Cooling System

• Description and operation
1. Cooling system. Coolant reserve/overflow system
2. Thermostat-5.2L/5.9L engines. Thermostat-4.7L engine
3. Radiator pressure cap. Radiator
4. Water pump. Water pump bypass-4.7L
5. Water pump bypass hose-5.2L/5.9L engines. Automatic transmission oil coolers
6. Automatic belt tensioner. Block heater
7. Hose clamps. Viscous fan drive
• Diagnosis and testing
1. On-board diagnostics (obd). Preliminary checks
2. Electric cooling fan. Radiator coolant flow check
3. Cooling system-testing for leaks
4. Viscous fan drive. Accessory drive belt diagnosis
5. Thermostat-gas engines. Radiator cap-to-filler neck seal-pressure relief check
6. Radiator cap-pressure testing. Coolant-low level aeration
7. Cooling system-deaeration
• Service procedures
1. Coolant-routine level check. Coolant
2. Coolant selection and additives. Coolant-adding additional
3. Coolant level check. Cooling system-draining and filling
4. Cooling system-cleaning/reverse flushing
• Removal and installation
1. Water pump-5.2L/5.9L engines
2. Water pump 4.7L engines
3. Water pump bypass hose-5.2L/5.9L engines
4. Thermostat-5.2L/5.9L engine
5. Thermostat- 4.7L engine. Radiator
6. Block heater. Accessory drive belt-5.2L/5.9L engine
7. Accessory belt replacement-4.7L engine. Automatic belt tensioner-5.2L/5.9L engine
8. Automatic belt tensioner-4.7L engine. Radiator draincock
9. Viscous fan drive
• Cleaning and inspection