Chevrolet 4500 HD 2023 Manual page 254

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Using the vehicle when there are leaks can
lead to engine seizure.
Adding Engine Coolant
Single Cab Model
Crew Cab Model
When the engine coolant level in the engine
coolant reserve tank is below the MIN line,
open the reserve tank cap and fill to near
the MAX line with engine coolant. Wash
the reserve tank cap and filler neck with
clean water. Tighten the cap securely after
the engine coolant has been replenished.
Vehicle Care
1. When the engine is cool, remove the
radiator cap (1).
Turn the cap slowly to the left until
it reaches a stop . Do not press
down while turning the cap.
Wait until any remaining pressure
(indicated by a hissing sound) is
relieved, then press down on the cap
and continue turning it to the left.
2. Fill the radiator to the base of the filler
neck (2) and install the radiator cap. Add
enough engine coolant to provide for
required cooling, freezing, and corrosion
protection.
253

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4500 xd 20235500 hd 20235500 xd 2023

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