How to Replace a Blower Resistor on a 2004 Chevy Tahoe

The blower resistor for your 2004 Chevrolet Tahoe is a critical component for the heating, ventilation and air-conditioning system. The resistor works in conjunction with the fan speed selector switch, located on the center dash console. A faulty resistor unit may cause one or several fan speed selections to quit working. Replacing the resistor unit is an easy task, requiring only simple hand tools to complete.

Instructions

1

Examine the underside of the dashboard and locate the protective cover above the front foot wells.

2

Remove the seven 7 mm bolts that secure the plastic cover to the underside of the dashboard, using the appropriate size socket and ratchet.

3

Pull the cover from the passenger side foot well to expose the round-shaped blower motor cover and attached blower motor resistor. The blower motor resistor features a rectangular wire harness connection and two bolts that secure the unit to the blower motor.

4

Disconnect the rectangular-shaped harness plug from the resistor unit. Take note that you must lift the small locking tab on the harness plug while performing the disconnection procedure.

5

Remove the two bolts that secure the round-shaped plastic cover to the blower motor, using an appropriate size socket and ratchet. This will allow you to gain better access to the remaining single-wire connector for the blower motor.

6

Disconnect the single-wire connection from the side of the blower motor. Unlike the resistor unit harness, you must depress the locking tab for the blower motor connection for disconnection.

7

Remove the two bolts that secure the resistor unit to the blower motor housing, using an appropriate size socket and ratchet.

8

Slide the resistor out of the housing. Slide the replacement resistor unit into the blower motor housing and replace the bolts. Reconnect the single-wire connection to the blower motor and secure the round-shaped cover.

9

Connect the rectangular-shaped harness connector to the replacement resistor unit.

10

Reposition the protective cover for the underside of the dashboard and thread the seven 7 mm bolts by hand to secure the cover. Finish tightening the bolts with the 7 mm socket and ratchet to complete the replacement procedure.