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can we assume you have checked all the fuses?
particularly #33 under the back seat?
and can we assume you checked for codes using the built in scanner -
with the key ON - engine OFF -
do you hear anything at all from the havc system ?
do you hear the fan from the cabin air-temp sensor -
it's behind the small grill to the left of the steering wheel -
if you turn the temp slowly up to 90* -
does the display change - but absolutely no sound?
what if you slowly change the temp to 60* -
if you push the RECIRCULATE button - can you hear anything move -
we just had a lot of rain - and 40* -
now it is in the single digits -
was the car outside in the rain -
is the car outside now -
my thought is that all the flaps on the various control doors have frozen shut -