03 HVAC doors stuck on def. after jump start
 

Hopefully I didn't toast all the acuators, but had a battery break internally and when a mine shop mechanic put a charger on 'start' (60amp as I recall). I had some 'buzzing' under the dash and sounded to be from the dash fuse panel area. Had him disconnect it as quick as I could. Borrowed a battery to get home and everything started, operates fine EXCEPT,, all the HVAC doors seem to be stuck and the AC blows out the defroster vents only. Rotate the dial to switch to floor or dash vents and nothing. I've tried searching for a blown fuse, (there must be 15 fuses the schematic labels as HVAC!!!) but can't can't fine one obviously burnt. The 04 has a boatload of plug-in relay/circut breakers (I assume) bith underhood and at teh end of the dash.

ANYBODY have any experience with the door operation in the 04 GMC Sierra SLE and any clue what I should be looking for????

HELP,, it was 109° here in southern Az today and the forcast is for more if not worse!!!!