What kind of blower resistor do GMC pickups use?
NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column. Some 1994 Chevy/GMC pickups use this type of blower resistor. For the 1995 and newer blower resistor test, the following tutorial will help:
Where is the blower resistor on a 1988 Chevy?
The blower motor resistor (located on top of the heater core housing and behind the glove box) isn’t hard to test. In this tutorial I’ll show you how to continuity test it with a multimeter in Ohms mode ( Ω ). NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column.
What are the resistors on a blower motor?
The purpose of these resistors is to reduce the amount of the blower motor’s current that’s passing through them. As you select a blower speed, the blower motor switch reroutes battery power to a specific combination of one, two or all three of these resistors (within the blower motor resistor assembly).
Where are the resistors on a Chevy pickup?
Two individual resistors make up the blower motor resistor assembly on your Chevy pickup. As you’re probably already aware, these resistors are located between the A/C-Heater control panel and the blower motor. The purpose of these resistors is to reduce the amount of the blower motor’s current that’s passing through them.
NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column. Some 1994 Chevy/GMC pickups use this type of blower resistor. For the 1995 and newer blower resistor test, the following tutorial will help:
The blower motor resistor (located on top of the heater core housing and behind the glove box) isn’t hard to test. In this tutorial I’ll show you how to continuity test it with a multimeter in Ohms mode ( Ω ). NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column.
How to test the blower motor resistor ( GM 4.3L )?
How To Test The Blower Control Switch (GM 4.3L, 5.0L, 5.7L). CASE 2: All 3 terminals had 12 Volts where indicated in the test steps. This is good and is the correct and expected test result that tells you that the blower fan switch (in the A/C-Heater control panel) is OK. Your next step is to bypass the blower resistor using a simple jumper wire.
When did the GMC 3500 get a blower motor?
This typical circuit diagram of the blower motor and blower resistor circuit applies to the 1996, 1997, 1998, 1999 Chevrolet/GMC 1500, 2500, and 3500 Pick Ups. You can find a complete list of GM 4.3L, 5.0L, and 5.7L tutorials in this index:
Is the blower resistor on my GMC Sierra on fire?
This was preformed on a 2004 GMC Sierra with a blower resistor that had been on fire and melted the wiring. Loading…
This typical circuit diagram of the blower motor and blower resistor circuit applies to the 1996, 1997, 1998, 1999 Chevrolet/GMC 1500, 2500, and 3500 Pick Ups. You can find a complete list of GM 4.3L, 5.0L, and 5.7L tutorials in this index:
Where is the factory blower motor resistor located?
Locate the factory blower motor resistor just above the passenger side floor board. Remove the 2 screws that secure the blower motor resistor to the blower and unplug the connector to the blower motor. Disconnect the vehicle’s battery and cut the red, black, and purple wire on the 3 wire connector that connects to the blower resistor.