This has been a HUGE issue with C5 owners and GM is clear of any actions needed to rectify the issue because GM issued a recall about steering columns locking. Their "fix" just meant removing the locking plate, installing the 'K' harness, and reprogramming the computer so that if it sensed the steering wheel lock pin was in locking position, it would trigger the code and cut off fuel to the engine above 2 mph. GM fixed the safety issue where our steering wheels won't lock on the highway or when we are driving but they sort of left us stranded with this aftermath and no fix....until someone came up with the CLB which tricks the computer into thinking the locking pin is in the retracted position whether it is or not. An alternate method to getting around being stranded is to reprogram your computer to shut the fuel off at 200 mph so at least you can still drive your car if the code comes up.
I purchased my column lock bypass from Corvettes of Houston. I tried everything to get the column lock issue resolved when this happened to my car with the end result of just getting a CLB. They work great and I recommend anyone who has this issue to purchase one.