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Chevy Express H1500, Van Cargo, 5.3 T
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Immobilizer System
Immobilizer System
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Schematic and Routing Diagrams
Immobilizer Schematics
Component Locator
Immobilizer Component Views
Immobilizer Connectors
Passlock Sensor
Diagnostic Information and Procedures
Diagnostic Code Index
Scan Tool Data List
Scan Tool Data Definitions
Diagnostic Starting Point - Immobilizer
DTC B2947
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC B2948
Circuit Description
DTC Descriptor
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC B2957
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC B2958
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC B2960
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC B3031
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Diagnostic Aids
Test Description
DTC B3033
Circuit Description
DTC Descriptor
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the DTC
Diagnostic Aids
Test Description
DTC P1626
Circuit Description
DTC Descriptor
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Diagnostic Aids
Test Description
DTC P1631
Circuit Description
DTC Descriptor
Conditions for Running the DTC
Conditions for Setting the DTC
Action Taken When the DTC Sets
Conditions for Clearing the MIL/DTC
Diagnostic Aids
Test Description
Symptoms - Immobilizer
Important Preliminary Checks Before Starting
Visual/Physical Inspection
Intermittent
Symptom List
Security Indicator Always On or Flashing
Security Indicator Inoperative
Repair Instructions
Programming Immobilizer System Components
Programming Replacement Passlock™ Sensor, BCM, or PCM
Conditions
Learn Procedures
10-Minute Learn Procedure
30-Minute Learn Procedure
Adding Keys
Replacing Keys
Description and Operation
Immobilizer Description and Operation
Passlock™ System
Ignition Lock Cylinder and Housing
Ignition Switch
Passlock™ Sensor
Body Control Module
SECURITY Telltale
Vehicle/Powertrain Control Module
Fuel Lockout Cycle
Changing the Passlock™ Components