Hummer Forums - Enthusiast Forum for Hummer Owners - Factory key not engaging ignition switch easily, more often than not now

I had just got my 2007 H3 back from a friend's shop from having the rotors, calipers, shoes replaced, and the system flushed. I returned home and backed it into the garage for the night. The next day I parked it in the middle of the garage floor to switch to my new wheels and tires. After I finished, I inserted the key and it wouldn't turn to start the vehicle. I gently tried and tried. I called my shop buddy and he thought there was pressure on the 'pin' and told me to rock the vehicle forward and backward and try it. That was a no go. I was parked on a level flat tiled floor. I turned my steering wheel back and forth while trying to turn my key and it finally broke free.

First off, I don't think what I did helped the key to engage correctly, and I was surprised that I didn't have locking steering with the key off. Sometimes I still have a slight issue getting my key to engage. Don't know if this is from the shop or my changing the wheels but I did not torque my wheels until they were firmly on the ground. I only snugged them before lowering them from the floor jack. All I know is, before all this, I had smooth operation with my key engaging the ignition.

What are the issues that would prevent a key from turning the ignition switch once inserted. Bent pawl??? I do know they changed out my Transmission switch sensor and now I don't get a CLUNK when I switch to reverse anymore( and I doubt that will interfere with transmission pin engagement) .... strange..... Before this, I recently got it back from a GM dealership after they changed out my door lock tumbler and had no issues. It seems to be in the switch only and unobstructed from wheel pressure on the trans pawl. Thanks for your help, in advance... Scott