LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Chevrolet
>>
2003
>>
Impala LS
>>
Repair and Diagnosis
>>
Engine Mechanical
>>
Electric Cooling Fan System
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Electric Cooling Fan System
Expand All (for easy ctrl-f)
Collapse All
Model Identification
Description & Operation
Cooling Fan Control
3.4L Engine
3.8L Engine
Component Locations
Programming
Notes
Powertrain Control Module
Trouble Shooting
Preliminary Inspection
Self-Diagnostic System
Retrieving Diagnostic Trouble Codes
Clearing Diagnostic Trouble Codes
Diagnostic System Check (Engine Cooling)
Symptoms (Engine Cooling)
Notes
Visual/Physical Inspection
Intermittent
Checking Aftermarket Accessories
Diagnostic Trouble Code Definitions
Diagnostic Tests
DTC P0480 Or P0481: Cooling Fan Relay Control Circuit Improper Voltage Level
Circuit Description
Conditions For Running DTC
Conditions For Setting DTC
Action Taken When DTC Sets
Conditions For Clearing MIL/DTC
Diagnostic Aids
Testing
System Tests
Notes
Test A: Cooling Fan Always On
Test B: Cooling Fan Inoperative
Removal & Installation
Notes
Fan Shroud
Notes
Removal
Installation
Torque Specifications
Connector Identification
Wiring Diagrams