The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the operation of the switch.
Car Problem Reports
GMC Sonoma AC Blower Inop Due to Failed Resistor
GMC Sonoma Problem
Average Mileage: 125,333 mi (110,000 mi - 145,000 mi)
Setting I and II wouldn't work. Replace Resistor to fix.
Visitor, 2000 GMC Sonoma, 145,000 mi
HVAC Blower motor works at 1,2,3 and fails on number 4 setting