Do I need a new CASE Relearn if I did one on my PCM, then swapped to 2nd PCM thenbac?

[sac811]

Basically did a CASE Relearn on my PCM(6.0 lq9), but was having problems with the A/C, so to check I swapped to a friends PCM(5.3) and did the minimum to make it run to see if AC would work.

Then I swapped back to the original PCM that I did the CASE Relearn on.

Now it just seems to run like crap like before the CASE Relearn.

Do I need to do it again?

I wouldn't even be asking if I had a laptop, but only have the FSV2, so can't do CASE Relearn. Have to ask a friend.

[joecar]

The PCM stores the CASE relearn info in the PCM's non-volatile memory... it might have gotten wiped out...

either way it won't hurt to do it again (if your friend is willing).