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DTC P1634: Improper Ignition 1 Input
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Diagnostic Procedures
Diagnostic Procedures
Fig 1: DTC P1634: Improper Ignition 1 Input (Steps 1-6)
Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P1634: Improper Ignition 1 Input (Steps 7-15)
Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P1634: Improper Ignition 1 Input (Steps 16-22)
Courtesy of GENERAL MOTORS CORP.