2001 GMC Savana 2500 Base 8 Cyl 5.7L
Body & Interior
AC/Heat blower/fan malfunction. 3 lower speeds don't work; only high speed fan setting works.
replaced entire dashboard ac/heat control panel; nothing changed. All fuses appear fine. What next?
Have u replaced the blower motor resistor?A bad resistor will cause the blower fan to work only on high speed.