GMC 2012 Savana - Manual (Page 288)

Black plate (22,1) GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
10-22 Vehicle Care
If a hiss is heard, wait for that to
stop. A hiss means there is still
some pressure left.
2. Keep turning the pressure cap,
but now push down as you turn
it. Remove the pressure cap.
3. Fill the radiator with the proper
DEX-COOL coolant mixture, up
to the base of the filler neck.
See Recommended Fluids and
Lubricants on page 11‑12 for
more information about the
proper coolant mixture.
4. Fill the coolant recovery tank to
the COLD FILL mark.
5. Reinstall the cap back on the
coolant recovery tank, but leave
the radiator pressure cap off.
6. Start the engine and let it run
until the upper radiator hose can
be felt getting hot. Watch out for
the engine cooling fan.
7. By this time, the coolant level
inside the radiator filler neck
may be lower. If the level is
lower, add more of the proper
DEX-COOL coolant mixture
through the filler neck until the
level reaches the base of the
filler neck.