Engine Cooling System

• Specifications
  • Temperature Versus Resistance
  • Fastener Specifications
  • Approximate Fluid Capacities
  • Adhesives, Fluids, Lubricants, and Sealers
• Schematic Wiring Diagrams
  • Engine Heating/Cooling Wiring Schematics
    • Engine Cooling Fans (LCV/LGZ)
    • Engine Cooling Fans (LWN)
• Diagnostic Information and Procedures
  • DTC P00B3 or P00B4 (LCV or LGZ)
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Typical Scan Tool Data
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC P00B7
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Typical Scan Tool Data
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC P0480, P0691, or P0692 (LWN)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC P0480, P0691, or P0692 (Gas Engine)
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC P0483
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC P0495
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC P0526
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC P0597-P0599 (LCV)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTCs
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC P112F (LCV or LGZ)
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Typical Scan Tool Data
    • Circuit Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • DTC P1258
    • Diagnostic Instructions
    • DTC Descriptors
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the MIL/DTC
    • Reference Information
    • Circuit/System Verification
    • Repair Instructions
  • Symptoms - Engine Cooling
    • Important Preliminary Inspections Before Starting
    • Visual/Physical Inspection
    • Identifying Intermittent Conditions
    • Symptom List
  • Cooling Fan Always On
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Cooling Fan Inoperative
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Engine Overheating
  • Loss of Coolant
  • Coolant Heater Inoperative (Without Diesel)
    • Diagnostic Instructions
    • Circuit/System Description
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • Coolant Heater Inoperative (With Diesel)
    • Diagnostic Instructions
    • Circuit/System Description
    • Reference Information
    • Circuit/System Testing
    • Repair Instructions
  • Engine Fails To Reach Normal Operating Temperature
  • Pressure Cap Testing
    • Notes
    • Pressure Cap Testing
  • Cooling System Leak Testing
  • Thermostat Diagnosis
    • Notes
    • Thermostat Test Procedure Using Tempil Sticks
    • Thermostat Test Procedure Using Glycol
• Repair Instructions
  • Hose Clamp Replacement Guidelines - Spring Type
    • Notes
    • Spring Type Hose Clamp Replacement Guidelines
    • Removing The Spring Type Hose Clamp
    • If The Spring Type Hose Clamp Is Being Reused
    • If The Spring Type Hose Clamp Is Being Replaced
  • Cooling System Draining and Filling (Static Fill)
    • Notes
    • Draining Procedure
    • Filling Procedure
  • Cooling System Draining and Filling (Vac n Fill)
    • Notes
    • Draining Procedure
    • Vac-N-Fill Procedure
  • Flushing
  • Radiator Cleaning
  • Radiator Surge Tank Replacement
  • Radiator Surge Tank Outlet Pipe Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Radiator Surge Tank Inlet Hose Replacement
  • Radiator Surge Tank Outlet Hose Replacement (LCV T Connection to Surge Tank)
  • Radiator Surge Tank Outlet Hose Tee Replacement (LWN)
  • Radiator Inlet Pipe Replacement (LCV)
    • Removal Procedure
    • Installation Procedure
  • Radiator Inlet Hose Replacement (LCV Radiator to Inlet Pipe)
  • Radiator Inlet Hose Replacement (LCV Inlet Pipe to Water Outlet)
  • Radiator Inlet Hose Replacement (LWN Radiator Side)
  • Radiator Inlet Hose Replacement (LWN Engine Side)
    • Removal Procedure
    • Installation Procedure
  • Radiator Inlet Hose Replacement (LGZ)
  • Radiator Inlet Hose Connector Replacement (LWN)
  • Radiator Outlet Hose Replacement (LCV)
    • Removal Procedure
    • Installation Procedure
  • Radiator Outlet Hose Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Radiator Outlet Hose Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Radiator Upper Bracket Replacement
  • Radiator Side Mount Bracket Replacement - Left Side
  • Radiator Side Mount Bracket Replacement - Right Side
  • Radiator Vent Outlet Hose Replacement (LCV LGZ)
  • Engine Oil Cooler Replacement (LWN)
  • Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement (Outlet, LGZ)
  • Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement (Inlet, LGZ)
  • Engine Oil Cooler Outlet Hose Replacement (LWN)
  • Engine Oil Cooler Inlet Hose Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Pipe Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Inlet Pipe Replacement (LGZ, 2WD)
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Inlet Pipe Replacement (LGZ, 4WD)
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Outlet Pipe Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Fan Blade Replacement (LCV, LGZ)
  • Fan Blade Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Fan Blade Clutch Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Turbocharger Coolant Feed Pipe Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Turbocharger Coolant Return Pipe Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Exhaust Gas Recirculation Manifold Cooling Feed Hose Replacement (LWN)
  • Exhaust Gas Recirculation Manifold Cooling Return Hose Replacement (LWN)
  • Thermostat Bypass Hose Replacement (LCV)
  • Water Pump Inlet Pipe Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Water Pump Inlet Pipe Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Thermostat Housing Replacement (LCV)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Thermostat Housing Replacement (LGZ)
  • Engine Coolant Thermostat Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Air Bleed Pipe Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Air Bleed Hose Replacement
  • Coolant Recovery Reservoir Hose Replacement (LCV)
  • Coolant Recovery Reservoir Hose Replacement (LGZ)
  • Water Outlet Replacement (LCV)
    • Removal Procedure
    • Installation Procedure
  • Water Outlet Replacement (LGZ)
  • Thermostat Bypass Pipe Replacement (LCV)
  • Heater Inlet And Outlet Pipe Replacement (LGZ)
  • Water Pump Pulley Replacement (LGZ)
  • Water Pump Replacement (LCV)
    • Notes
    • Removal Procedure
    • Installation Procedure
  • Water Pump Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Water Pump Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Temperature Sensor Replacement - Radiator (LCV)
  • Radiator Drain Cock Replacement (LCV, LWN, LGZ)
  • Engine Coolant Fan Shroud Replacement (LCV, LGZ)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Fan Shroud Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Engine Coolant Fan Lower Shroud Replacement (LWN)
  • Engine Coolant Fan Rear Shroud Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Condenser, Fan, and Radiator Assembly Removal and Installation (LWN)
    • Removal Procedure
    • Installation Procedure
  • Radiator Replacement (LCV)
    • Removal Procedure
    • Installation Procedure
  • Radiator Replacement (LWN)
    • Removal Procedure
    • Installation Procedure
  • Radiator Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
  • Radiator Lower Insulator Replacement
  • Radiator Air Lower Baffle Replacement (LCV, LGZ)
  • Radiator Air Lower Baffle Replacement (LWN)
  • Radiator Air Side Baffle Replacement - Left Side (LCV, LGZ)
  • Radiator Air Side Baffle Replacement - Left Side (LWN)
  • Radiator Air Side Baffle Replacement - Right Side (LCV, LGZ)
  • Radiator Air Side Baffle Replacement - Right Side (LWN)
  • Coolant Heater Replacement (LCV)
  • Coolant Heater Replacement (LWN)
  • Coolant Heater Replacement (LGZ)
  • Coolant Heater Cord Replacement (LCV)
  • Coolant Heater Cord Replacement (LWN)
  • Coolant Heater Cord Replacement (LGZ)
    • Removal Procedure
    • Installation Procedure
• Description and Operation
  • Cooling Fan Description and Operation
    • Cooling Fan Control
    • Cooling System Electronic Component Description and Operation
  • Cooling System Description and Operation (LGZ, LWN)
    • Cooling System
  • Cooling System Description and Operation (LCV)
    • Cooling System
• Special Tools and Equipment
  • Special Tools