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 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:

What are the symptoms of a failed blower motor resistor?

Blower motor resistor problems. Problems with a blower motor resistor are common in many cars. The most common symptom of a failed blower motor resistor is when the heater fan only runs at high speed and doesn’t work at low speeds.

Where is the blower motor resistor located on a Ford Escape?

In the 2008-2011 Ford Escape, the resistor is located behind the glove box on top of the HVAC unit air duct. It’s held by two screws and is easy to replace. See the photo. In the 2008-2011 Ford F150 the blower motor resistor is also located behind the glove box, but is installed in the right side of the plastic air duct.

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.

Where is the resistor on a blower heater?

Where is the blower motor resistor located on a car?

It’s located inside the dash, often on the opposite side of the steering wheel or inside the engine compartment on the firewall. A blower motor resistor or a blower motor control module is the part that controls the speed of the blower motor.

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:

How is the speed of the blower motor controlled?

The electronic module that controls the speed of the blower motor is called a blower motor control module. In some cars, the blower motor has only 4 or 5 fixed speeds. In this case, the speed of the blower motor is controlled by a blower motor resistor.

How much does it cost to replace a blower motor resistor?

The blower motor resistor or control module replacement is not very expensive. For example, one of our colleagues had a problem with his 2011 Ford Escape: the fan only worked at the speed 4. He paid $50 to diagnose and $112 to replace the resistor at a local Ford dealership.

What to do if your Chevy blower motor relay blows out?

The blower motor relay on your Chevy vehicle is essential for the operation of the blower. If the relay is blown out, you will need to install a new one is soon as you can. Thankfully, it is fairly simple to tell if the relay is malfunctioning and to install a replacement.

Why does my Chevy S-10 heater fan stop working?

If this system is wired as a simple circuit and has a ground side resistor to provide speed changes, that’s how it reduces the current flow. when using “hi blower” the resistance would be in the melted connector you found. If this system is controlled by a more complex climate control it may be scanned or self tested.

What causes a fuse to blow on a blower motor?

If the blower motor relay develops any sort of problem that hinders its ability to properly limit and distribute power, it may cause the blower motor fuse to blow. Any sort of electrical spikes or excessive current from a bad relay will blow the fuse and cut power in order to protect the system.

What makes the blower motor turn slower than full speed?

It’s this reduction in current (that the combination of resistor provokes) that makes the blower motor turn slower than full speed (HI). The one blower motor speed that doesn’t depend on the blower motor resistor assembly is HI since the blower motor switch accomplishes this speed by completely bypassing the blower motor resistor assembly.

What to do if your Chevy S-10 blower does not run?

The other 2 does fine. 1993 chevy s-10 2wd truck, no heat nor a/c, compressor does not run regardless of switch position. This has happened to me as well. The fix is a simple $18-$25 part, the Resistor Block, which is located inside the back Firewall adjacent to the Blower Motor Housing. Two (2) screws and it pops right out.

Is there a blower motor that does not work?

Blower motor does not work on 1 or 2 speeds. I have yet to attempt repair. I replaced the blower motor resistor but selection 4 (high) don’t work. Motor makes a squealing noise for a few minutes but stops on (3). But still blows. Blower only works on high.

How to test the blower motor resistor ( 1988-1993 pickup )?

CASE 2: All circuits tested had continuity where indicated in the test steps. This is good and is the correct and expected test result that tells you that the blower motor resistor is OK and not the cause of the blower motor speed problem. If your pickup’s blower motor resistor passed this continuity test, you can stop here.

Where to buy a blower motor resistor for a Chevy Silverado 1500?

If you prefer to shop in person for the right Blower Motor Resistor products for your Silverado 1500, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time! Use the fitment form at the top of the page to select your exact year and engine type for your Chevrolet Silverado 1500.

What are the symptoms of a bad heater motor resistor?

Symptoms of a Bad or Failing Heater Blower Motor Resistor. 1 1. Blower motor stuck on one speed. A common symptom of a faulty blower motor resistor is a blower motor that is stuck on one setting. The blower 2 2. Blower motor does not work on certain settings. 3 3. No air from the vehicle’s vents.

How much is a blower motor resistor from Advance Auto Parts?

Advance Auto Parts has 21 different Blower Motor Resistor for your vehicle, ready for shipping or in-store pick up. The best part is, our Chevrolet Silverado 1500 Blower Motor Resistor products start from as little as $25.99. When it comes to your Chevrolet Silverado 1500, you want parts and products from only trusted brands.

What does the blower motor resistor do in a car?

The blower motor resistor is an electrical component that is a part of the vehicle’s heating and air conditioning system. It is responsible for controlling the blower motor’s fan speed. When fan speed is changed via the knob on the instrument cluster, the blower motor resistor changes setting, which changes the speed of the blower motor.

Why is my blower motor resistor not working?

If there is power indicated on high blower speed, but not low or mid range, the problem is the blower resistor. Test for ground at the blower motor if there is power indicated at all ranges, but the motor does not function.

CLICK HERE TO RESET YOUR PASSWORD! Help! Fan quit working on all 4 speeds. AC light & recirc light still light up and AC compressor clutch engages when turning fan on in AC mode, but not getting the fan to work. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco).

What happens if you have a bad blower motor?

The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. Without it, the AC system will not be able to circulate any heated or cooled air.

Where is the blower control switch on the dashboard?

The blower control switch on the dashboard controls the circuit flow of the blower motor to adjust the voltage from low, to medium, to medium-high, to high. When on high, the circuit bypasses the blower resistor.

Why is my a / C blower not blowing?

A metal that when it corrodes, it turns white, and unlike copper, aluminum corrosion does not conduct electricity at all and causes resistance issues and can cause overheating of a circuit. Took out a common finger nail Emory board and went to work, both sides of each contact, then used a small brass brush on each side and along the tips.

What to do if your AC or heater is not blowing?

If your Blower Motor for the AC or Heater suddenly stopped blowing, look here first, it might save you several dollars. Situation, we have a friend that owns a 2017 Chevy Trax LT, she is a nurse who works with my wife, single mom and on a single mom budget.

What causes a blower motor to overheat?

Decreased airflow causes the blower motor resistor to overheat and fail. Reduced airflow also causes the blower motor to work harder, draw more current and that can cause repeat blower motor resistor failures. Blower motor is drawing too much power. Check the cabin air filter for clogging.

What should I do if my blower motor is not working?

If it’s good, refer to a wiring diagram for your vehicle and conduct these tests: Disconnect the electrical connector at the blower motor and jumper power and ground to the motor, bypassing all the speeds controls.

Why is the speedometer on my Chevy truck not working?

Inaccurate readings after changes to your Chevy: This is common with truck and SUV owners who change their wheels and tires, but can also happen if the wheel/tire combo is changed on a car. Larger combos, or those with different dimensions, will cause an inaccurate reading and the speedometer must be re-calibrated to regain accuracy.

What kind of heater does a Chevy 1500 have?

I have a 1992 chevy 1500 4.3l 2wd. Went out to start the truck and the heater controls were black wont come on no heat or ac. I have checked the fuses all good I have also put two new controls in and nothing.

Why are the heater controls on my truck not working?

Went out to start the truck and the heater controls were black wont come on no heat or ac. I have checked the fuses all good I have also put two new controls in and nothing.

How to fix a heater that quit working?

I started tracing the wires and found that there is a plug under the glove box there there is a HOT (red) wire that was overheating due to a bad connection and it was melting… here is where my plug is… – remove the screws on sides of glove box and remove the glove box it’s self…

Why does my GMC k1500 blower not work?

Here is a possible solution for your 1995 GMC K1500 blower that wont work on high. First remove the glove box and set it aside. Now look into the area that the glove box resided. You will see a wire harness covered in factory foam and next to this on the right you will see a flat silver box that is your ECM.

Where is the blower resistor on a 1988 Chevy?