Pass key

Tiny
LAURALOVE
  • MEMBER
  • 1999 PONTIAC MONTANA
  • 160,000 MILES
For my 1999 pontiac montana, pass key is flashing. What is this?
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Thursday, July 7th, 2011 AT 2:35 PM

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Tiny
WRENCHTECH
  • MEMBER
That means that the security system is not recognizing your key.
The most common failure in these is the sensor in the ignition lock that reads the key pellet. That would mean replacing the ignition lock with a sensor included.

That sensor can be bypassed. You would need a digital ohmeter to measure the resistance of the pellet in the key. Now go to Radio Shack and buy a resister of the exact same value as the key pellet. Go to the base of the steering column and locate the two thin white wires that go up to the sensor. Cut the two wires and solder the resister between the two ends coming from the harness. This will permanently bypass the sensor but not the rest of the system.
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Thursday, July 7th, 2011 AT 2:54 PM

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