OnStar Description and Operation (UE1 with IOB/IO6)
This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Micr
DTC B0997
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
appro
Theft Deterrent Module Replacement
Preliminary Procedure
Front Floor Console Replacement.
Theft Deterrent Module
Procedure
Disconnect the electrical connector.
Control Module References for programming and setup information, if
required.
IMMOBILIZER SYSTEM COMPONENT PROGRAMMING (WITHO
DTC C0176
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy Based
Diagnosis
An overview of each diagnostic category can be found here:Diagnostic