Heater Blower Motor Resistor For Chevy Express/ GMC Savana 2500 3500- 89018770

Heater Blower Motor Resistor for Chevy Express and GMC Savana 2500 3500

This heater blower motor resistor restores proper fan speed control on Chevy Express and GMC Savana 2500 3500 vans, cross-referenced to OEM part 89018770.

Overview

This heater blower motor resistor controls the voltage sent to the blower fan so you can select low, medium, and high speeds from the dash. It replaces a failed resistor that leaves the fan stuck on one speed or dead entirely. A direct-fit replacement for Chevy Express and GMC Savana 2500 3500 owners handling their own HVAC repairs.

Built For Performance

• Restores all blower fan speed settings from low through high
• Direct-fit replacement for the original resistor location
• Cross-referenced to OEM part number 89018770
• Plug-in electrical connector matches the factory harness
• Constructed for continuous duty in HVAC blower circuits

Fits These Machines

• for Chevy Express 2500
• for Chevy Express 3500
• for GMC Savana 2500
• for GMC Savana 3500

On-The-Job Use

• Restoring cabin heat and defrost airflow in cold weather
• Repairing a blower fan that only works on one speed
• Fixing a fan that stops working after the resistor burns out
• HVAC service on cargo vans and work vans

Specs At A Glance

Good To Know

Q: How do I know the resistor is the problem and not the blower motor? A: If the fan works on only one speed or not at all, the resistor is the usual cause, while a fan that will not turn on any speed can point to the motor or wiring. Test the connector for power before replacing parts.

Q: Does this resistor need any programming after installation? A: No programming is required; it plugs into the factory connector and works with the existing dash controls. Confirm your van's model year and connector style match before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.