GMC 2003 Savana Owner's Manual page 346

Standard Tank (Passenger and Cargo)
Standard Tank (Cab and Chassis)
Optional Tank* (Cab and Chassis)
* 159 inch wheelbase or 177 inch wheel base only
Air Conditioning Refrigerant Capacity
Air Conditioning Refrigerant R-134a (Front)
Air Conditioning Refrigerant R-134a (Front and Rear)
5-104
Application
QTY Without Rear
Heater
Fuel Tank
31.0 gallons
35.0 gallons
55.0 gallons
1.8 lbs
3.1 lbs
Capacities
QTY With Rear Heater
117.3 L
132.5 L
208.1 L
(0.81 kg)
(1.41 kg)