Car Won't Start and Security Light is On on Buick Riviera

Problems with 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 key and ignition lock cylinder should be replaced to correct this condition.

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Average mileage: 126,737 (92,400–210,000)
6 model years affected: 1990, 1991, 1992, 1993, more1995, 1998
11 people reported this problem
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problem details
1991 Buick Riviera 97,000 mi,
bypassed the system with inline resistor
1990 Buick Riviera 92,400 mi,
car wouldnt start with new battery and starter..security light was on..put in new lock cylinder and replaced a bad wire going to the tumbler...that fixed it.
Car will start, but stall within a second. Was told it ha to do with key
1998 Buick Riviera 120,000 mi,
The security light started coming on and staying on and as long as its on the car won't start. It literally just happened one day while I was at work. I can see my car the entire time while I'm working so nothing was done to it. I just went out to get in and it wouldn't start. The problem is still not fixed.
The car periodically just won't start - No noise, nothing. The battery is good. Then wait some time - 5 minutes, 2 hours or whatever - and it starts right up. There is not pattern to it. It happens at random times. Sometimes it goes a long time before it happens, and at other times it happens more frequently. Very frustrating when it does happen though.