REFILLING COOLING SYSTEM
3.7L
CAUTION: Failure to purge air from the cooling system can result in an overheating condition and severe engine damage.
(Refer to LUBRICATION & MAINTENANCE/FLUID TYPES - DESCRIPTION)
NOTE: The engine cooling system will push any remaining air into the coolant bottle within about an hour of normal driving. As a result, a drop in coolant level in the pressure bottle may occur. If the engine cooling system overheats and pushes coolant into the overflow side of the coolant bottle, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT ON THE BOTTLE. Removing the pressure cap breaks the vacuum path between the two bottle sections and the coolant will not return to cooling system.
Only add coolant to the pressure bottle when the engine is cold. Coolant level in a warm engine will be higher due to thermal expansion.
4.7L
CAUTION: Failure to purge air from the cooling system can result in an overheating condition and severe engine damage.
(Refer to LUBRICATION & MAINTENANCE/FLUID TYPES - DESCRIPTION)
Only add coolant to the reserve/overflow tank when the engine is cold. Coolant level in a warm engine will be higher due to thermal expansion.
5.7L
Hand tighten only.
WARNING: When installing drain hose to air bleed valve, route hose away from accessory drive belts, accessory drive pulleys, and electric cooling fan motors.
NOTE: It may be necessary to install a bleed fitting on the 5.7L engine.
- Plug Location (5.7L): Located on the front of the water outlet housing at the front of engine.
NOTE: It is imperative that the cooling system air bleed valve be opened before any coolant is added to the cooling system. Failure to open the bleed valve first will result in an incomplete fill of the system.
(Refer to LUBRICATION & MAINTENANCE/FLUID TYPES - DESCRIPTION)
NOTE: The engine cooling system will push any remaining air into the coolant bottle within about an hour of normal driving. As a result, a drop in coolant level in the pressure bottle may occur. If the engine cooling system overheats and pushes coolant into the overflow side of the coolant bottle, this coolant will be sucked back into the cooling system ONLY IF THE PRESSURE CAP IS LEFT ON THE BOTTLE. Removing the pressure cap breaks the vacuum path between the two bottle sections and the coolant will not return to cooling system.