Dying PCM P0601

[Chevy366]

Update ; Took TB out for drive, no DTC or dying. Not going to say "fixed" just yet, but looking good.

[Chevy366]

Fixed. SO if you get a P0601 code on a 06 TB just full flash and it seems to fix it. [after checking to make sure of no checksum error]
I did notice when I was inspecting the PCM that a rubber bumper (not a baby bumper) was loose, I used some double sided tape to reattach it, the rubber bumper applied pressure on the PCM housing as a dampener and a spacer to make the PCM snug in the PCM mount.
PCM had been rattling around in the mount, indicated by the wear marks on the back of the PCM.