Coolant Surge Tank Pressure Cap - GMC SIERRA DENALI 2002 Manual

Adding Coolant
If you need more coolant, add the proper DEX
coolant mixture at the surge tank, but only when the
engine is cool.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
When replacing the pressure cap, make sure it is
-
hand tight.
6-30

Coolant Surge Tank Pressure Cap

R
-
COOL
NOTICE:
Your coolant surge tank pressure cap is a 15 psi
(105 kPa) pressure
installed to prevent coolant loss and possible
engine damage from overheating.
The coolant surge tank
pressure cap must be fully
installed on the coolant
surge tank.
-
type cap and must be tightly