Problem with Door Locks

[Kirk T]

I have an '85 K10 and the PO said there were no keys to the door locks so I bought new door lock cylinders. After installing the new lock cylinders, you could not move the lock knobs up or down with your hand and the electric locks would not function. I could lock and unlock the doors with the keys. I pulled the cylinders out of the doors to see what was going on and the lock knobs are easy to manually push down or pull up and the electric locks also function as they are supposed to.

I put the lock cylinders back in and once again the electric locks don't work and you can't lock/unlock the doors without the key. This is strange and I can't figure out what is going on.

Any suggestions?

 

[75Monza]

My guess is something with the lock cylinder lever is not phased right to the latch mechanism. Been too long since I've done one, so don't remember exact layout, did find this from LMC that shows a little around the 4 minute mark.

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