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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1559 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC P1630 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

A new replacement PCM will be in a functional state to learn the password from the BCM. If the BCM is replaced, the PCM must be placed in password learning mode to relearn a new password. Once learned, the password becomes permanent information that remains with the vehicle. The loss of PCM battery or ignition voltage will not affect the programmed password information.

DTC P1630

Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Programming Immobilizer System Components  Go to Diagnostic System Check - Vehicle
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