GM Service Manual Online
For 1990-2009 cars only

Approximate Fluid Capacities for GMC Truck Savana (CNG) 2001

Engine Cooling System

5.7L (VIN R) With RPO KL6 without rear heat

16.6 L (17.5 qts)

5.7L (VIN R) With RPO KL6 with rear heat

18.9 L (20 qts)