Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE
Section 972 (Engine Cooling System)
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- DTC P0480 or P0481
- 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 MIL/DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC P1258
- Symptoms - Engine Cooling
- Low Engine Coolant Indicator Always On
- Cooling Fan Always On
- Cooling Fan Inoperative
- Engine Overheating
- Loss of Coolant
- Thermostat Diagnosis
- Coolant Heater Inoperative (Gasoline)
- Engine Fails To Reach Normal Operating Temperature
- Pressure Cap Testing
- Coolant Leak Testing
- Fan Clutch Diagnosis
- Repair Instructions
- Cooling System Draining and Filling
- Flushing
- Radiator Cleaning
- Radiator Surge Tank Replacement (Non-HP2)
- Radiator Surge Tank Inlet Hose/Pipe Replacement (Non-HP2)
- Radiator Inlet Hose Replacement (Non-HP2)
- Radiator Outlet Hose Replacement (Non-HP2)
- Radiator Hose Quick Connect Fitting
- Radiator Vent Inlet Hose Replacement (Non-HP2)
- Engine Oil Cooler Pipe/Hose Quick Connect Fitting
- Engine Oil Cooler Hose/Pipe Replacement
- Fan Replacement (Diesel)
- Fan Replacement (Mechanical)
- Fan Clutch Replacement (Diesel)
- Cooling Fan Pulley Replacement
- Engine Cooling Fan Replacement (Non-HP2)
- Engine Coolant Fan Motor Replacement (Non-HP2)
- Cooling Fan and Shroud Replacement (Non-HP2)
- Turbocharger Coolant Bypass Valve Replacement
- Turbocharger Coolant Hoses/Pipes Replacement (LMM - Inlet Pipe)
- Turbocharger Coolant Hoses/Pipes Replacement (LMM - Outlet Pipe)
- Exhaust Gas Recirculation Cooling Pipe Replacement - Lower (LMM)
- Exhaust Gas Recirculation Cooling Pipe Replacement - Upper (LMM)
- Water Outlet Tube Replacement (LMM)
- Water Outlet Tube Replacement (LU3)
- Engine Coolant Thermostat Housing Replacement (LY2, LH6, LY5, LMG, LY6)
- Engine Coolant Thermostat Replacement
- Engine Coolant Thermostat Replacement (LMM)
- Thermostat Housing Crossover Replacement (LMM)
- Thermostat Bypass Pipe Replacement Diesel
- Coolant Air Bleed Pipe Assembly Replacement (LH6, LY5, LMG, L76, L92)
- Coolant Air Bleed Pipe Assembly Replacement (LY2, LY6)
- Water Pump Replacement (LU3)
- Water Pump Replacement (LY6, L76 and L92)
- Water Pump Replacement (LH6, LY2, LY5, and LMG)
- Water Pump Replacement (LMM)
- Engine Coolant Fan Upper Shroud Replacement (Mechanical)
- Engine Coolant Fan Upper Shroud Replacement (Automatic Transmission - Diesel)
- Engine Coolant Fan Lower Shroud Replacement (Mechanical)
- Radiator Replacement (4.3, 4.8, 5.3, and 6.0L)
- Radiator Replacement (LLM)
- Radiator Air Upper Baffle and Deflector Replacement
- Coolant Heater Replacement (LH6, LY2, LMG, LY5, and LY6)
- Coolant Heater Replacement (L76, L92)
- Coolant Heater Cord Replacement (L76 and L92)
- Coolant Heater Cord Replacement (LH6, LMG, LY2 and LY5)
- Coolant Heater Cord Replacement (LY6)
- Description and Operation
- Cooling Fan Description and Operation (w/o LFA)
- Cooling System Description and Operation
- Engine Coolant Indicators
- Cooling Fan Control - Two Fan System
- Coolant Level Control (If Equipped)
- Coolant Heater
- Auxiliary Coolant Pump (w/HP2)
- Cooling System
- Notes
- Cooling Cycle
- Coolant
- Radiator
- Surge Tank
- Pressure Cap
- Cooling Fan and Clutch
- Air Baffles and Seals
- Water Pump
- Water Pump (6.6L Diesel Engine)
- Thermostat
- Thermostats (6.6L Diesel Engine)
- Engine Oil Cooler
- Engine Oil Cooler (6.6L Diesel Engine)
- Transmission Oil Cooler
- Turbocharger Bypass Valve (6.6L Diesel Engine)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.