First of all I would like to say thanks to all that have responded and offered suggestions to me to relieve this issue. So far for the two best suggestions are (1) when parking the vehicle and turning it off, remove the key from the ignition and do not turn the steering wheel. (2) if upon entry ready to start vehicle and key will not turn, try the remote start. I hope that this does the trick as I would rather keep the truck than deal with the b.s. of a buy back or whatever. Overall it is a good truck and does what I need it to do.
But I've got a bone to pick about this being "normal" operation as though me being a non-gearhead type, this is far from "normal" in my humble opinion based on being 60 years old and never, ever heard of this before. When it first happened in 2014, neither the dealership or GM had any idea of what I was talking about. If they didn't know, how is it normal operation? Personally and through my business in the last 20 years I have purchased new 12-15 new Chevys (including 4 other trucks) and 5-10 other brands as well. I've owned 20-30 other used cars in my life and I have never, ever heard of this problem and I refuse to accept it as being "normal."
Surely I am not the only person out there that upon the purchase of a new car sits down with the owners manual and reads it cover to cover absorbing every word. Instead I referred to the dealer and GM and they didn't know themselves so I refuse to accept this as normal operation.
Hopefully it won't lock up again as I attempt to remember to never turn the steering wheel after removing the key from the ignition and if it does I hope that the remote start will alleviate the issue.
Until then thanks to you all for your help. I will keep you posted. Might be awhile. Best regards to all.