My son has a 1994 Chevy C1500 and we had a problem today and I want to see if it's what I think it is. The part where they key is inserted is stuck in the forward position (not all the way forward) and it will not go back to the off position. We are able to pull the key out in while it is in this position. We tried using WD40 to see if that would loosen it up - not it did not help. Do you think it's the ignition lock cylinder? I want to but the part and have someone replace it versus taking it to a dealer. I'm new to this so any help would be appreciated. Thanks!