Strange blower
 

'04 Sonata GLS...I turned the blower up to 4, no fan. Turned it down to 3,
no fan, down to 2,1, no fan. Down to 0 and the fan comes on high. Up to 1
the fan stays on high until I go to 2 and above, no fan until I go back down
to 0. Back to the dealer.