lol. i tried a impact when doing my inlaws CKP, didnt work. had to use the rest the breaker bar on the control arm, unplug the icm, and use the starter method. i put it back on with my father inlaw holding the flywheel with a big pry bar while i tightened it

An oopsie has come to mind.

The HB Bolt looks like it is TTY. I presume it means that it should be replaced, but where can I get another one? I can't even find a listing for it?

Ive removed that bolt before using a long breaker bar. Lowering the car enough so it would sit against the ground & giv the engine a crank or two to break it loose. Works like a charm every time!

Probably only going to get that from a dealer, you could check Nalley Buick Parts.

BOLT. Engine Crankshaft Pulley and Balancer.
1993 Buick Park Avenue ULTRA.
Stock Code 24504736

Found that for 13.94 plus shipping.
I know it says Ultra, but it should be the same bolt, it is listed as 126 in the diagram I am attaching, I see a washer listed and in the diagram, but I see it says it is not needed, I have not removed one yet myself, so I am not sure if you need one or not, I am sure if yours had one you could just reuse it.




BOLT. Engine Crankshaft Pulley and Balancer. 1993 Buick Park Avenue # 24504736