Question about 1999 Buick LeSabre
99.9% of the time your cars computer that controls functions of the anti-theft system is in "error"...Take a multimeter and set on a DC mode, place the neg (-) and pos (+) probes on either side of the TINY metal probe sticking through the plastic in the shank of your ignition key. Read the value on the multimeter and write it down, click up through the range of settings allowed on your multimeter and repeating the process, write those values down as well.
Go to Radio Shack and ask for the resistor that most closely matches the ONE value you've written down. Also grab 4- 3M "scotchlocks" that are 12-14GA. and some electrical tape.
Inside the car, put the seat all the way back and grabbing ahold of the "shelf" of plastic right under the steering column **** down pretty hard, it should pop off. Lying on your back, looking UP at the bottom of the steering column...Locate the wire harness coming down from the steering column and locate the TWO ORANGE wires. Cut the wires. Place the 1st scotchlock on an orange wire and the end or "tail" off the resistor inside the scotchlock and crimp it down using EVEN PRESSURE with a pair of small pliers...this is a hassle and may take some houdini type act to get it all together and crimp at the same time! Repeat for the other orange wire, making sure the remaining "tail" of the resistor is inside the "teeth" of the scotchlock as well!...Now, all you should have between the two Orange wires now, is the resistor itself...no orange wires. Wrap electrical tape around the whole sheebang overlapping the Orange wires and resistor...NOW TRY YOUR KEY IN THE IGNITION-THE SECURITY LIGHT SHOULD BE OFF. Reassemble the dash and drive!
Posted on Jun 14, 2009
Either the chip on your ignition key is bad or the chip reader in the ignition swith is bad or both.
Posted on Jul 19, 2008
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Posted on Jan 02, 2017
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