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How to add coolant to the radiator – GMC 2003 Envoy User Manual

Page 328

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How to Add Coolant to the Radiator

You can remove ihg radiater pressure cap whan
[he cooling S'ystem^ mdudlog the radlalor pressure
cap and upper radiator hose, is no longer hoi.
Turn the pressure cap slowly counterclockwise

aiboul one lull turn,

It /ou hear a hiss, wait lor that to stop.

A hiss means there is stiN some pressure left

2-

Ttien keep turning the prgssura cap. Remove the

pressure cap.

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