Is there anyway to bypass the security system to be able to get the car started

Tiny
ANDREWJ
  • MEMBER
  • 1999 PONTIAC TRANS AM
  • 18,400 MILES
If the security system light is on and it is causing the computer to shut the car down and not start, is there anyway to bypass the security system and get it started
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Sunday, September 25th, 2011 AT 11:39 AM

3 Replies

Tiny
WRENCHTECH
  • EXPERT
The security system cannot be totally bypassed as it is incorporated into the operating system however you can bypass the most troublesome component which is the key sensor.
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 and the Passlock Decoder Module.

That sensor can be bypassed. You would need a digital ohmmeter 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 wires that go up to the sensor. One is wht/blk and the other is ppl/wht. 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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Sunday, September 25th, 2011 AT 12:18 PM
Tiny
ANDREWJ
  • MEMBER
Just wanted to thank Wrenchtech so much for the advice on bypassing the sensor to be able to get my Trans Am started, we let it set for 5 days and then my husband got a resister and did what you said and it started right up, I guess my car just wanted a vacation, I bought it brand new in 1999 with 25 tested miles on it and now it has over 184,000 and it has never sit still that long at all, thanks DC
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Wednesday, September 28th, 2011 AT 11:36 PM
Tiny
WRENCHTECH
  • EXPERT
Glad to hear it worked out for you.
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Wednesday, September 28th, 2011 AT 11:38 PM

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