Problems with the anti-theft systems using the raised-chip key can prevent the car from starting. The wires in the steering column to the ignition lock cylinder tend to break. The the key and ignition lock cylinder must be replaced to correct this condition.Google+
Car Problem Reports
Buick LeSabre Car Won't Start Because of Anti-Theft System That Uses Raised-Chip Key
Buick LeSabre Problem
Average Mileage: 123,535 mi (32,000 mi - 270,000 mi)
Visitor, 1997 Buick LeSabre, 270,000 mi
Same problem with key. Mech. thought it was the starter but even with a new one no starting at all. They tried to re-program but no positive results at all. Put it in neurtal and started once but would not start after. My Security light was on for about 8 months prior but no problem starting the car at that time. Security light turned off for about 3 weeks before this so I thought it was OK-reset.
When I turn the ignition ,all lights come on but it doesn't start
Visitor, 1996 Buick LeSabre, 165,000 mi
when the key is turned no power to anything but,insttrument lights.
the car would not start do to anti-theft system. I cleaned the key tried again and it started. this has happenthree times since I have owned the car.
Visitor, 1998 Buick LeSabre, 53,451 mi
Car wouldn't start. Had it towed. Anti-theft system was found to be culprit.
Visitor, 1995 Buick LeSabre
Car Won't Start Because of Anti-Theft System That Uses Raised-Chip Key
VATS failed due to broken wire inside steering column ignition switch. Total bill including keys, reprogramming, etc. $550.
Visitor, 1997 Buick LeSabre, 65,000 mi
had to get new keys and ignition cylinder replaced. About $500
Visitor, 1999 Buick LeSabre, 121,000 mi
May try wiring a resistor in the wiring harness to bypass the reader.
Visitor, 1997 Buick LeSabre, 86,973 mi
car would not start had to replace ing switch $569.43. dealer