This is a common problem if the fan speed only comes on high and the rest of
the speeds don't work. If true change out the fan resistor under the
passenger side, where you place your feet. It has 2 screws and 4 connectors
and when you pull it out from its location it will have a thin metal piece
that fits up inside the vent almost blocking it.replace it. Junk yards are
full of these things got mine for 4.00 Dealer will charge you 40.00
"You can lead them to LINUX
but you can't make them THINK"
After reading through the previus posts... the most likely suspect is
the blower switch itself on a vehicle with that many miles. You should
also inspect the connection (plug) on the switch. Inspecting the plug
(connection) to the blower motor and resistor pack would also be in
order. Blower motors and resistor packs rarely get intermittent. The
normal blower failure mode is the bearings wear out and they make a
lot of noise... but keep working.
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