Engine Cooling System

• Specifications
  • Fastener Tightening Specifications
• Schematic Wiring Diagrams
  • Engine Heating/Cooling Wiring Schematics
    • Cooling Fans
    • Charge Air Cooling Coolant Pump (LSA)
• Diagnostic Information and Procedures
  • DTC P0480, P0481, P0691, P0692, P0693, or P0694: Cooling Fan Relays
    • 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
    • Component Testing
    • Repair Instructions
  • DTC P1258: Engine Coolant Overtemperature
    • 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
    • Component Testing
    • Repair Instructions
  • Cooling Fan Inoperative
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
    • Repair Instructions
  • Engine Overheating
  • Loss of Coolant (LFX, L99/LS3, LS7)
  • Loss of Coolant (LSA)
  • Thermostat Diagnosis
    • Notes
    • Thermostat Test Procedure Using Tempil Sticks
    • Thermostat Test Procedure Using Glycol
  • Coolant Heater Inoperative
    • 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
  • Coolant Leak Testing
    • Notes
    • Coolant Leak Testing
  • Charge Air Coolant Leak Testing (LSA)
    • Notes
    • Coolant Leak Testing
• Repair Instructions
  • Cooling System Draining and Filling
    • Cooling System Draining and Filling (LSA, LS3, LS7, L99 Static Fill)
      • Notes
      • Draining Procedure
      • Filling Procedure
    • Cooling System Draining and Filling (GE 47716)
      • Notes
      • Draining Procedure
      • Vac-N-Fill Procedure
    • Cooling System Draining and Filling (LFX, Static Fill)
      • Notes
      • Draining Procedure
      • Filling Procedure
  • Charge Air Cooling System Coolant Level Inspection (LSA)
  • Charge Air Cooling System Draining and Filling (LSA Vacuum Fill)
    • Notes
    • Draining Procedure
    • Vac-N-Fill Procedure
  • Charge Air Cooling System Draining and Filling (LSA Static)
    • Draining Procedure
    • Filling Procedure
  • Flushing
  • Charge Air Cooling System Flushing (LSA)
  • Charge Air Cooling System Cleaning (LSA)
  • Radiator Cleaning
  • Coolant Recovery Reservoir Replacement
    • Coolant Recovery Reservoir Replacement (LS7)
    • Coolant Recovery Reservoir Replacement (Except LSA)
  • Charge Air Cooler Coolant Hose Replacement (LSA)
  • Charge Air Cooler Coolant Hose Replacement - Pipe to Pump (LSA)
  • Charge Air Cooler Coolant Hose Replacement - Radiator to Pipe (Lower LSA)
  • Charge Air Cooler Coolant Hose Replacement - Radiator to Pipe (Upper LSA)
  • Radiator Inlet Hose Replacement (LS7)
  • Radiator Inlet Hose Replacement (LFX)
  • Radiator Inlet Hose Replacement (LSA)
  • Radiator Inlet Hose Replacement (LS3, L99)
    • Notes
    • Removal Procedure
    • Installation Procedure
  • Auxiliary Radiator Inlet Hose Replacement (LS7)
    • Removal Procedure
    • Installation Procedure
  • Radiator Outlet Hose Replacement (LFX)
  • Radiator Outlet Hose Replacement (LS3, L99)
    • Notes
    • Removal Procedure
    • Installation Procedure
  • Radiator Outlet Hose Replacement (LS7)
  • Radiator Outlet Hose Replacement (LSA)
  • Auxiliary Radiator Outlet Hose Replacement (LS7)
    • Removal Procedure
    • Installation Procedure
  • Auxiliary Radiator Outlet Pipe Replacement (LS7)
  • Radiator Outlet Pipe Replacement (LFX)
  • Radiator Upper Bracket Replacement (LSA, LS7)
  • Radiator Vent Inlet Hose Replacement (LS7)
  • Radiator Overflow Hose Replacement
  • Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement (LSA)
  • Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement (LS7)
  • Engine Oil Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection
    • Notes
    • Removal Procedure
    • Installation Procedure
  • Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection
    • Notes
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Inlet Hose Replacement (LS3, L99. LSA)
  • Engine Oil Cooler Coolant Outlet Hose Replacement (LS7)
    • Removal Procedure
    • Installation Procedure
  • Engine Oil Cooler Pipe Replacement (LS3, L99)
  • Engine Oil Cooler Pipe Replacement (LSA)
  • Engine Oil Cooler Inlet Pipe Replacement (LS7)
  • Fan Blade Replacement (LS7 - Rear)
  • Engine Coolant Fan Replacement
  • Engine Coolant Fan Motor Replacement
    • Engine Coolant Fan Motor Replacement (LS7 - Rear)
    • Engine Coolant Fan Motor Replacement
    • Engine Coolant Fan Motor Replacement (LS7 - Front)
  • Engine Coolant Thermostat Lower Housing Replacement (LFX)
  • Engine Coolant Thermostat Replacement
    • Engine Coolant Thermostat Replacement (LFX)
    • Engine Coolant Thermostat Replacement (LSA)
    • Engine Coolant Thermostat Replacement (LS7)
    • Engine Coolant Thermostat Replacement (L99/LS3)
      • Removal Procedure
      • Installation Procedure
  • Engine Coolant Air Bleed Pipe Replacement - Left Side (LSA)
  • Engine Coolant Air Bleed Pipe Replacement - Right Side (LSA)
  • Engine Coolant Air Bleed Pipe Replacement (LS7)
  • Engine Coolant Air Bleed Pipe Replacement (LS3, L99)
  • Engine Coolant Air Bleed Hose Replacement (LSA)
  • Engine Coolant Air Bleed Hose Replacement (LS7)
  • Engine Coolant Air Bleed Hose Replacement (LS3, L99)
  • Engine Coolant Air Bleed Hose Replacement (LFX)
  • Coolant Recovery Reservoir Pipe Replacement (LS7)
  • Water Outlet Replacement (LFX)
    • Removal Procedure
    • Installation Procedure
  • Heater Inlet And Outlet Pipe Replacement (LFX)
  • Water Pump Replacement
    • Water Pump Replacement (LS7, LS3/L99)
      • Removal Procedure
      • Installation Procedure
    • Water Pump Replacement (LSA)
      • Removal Procedure
      • Installation Procedure
    • Water Pump Replacement (LFX)
      • Notes
      • Removal Procedure
      • Installation Procedure
  • Charge Air Cooler Coolant Pump Replacement (LSA)
  • Radiator Drain Cock Replacement (LSA, LS7)
  • Radiator Drain Cock Replacement (LS3, L99, FLX)
  • Charge Air Cooler Radiator Drain Plug Replacement (LSA)
  • Engine Coolant Fan Shroud Replacement
    • Engine Coolant Fan Shroud Replacement (LS7 Front with C67)
    • Engine Coolant Fan Shroud Replacement (LFX)
    • Engine Coolant Fan Shroud Replacement (LSA)
    • Engine Coolant Fan Shroud Replacement (LS7 Rear)
    • Engine Coolant Fan Shroud Replacement (LS3, L99)
    • Engine Coolant Fan Shroud Replacement (LS7 Front with C42)
  • Radiator Replacement
    • Radiator Replacement (LS7 with C42)
      • Removal Procedure
      • Installation Procedure
    • Radiator Replacement (LS3, L99)
      • Removal Procedure
      • Installation Procedure
    • Radiator Replacement (LS7 with C67)
      • Removal Procedure
      • Installation Procedure
    • Radiator Replacement (LFX, LSA)
      • Removal Procedure
      • Installation Procedure
  • Auxiliary Radiator Replacement (LS7)
  • Charge Air Cooler Radiator Replacement (LSA)
  • Radiator Air Lower Baffle Replacement (LS7)
  • Radiator Air Side Baffle and Deflector Replacement (Left)
  • Radiator Air Side Baffle and Deflector Replacement (Right)
  • Radiator Air Side Baffle and Deflector Replacement (LSA, LS7 Left)
  • Radiator Air Side Baffle and Deflector Replacement (LS7 with C42 - Radiator)
  • Radiator Air Side Baffle and Deflector Replacement (LSA, LS7 Right)
  • Radiator Air Side Baffle and Deflector Replacement (LS7 with C67 - Radiator)
  • Radiator Air Lower Seal Replacement (LS7)
  • Radiator Air Inlet Duct Replacement
  • Radiator Air Inlet Duct Replacement (LSA)
  • Engine Coolant Heater Replacement (LFX)
  • Engine Coolant Heater Cord Replacement (LFX)
• Description and Operation
  • Cooling Fan Description and Operation
  • Cooling System Description and Operation
    • Cooling Fan Control - Variable Speed Single Fan System
    • Cooling System
• Special Tools and Equipment
  • Special Tools