I was really surprised when I went to do the relearn and it started right away. I had to pull everything back out to work on the A/C and to get the canister out and I put the PCM back in and it works fine.
It's not usually needed when you take out the PCM and put it back in. Only when the PCM is new to your car.
2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI
NAIOA moderator Still Imp'n, just in a different Imp.