Section 488 (Engine Cooling System)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Engine Cooling
- Diagnostic System Check - Engine Cooling
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC P1258: Engine Coolant Overtemperature - Protection Mode Active
- Symptoms - Engine Cooling
- Engine Overheated Indicator Always On
- Engine Coolant Temperature Indicator Always On
- Low Engine Coolant Indicator Always On
- Engine Overheating
- Loss of Coolant
- Thermostat Diagnosis
- Coolant Heater Inoperative
- Engine Fails To Reach Normal Operating Temperature
- Pressure Cap Testing
- Coolant Leak Testing
- Fan Clutch Diagnosis
- Repair Instructions
- Draining and Filling Cooling System
- Flushing
- Radiator Cleaning
- Surge Tank Replacement
- Surge Tank Hose/Pipe Replacement - Inlet
- Surge Tank Hose/Pipe Replacement - Outlet (4.8L, 5.3L, and 6.0L Engines)
- Radiator Hose Quick Connect Fitting
- Radiator Hose Replacement - Inlet (4.8L, 5.3L, and 6.0L Engines)
- Radiator Hose Replacement - Inlet (8.1L Engine)
- Radiator Hose Replacement - Outlet (4.8L, 5.3L, and 6.0L Engines)
- Radiator Hose Replacement - Outlet (Utility 8.1L Engine)
- Radiator Hose Replacement - Outlet (Avalanche/XLT 8.1L)
- Radiator Vent Inlet Hose Replacement
- Engine Oil Cooler Pipe/Hose Quick Connect Fitting
- Engine Oil Cooler Hose/Pipe Replacement (2WD)
- Engine Oil Cooler Hose/Pipe Replacement (4WD)
- Fan Replacement
- Fan Clutch Replacement
- Thermostat Housing Replacement (4.8L, 5.3L, and 6.0L Engines)
- Thermostat Replacement (8.1L Engine)
- Coolant Crossover Pipe Replacement (8.1L Engine)
- Coolant Air Bleed Pipe Assembly Replacement (4.8L, 5.3L, and 6.0L Engines)
- Coolant Air Bleed Hose Replacement (4.8L, 5.3L, and 6.0L Engines)
- Water Pump Replacement (4.8L, 5.3L, and 6.0L Engines)
- Water Pump Replacement (8.1L Engine)
- Drain Cock Replacement
- Fan Shroud Replacement - Upper (W/O M74)
- Fan Shroud Replacement - Upper (W/M74)
- Fan Shroud Replacement - Lower
- Radiator Replacement (EXC 8.1L)
- Radiator Replacement (8.1L)
- Radiator Air Baffle and Deflector Replacement - Side
- Radiator Air Baffle and Deflector Replacement - Upper
- Coolant Heater Replacement (Dealer Installation - 6.0L Engine)
- Coolant Heater Replacement (4.8L, 5.3L, and 6.0L Engines)
- Coolant Heater Replacement (8.1L Engine)
- Coolant Heater Cord Replacement
- Description and Operation
- Special Tools and Equipment