0 gallons
  • Standard Tank - Cab/Chassis
124.9 liters 33.0 gallons
  • Optional Tank - 159 inch (4039 mm) or 177 inch (4496 mm)
215.7 liters 57.0 gallons
Automatic Transmission
  • Pan Removal - 4L60-E
4.7 liters 5 quarts
  • Dry - 4L60-E
  • 8.3 liters with 245 converter
  • 9.17 liters with 258 converter
  • 10.6 liters with 298 converter
  • 8.8 quarts with 245 converter
  • 9.7 quarts with 258 converter
  • 11.2 quart with 298 converter
Automatic Transmission Fluid - 6L80-E/6L90-E
  • Pan Removal - Approximate Capacity 6L80
5.7 liters 6.0 quarts
  • Overhaul - Approximate Capacity 6L80
9.9 liters 10.5 quarts
  • Complete Transmission System Fluid Capacity 6L80
11.7 liters 12.4 quarts
  • Pan Removal - Approximate Capacity 6L90
6.0 liters 6.3 quarts
  • Overhaul - Approximate Capacity 6L90
9.9 liters 10.5 quarts
  • Complete Transmission System Fluid Capacity 6L90
11.7 liters 12.4 quarts
Transfer Case 1.4 liters 1.5 quarts