Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello and welcome.
the most common problem on this system is the ignition lock cylinder. The lock cylinder is what reads the chip in the key. There are 2 small white wires on the back of the cylinder that break, and the key cannot be read. To be sure, you would have to remove the lower dash trim panel, find a small connector with 2 very small white wires. Put an ohm meter with 1 lead on 1 wire, the other lead on the other wire going up into the column. There should be no resistance with key not in ignition. As soon as you put key in, you should get a reading. If not, then the cylinder must be replaced. You can also try to tilt the coulumn up and down while looking at meter, and you may notice a reading come and go. Tilting the wheel sometimes makes the wires touch, which will let it start.
There is a company that has info that can be wired in to bypass....