2009 Chevrolet Silverado 1500 Crew Cab Owner's Manual - Page 54

2009 Chevrolet Silverado 1500 Crew Cab Manual

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5. Add the pre-mixed DEX-COOL™, available at your dealer/retailer, until the coolant level is maintained at the FULL COLD mark. This should take no longer than two minutes of hybrid cooling pump operation. If the level cannot be kept at the FULL COLD level, your vehicle may need service. See your dealer/retailer. 6. Then replace the DMCM coolant surge tank pressure cap. Be sure the pressure cap is hand-tight and fully seated. 2. Then keep turning the DMCM coolant surge tank pressure cap slowly, and remove it. 3. Add the pre-mixed DEX-COOL™, available at your dealer/retailer, to the DMCM coolant surge tank until the level reaches the FULL COLD mark. 4. Turn the ignition to ON/RUN without starting the engine. The hybrid cooling pumps will run and any trapped air will purge to the surge tank. Notice: Using tap water, cooling system sealers or conditioners in an attempt to stop coolant leaks can damage the DMCM and engine cooling systems. Never use tap water, cooling system sealers or conditioners in your cooling system. 5-10

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2. Then keep turning the DMCM coolant surge tank
pressure cap slowly, and remove it.
3. Add the pre-mixed DEX-COOL™, available at your
dealer/retailer, to the DMCM coolant surge tank
until the level reaches the FULL COLD mark.
4. Turn the ignition to ON/RUN without starting the
engine. The hybrid cooling pumps will run and
any trapped air will purge to the surge tank.
5. Add the pre-mixed DEX-COOL™, available at your
dealer/retailer, until the coolant level is maintained at
the FULL COLD mark. This should take no longer
than two minutes of hybrid cooling pump operation.
If the level cannot be kept at the FULL COLD
level, your vehicle may need service. See your
dealer/retailer.
6. Then replace the
DMCM coolant surge
tank pressure cap.
Be sure the pressure
cap is hand-tight
and fully seated.
Notice:
Using tap water, cooling system sealers or
conditioners in an attempt to stop coolant leaks
can damage the DMCM and engine cooling systems.
Never use tap water, cooling system sealers or
conditioners in your cooling system.
5-10