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Re: Who knows Gm Passkey
Posted to Technical Discussion Forum on 9/1/2004 4 Replies

HI Robert,

The Passkey module doesn't need to know if the vehicle is cranking or not.

With the ign on, the Passkey module will send 5 volts down one of the two wires going to the lock cylinder. The resistor in the key, through the contacts in the lock cyli... Login to read more.

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