GMC 1998 Yukon - Page 271

6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fan(s).
7. By this time, the coolant level inside the r* d d' lator
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.
8. Then replace the pressure cap. At any time during
this procedure
if coolant begins to flow out of the
filler neck, reillstall the pressure cap.
Be sure the
arrows on the pressure
cap line up like this.
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