Section 943 (Engine Cooling System)
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring 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 B0159: Outside Air Temperature Sensor Circuit Range/Performance
- DTC B3844: Engine Coolant Circulation Pump Circuit
- DTC P1258: Engine Coolant Overtemperature - Protection Mode Active
- DTC P0A01, P0A02, P0A03, P1A7A, P1A75, P1A76, P1A77, P1A78, or P1A79: Energy Storage Control Module (ESCM) Internal Malfunction
- DTC P1AC0: Starter/Generator Control Module Output Circuit
- DTC P0A06 or P0A07: Energy Storage Control Module (ESCM) Internal Malfunction
- DTC P1AC1 or P1AC2: Starter/Generator Control Module (SGCM) Coolant
- DTC P0A3E: SGCM Calculated Temperature High
- DTC P1A7E: Starter/Generator Control Module Overtemperature - High Voltage System Disabled
- DTC P1A7F, P1A80, P1A81, P1A82, P1A83, P1A84, P1A85, or P1A86: Internal Fluid Level Sensor High Voltage
- DTC P1A87: Low Starter/Generator Control Module Coolant Level
- 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
- Loss of Coolant - Starter/Generator Control Module
- Thermostat Diagnosis
- Coolant Heater Inoperative
- Engine Fails To Reach Normal Operating Temperature
- Pressure Cap Testing
- Pressure Cap Testing - Starter/Generator Control Module
- Coolant Leak Testing
- Coolant Leak Testing - Starter/Generator Control Module
- Starter Generator Control Module Coolant Pump Inoperative
- Starter Generator Control Module Cooling Fan Always On
- Starter Generator Control Module Cooling Fan Inoperative
- Fan Clutch Diagnosis
- Repair Instructions
- Draining and Filling Cooling System (with HP2)
- Draining and Filling Cooling System (without HP2)
- Draining and Filling Cooling System - Starter/Generator Control Module
- Flushing
- Flushing - Starter/Generator Control Module
- Radiator Cleaning
- Cooling Fan - Starter/Generator Control Module Replacement
- Coolant Tank - Starter/Generator Control Module Replacement
- Coolant Tank Hose - Starter/Generator Control Module Replacement
- Coolant Pump - Starter/Generator Control Module Replacement
- Coolant Pump Inlet Hose - Starter/Generator Module Replacement
- Coolant Pump Outlet Hose - Starter/Generator Module Replacement
- Coolant Pipe Quick Connect Fitting - Starter/Generator Control Module
- Radiator - Starter/Generator Control Module Replacement
- Radiator Hose Outlet - Starter/Generator Control Module Replacement
- Cooler Pipe Inlet - Starter/Generator Stator Replacement
- Surge Tank Replacement
- Surge Tank Hose/Pipe Replacement - Inlet
- Radiator Hose Quick Connect Fitting
- Radiator Hose Replacement - Inlet (4.3L Engine)
- Radiator Hose Replacement - Inlet (4.8, 5.3, and 6.0L Engines)
- Radiator Hose Replacement - Inlet (6.6L)
- Radiator Hose Replacement - Inlet (8.1L)
- Radiator Hose Replacement - Outlet (4.3L Engine)
- Radiator Hose Replacement - Outlet (4.8, 5.3, and 6.0L Engines)
- Radiator Hose Replacement - Outlet (6.6L)
- Radiator Hose Replacement - Outlet (8.1L)
- Radiator Hose Replacement - Outlet (W/HP2)
- 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
- Cooling Fan Pulley Replacement (6.6L (LB7) Engine)
- Cooling Fan Pulley Replacement (6.6L (LLY) Engine)
- Turbocharger Coolant Bypass Valve Replacement (6.6L (LB7) Engine)
- Turbocharger Coolant Bypass Valve Replacement (6.6L (LLY) Engine)
- Turbocharger Coolant Hoses/Pipes Replacement (6.6L (LB7) Engine)
- Turbocharger Coolant Hoses/Pipes Replacement (6.6L (LLY) Engine - Inlet Pipe)
- Turbocharger Coolant Hoses/Pipes Replacement (6.6L (LLY) Engine - Outlet Pipe)
- Exhaust Gas Recirculation (EGR) Coolant Hoses/Pipes Replacement (6.6L (LLY) Engine)
- Thermal Bypass Fitting Replacement (5.3L Engine w/RPO HP2)
- Thermal Bypass Hose Replacement (5.3L Engine w/RPO HP2)
- Water Outlet Tube Replacement (6.6L (LB7) Engine)
- Water Outlet Tube Replacement (6.6L (LLY) Engine)
- Thermostat Housing Replacement (4.8L, 5.3L, and 6.0L Engines)
- Thermostat Replacement (4.3L Engine)
- Thermostat Replacement (6.6L (LB7) Engine)
- Thermostat Replacement (6.6L (LLY) Engine)
- Thermostat Replacement (8.1L Engine)
- Thermostat Housing Crossover Replacement (6.6L (LB7) Engine)
- Thermostat Housing Crossover Replacement (6.6L (LLY) Engine)
- Coolant Crossover Pipe Replacement (8.1L)
- Coolant Air Bleed Pipe Assembly Replacement (4.8L, 5.3L, and 6.0L)
- Coolant Air Bleed Hose Replacement (4.8L, 5.3L, and 6.0L)
- Thermostat Bypass Pipes Replacement (6.6L (LB7) Engine)
- Thermostat Bypass Pipes Replacement (6.6L (LLY))
- Water Pump Replacement (4.3L Engine)
- Water Pump Replacement (4.8L, 5.3L, and 6.0L Engines)
- Water Pump Replacement (6.6L (LB7) Engine)
- Water Pump Replacement (6.6L (LLY))
- Water Pump Replacement (8.1L)
- Water Pump Outlet Pipe Replacement (6.6L (LB7) Engine)
- Water Pump Outlet Pipe Replacement (6.6L (LLY))
- Water Pump Replacement - Auxiliary
- Drain Cock Replacement
- Fan Shroud Replacement - Upper (W/O M74)
- Fan Shroud Replacement - Upper (W/M74)
- Fan Shroud Replacement - Upper (W/HP2)
- 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 (4.3L)
- Coolant Heater Replacement (4.8L, 5.3L, and 6.0L)
- Coolant Heater Replacement (6.6L Engine)
- Coolant Heater Replacement (8.1L)
- Coolant Heater Cord Replacement
- Description and Operation
- Cooling System Description and Operation
- Engine Coolant Indicators
- Cooling Fan Control - Two Fan System
- Coolant Level Control (If Equipped)
- Coolant Heater
- Cooling System
- Starter Generator Control Module Cooling System Description and Operation
- Cooling System Description and Operation
- Special Tools and Equipment