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Home >> Cadillac >> 2007 >> STS Base, 4.6 A, AWD >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Description and Operation >> Immobilizer Description and Operation >> Instrument Panel Module (IPM)

Instrument Panel Module (IPM)

IMPORTANT: The remote control door lock receiver (RCDLR) is not on the GM LAN high speed bus, therefore the RCDLR and the engine control module (ECM) must use the instrument panel module (IPM) as a gateway in order to communicate.

The IPM is a multifunction module. The IPM is used in the vehicle theft deterrent system as a gateway for the RCDLR to send a fuel enable message to the ECM. The RCDLR is not on the GM LAN high speed bus. The RCDLR will send a serial data message through the IPM as a gateway to the ECM to receive the fuel enable password.

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