Funny part about what you mentioned, I tried that method. But, I wasn't able to get it to work. I even used a pick to try and free the door.
I put my cell phone camera in macro mode, and used it to examine the inside of the cylinder, as best as I could. I didn't see any door that was mentioned in that service bulletin. I tried the "bounce" method where I was in and out of the slot with the tip of the key, no dice.
I just placed an order for AcDelco ignition housing and cylinder. If I'm not able to code the key, I'll definitely call a lock smith to assist.
Wednesday, September 9th, 2020 AT 6:26 PM