Blower Motor Resistor & Control Module – Key Features at a Glance
Blower motor resistors and electronic control modules regulate fan speed in vehicle HVAC systems.
Two types:
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Resistor‑based – uses series resistors to drop voltage; provides 3–4 fixed speeds. Generates heat, needs cooling fins; prone to thermal failure.
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Electronic module – uses PWM (pulse‑width modulation) for infinitely variable, smooth speed control. More efficient, with built‑in overcurrent, overheat, and short‑circuit protection.
Common features: compact design, plug‑and‑play connectors, integrated thermal fuse (resistor type), and diagnostic capability (module type). Operating voltage: 12V (24V for trucks); temperature range: –40°C to +85°C.
Failure signs: fan only works on highest speed (resistor burned out) or no speed variation at all (module failed).
Applications: passenger cars, commercial vehicles, and aftermarket replacements – essential for cabin comfort and defogging.
Blow Resistor|OE:526897DORMAN:973-032 973-430|Model:Buick 1990-77, Cadillac 1984-82, Chevrolet 1994-77, GMC 1994-78, Oldsmobile 1994-77, Pontiac 1993-76
Blow Resistor|OE:506552C1DORMAN:973-5091|Model:International 2017-90
Blow Resistor|OE:25709317DORMAN:973-562|Model:Cadillac DeVille 2004-01, Cadillac Seville 2004-00
Blow Resistor|OE:52469502,15-8623DORMAN:973-299|Model:Chevrolet Express GMC Savana
Blow Resistor|OE:7L24-19A706-ABDORMAN: 973-554 973-224 |Model:For Ford Explorer 2007-2010
Blow Resistor|OE:79330-SV4-003,,79330S47003DORMAN:973-121|Model:Honda Accord 1997-94
Blow Resistor|OE:MR513289,,8713852010,|Model:Mitsubishi 2012-05
Blow Resistor|OE:6Q0959263,6Q0959263A,|Model:Volkswagen New Jetta Santana Gran Santana Rapid Spaceback Fabia Polo
Blow Resistor|OE:2503727C1DORMAN:973-5094|Model:International 2017-94
