How to fix a Chevy Express heat fan blower?

– Resistor Replacement, Wire Harness Repair – YouTube Chevy Express Van- Ac/Heat Fan Blower issue Fixed! – Resistor Replacement, Wire Harness Repair If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

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.

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.

Is there an issue with the Chevy Express?

Chevy Express Van- Ac/Heat Fan Blower issue Fixed! – Resistor Replacement, Wire Harness Repair – YouTube Chevy Express Van- Ac/Heat Fan Blower issue Fixed! – Resistor Replacement, Wire Harness Repair

Can a GM blower control switch be replaced?

This is no cause for concern since the circuit descriptions are the same for all of the GM vehicles covered by this repair tutorial. You don’t have to buy the whole A/C-Heater Control Panel to replace the blower control switch since the switch is removable. You can find the blower switch just about in anywhere.

How to test the blower fan control switch?

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. For this test go to: TEST 2: Using A Jumper Wire To Bypass The Blower Switch.

Where are the fuses located on a Chevy Express?

Here you will find fuse box diagrams of Chevrolet Express 2003, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Why did my Chevy Silverado blower plug burn up?

Most aftermarket companies, NAPA CARQUEST ADVANCE will have replacement plugs you can splice in for about half the price of a GM plug kit, and they burn up because GM cheaped out on the size of the terminals and they get hot, when they get hot they loose tension which causes them the get really hot and melt the plastic plug.

What can I do about intermittent blower motor?

Try cleaning it by cycling the control from minimum to maximum rapidly a dozen times or so with the truck off. If that does not work you could take the HVAC controller out and try to get some spray electrical contact cleaner inside the rheostat and again swiping it a number of times.

What causes a bad or failing blower motor relay?

Blown fuses. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay circuit fuse. 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…

Why is my blower not working on my Chevy Silverado?

Another common problem will be the blower motor will stick in the ON position and never shut off. You can access the resistor module behind the fuse box located on the driver’s side lower dash compartment. You must visually inspect the resistor, and make sure it isn’t melted or burnt. If it is, then replace it.

Why does my blower not work at high speeds?

Blower works on slow speeds, but not on high speed. Check for bad fuse or bad high speed relay. Swap the high speed relay with another relay with the same part number. Also, check the fuse for the control side of the high speed relay. Make sure the ground side of the high speed relay is working. Blower works on some speeds but not others

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.

What to do if your Silverado blower won’t work?

Head under the hood and check the blower motor wiring to make sure it is getting power to it. If it is, then your only option is to remove the blower motor and have it tested or replaced. You can do so yourself if you have the equipment, or have it done at the dealership or parts store. Figure 3. Silverado blower motor and fan assembly.

Why is my air conditioning not working on my Chevy Express?

While there are a variety of reasons your Chevrolet Express 1500 air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. What will be the outcome of an air conditioning system diagnosis?

What happens if you lose the blower motor relay?

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. The blower motor relay controls the current used to power the blower motor,…

Why does my AC blower motor not work?

The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently.

Why is there no air coming out of my blower?

Have replaced the actuators, and the main controller. It does it no matter if you are running heat or A/C. Have changed the orfice to help get rid of some of the water build up. Still have same problem. Vents seem to work good until i select defrost and then the flow goes away.

Why is my AC blower not working on my 2006 Silverado?

2006 Silverado 2500HD blower speed control replacement. My brother has a 2006 Silverado 2500HD. The AC blower will not shut off. I know this is probably a bad resistor module under the dash so I ordered a new one. His has 3 wires in and two out to the blower motor. I was told there was an update kit and the new replacements have 7 wires in.

How does a blower work on a Chevy Silverado?

I USED A BATTERY CHARGER AND TOUCHED THE PRONGS TO THE E TERMINAL AND ALL OF THE OTHER TERMINALS. E TERMINAL IS THE GROUND AND A,B,C,D,F ARE THE BLOWER SPEEDS. THE FAN SHOULD KICK ON WHEN YOU HIT ANY OF THOSE TERMINALS WITH THE JUMPER CABLE PART OF THE BATTERY CHARGER.

Why is my Chevy Silverado heater not working?

While there are a variety of reasons your Chevrolet Silverado 2500 HD heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.

Why does my Chevy Silverado blower motor not run?

If the blower motor runs when all of the terminals were jumped together, it means the circuit between the resistor connector and blower motor is fine as well as the blower’s motor relay, but the blower resistor is bad and needs to be replaced.

What to do if your Ford Fusion heater is not working?

When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

What kind of Fan Fan does SpeedFan use?

SpeedFan monitors voltages, fan speeds, and temperatures. SpeedFan can dynamically adjust fan speeds based on changing computer temperatures. SpeedFan runs on Windows 9x, ME, NT, 2000, 2003, XP, Vista, and 7. SpeedFan also has 64-bit support. Loading…

Is there a way to control the fan speed?

The fan controller needs to be connected to the motherboard (or control the RPM directly on the fan controller on some models). Generally you connect all the fans to the controller, and then a connector goes from the fan controller to the motherboard so you can adjust the speed.

Why does my blower fan only work on one speed?

by Lee Sallings. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. This can be annoying, but troubleshooting is easy. If you start at the blower motor, and check resistance in the circuit, you will find the problem in no time.

What should I do if my GM fan won’t turn on?

Pull the negative battery cable and re-install, making sure it is very tight (also check the positive to make sure it is tight). See if this fixes the problem. Many of GM’s AC control heads have a built in reset feature that when power is removed and then applied it will go through a cycle that activates all the vent doors and mode doors.

How can I tell if my blower speed switch is faulty?

Test for power at all the blower speeds by moving the blower speed switch through all positions. A faulty resistor loses power at different positions on the switch. High blower speed has direct power to the motor from the switch. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse.

Can a PWM fan control the fan speed?

Generally you connect all the fans to the controller, and then a connector goes from the fan controller to the motherboard so you can adjust the speed. However, this is assuming you are using PWM fans as some fan controllers do not allow the control of 3-pin fans (and spins them at the max speed at all times).

How much horsepower does a Chevy Express van have?

4.3L V6 1 Standard on Express 2500 and Express 3500 Cargo and Passenger Vans and Cutaway Van with 139” wheelbase 2 276 horsepower and 298 lb.-ft. of torque 3 Maximum towing capability of 7,400 lbs.† (10) 4 Direct Injection and Variable Valve Timing

What kind of warranty does Chevy Express have?

Chevrolet Accessories are dealer-installed and covered by the GM 3-year/36,000-mile (whichever comes first) New Vehicle Limited Warranty when ordered with your new Express Van. See your dealer for details. Express 2500 Cargo Van with 135” wheelbase and available towing package.

Why is my blower motor only working at high speed?

The first thing that needs to be determined is the type of noise that is present and the possible sources. Rattling or knocking noises while… The blower motor only working on high speed is a common symptom of a failing blower motor resistor; but the fact the radio stopped working at the same time is unusual.

Why is my blower not working on my GMC Sierra?

When you switch to high,the blower motor relay coil circuit is grounded and voltage is now applied directly through the relay to the blower motor; bypassing the resistors. So, I would look to see if the relay is ok. It is a five terminal relay.

Why is my blower not working in Hi ( 5 )?

The usual failure of the resistor pack is if it works in HI (5) but not in any other mode or just a few modes. When you switch to high,the blower motor relay coil circuit is grounded and voltage is now applied directly through the relay to the blower motor; bypassing the resistors. So, I would look to see if the relay is ok.

What to do if your blower won’t work?

Is the Chevy Express 2500 a high roof van?

With so many full-size cargo and passenger vans coming to the market from a wide range of automakers, the 2016 Chevrolet Express 2500 comes across as something of a dinosaur, being one of the last old-school vans that can trace its roots back to the 1990s. There’s no high-roof version for extra-large cargo like you can get in several rivals.

What kind of engine does Chevy Express 3500 have?

A 6.0-liter V-8 with 323 horsepower and 373 pound-feet of torque is standard in 3500-series heavy-duty passenger vans and optional on cargo versions. Heavy-duty cargo vans can also be equipped with a 6.6-liter turbo-diesel V-8 with 250 horsepower and 460 pound-feet of torque.

Is the Chevy Express 2500 a cargo van?

2019 CHEVROLET EXPRESS 2500, New 2019 Chevrolet Express 2500 135 inch wheelbase cargo vans. These are hard to find most days. We have them in stock an… 2020 Chevrolet Express Cargo Van, BASE, 2020 Chevrolet 2500 Express Cargo Van, 4.3L V6 Engine, 8 Speed Automatic Transmission, 8600 GVW, Keyless Entry…

What kind of engine does the Chevy Express have?

2020 Chevy Express 2500, 4.3L V6 gasoline engine, automatic transmission, spring suspension, steel wheels… 2020 Chevrolet Express 2500, Chevrolet 4.3L V6 engine, automatic transmission, spring suspension, steel wheels…

Why is my Chevy Express blowing out the defroster?

2004 Chevy Express A/C was blowing out the defroster instead of the vents. When this happens it is usually a vacuum leak. I was lucky and my vacuum leak was easy to find and fix, as you can see. I hope yours is just as easy to fix as mine was. Good luck! Loading…

Why does my AC blow hot air only?

It applies only if your cars a/c compressor is turning on and the pipes by the compressor get cold but in the interior the car blow hot heater air. In this video we are working on a 2006 Nissan Sentra. But this issue happens on any brand in any car and the vent producing the issue is always in the same spot.

Why do the vents in my Chevy Silverado blow only?

Recharge the A/C. There may be air trapped in the system. Hot coolant is responsible for passing through the heater core, creating hot air which can than pass through the vents and into the cabin. On some occasions air can become trapped in the system, stopping the coolant from doing its job.

Why do my vents blow only hot or cold air?

Chevrolet Silverado 1999-2006: Why Do My Vents Blow Only Hot or Cold Air? The Chevy Silverado climate control system uses several different components that come together to either cool down or heat up the cabin. When one or more of these components fails, the heat or cold air capabilities go along with it.

What causes a Chevy blower motor to overheat?

Either of the above may cause the relay resistor module or wiring connector to overheat, resulting in one or more of the following symptoms: In very rare events, if the above symptoms are ignored, a fire could occur.

Why does the Chevy Avalanche blower keep blowing?

The auto climate control fan speed is controlled via PWM with a solid-state driver. Completely different system, and different issue. I am running into a similar issue. 2003 Avalanche, fan keeps blowing even after engine is off, fan turns on and off intermittently. Dual climate control.

What to do if your cooling fan won’t turn on?

Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor.

Why does my car have a radiator fan?

You probably already know the purpose of the radiator and the cooling system in your car. When you are driving fast, the wind is passing through the radiator to cool the coolant down without issues, but when you are driving slow, there is no wind pushed through the radiator. This is why we use a radiator fan.

How can I tell if my radiator fan is working?

When a radiator fan works it usually makes a whirring sound that is easily noticeable. However, the radiator fan does not always start spinning on ignition. The ECU signals the radiator fan to work at the precise time. So, do not worry if the fan doesn’t immediately start working. Visually check the fan if you don’t hear its noise. 1. Broken Fuse

How to test the blower control switch ( GM )?

Basics Of Troubleshooting The Blower Control Switch. TEST 1: Checking Continuity Of The Blower Switch Fan Speeds. TEST 2: Using A Jumper Wire To Bypass The Blower Resistor. Where To Buy The Blower Switch And Save. Related Test Articles. This tutorial compliments this one on testing the blower motor resistor:

How can I find out if my blower switch is bad?

To find out if the blower switch is bad you can do two different tests. One is to do a multimeter continuity test of the specific circuits that should be ‘closed’ when you turn the dial to the different blower motor speeds. The other, explained in TEST 2, is to bypass the blower switch and indirectly test the blower switch.

Where is the blower resistor on a 2017 Chevy?

Hit the A/C button, compressor is coming on, so not a low Freon issue. On the 2017, I located the blower resistor plugged into the duct on the passenger side, upper left area of the foot area, was surprised to find out that it could be accessed without even removing the cover for the blower area.

Where does the power go in a blower motor?

For each higher speed, power flows through one less resistor. Some car makers run blower motor power through the fan speed switch first, then through the blower motor resistor and then to the blower motor and ground. Other car makers reverse that and run power to the blower motor first and terminate ground at the blower fan speed switch.

Why does my Chevy Silverado blower not turn off?

This 2004 Chevrolet Silverado came in with the complaint that the blower motor will not turn off even with the key off. This is relatively common problem of the the full sized Chevrolet, GMC and Cadillac trucks with auto a/c controls. The first step is to lower the passenger side hush panel under the dash.

How long does a Chevy blower motor stay on?

In very rare events, if the above symptoms are ignored, a fire could occur. This special coverage covers the condition described above for a period of 10 years or 240,000 km, whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

When did the second generation Chevy Express come out?

In this article, we consider the second-generation Chevrolet Express, produced from 2003 to 2019.

Why does my blower motor not shut off?

Took my climate controls out and the fan continued to work, ended up pulling the 40amp fuse in the engine bay to shut it off so I don’t kill my battery. Whats the problem? Bad harness? Relay?

Where are the fuse panels on a Chevy Express?

Here you will find fuse box diagrams of Chevrolet Express 1996, 1997, 1998, 1999, 2000, 2001 and 2002, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Why is my Chevy Express heater not working?

At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Express, this process has failed in one way or another.

Why is the heater not working on my Ford Escape?

If the neither hose has any heat, you may have air in the cooling system, low fluid, or low pressure. If you look at your temperature gauge, and the engine is running hotter than normal, but there is not heat coming from the heater you may be having issues with the water pump.

Why is the heater not working on my Buick Enclave?

Not having a functioning heater makes driving much less comfortable, and can be a sign of certain issues. At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue.

Why does my car have no air in the vents?

Step 3 – A fan blower motor is controlled by either a switch in the passenger compartment or by a computer. If this fan motor is starting to fail it will cause the fan motor to run at a lower speed resulting in low air flow. To test this condition an amp meter is needed, connect the meter lead to the power wire of the fan motor.

How is a blower fan connected to a battery?

A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower motor resistor on the other end. The blower resistor is connected in series to the blower fan motor.

Why does my GM Truck heater not shut off?

At first I thought this might be normal and it would shut off after a slight delay. However, once I pushed the power button on the heater the blower still continued to run. I waited in the truck to see if it would shut off but in still continued to run.

Is the heater on my GMC Sierra still working?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I have a 2003 GMC Sierra and just today when I shut my vehicle off I noticed the heater was still moving air.

In this article, we consider the second-generation Chevrolet Express, produced from 2003 to 2019.

Is there no air flow from the vents?

Chevrolet Express 2500: NO AIR FLOW FROM HEATING AND AIR THRU… NO AIR FLOW FROM HEATING… The fan switch works, you can hear air blowing but none comes out out of the fronts vents some thru the floor and some thru defrost. Experience: ASE Master Certification. GM World Class Certification Hello and thank you for trusting me with your question.

Where are the vents on a car located?

Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow.

Why does my AC heater motor stop working?

The heater – AC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block.

Why does my blower fan not work on high?

Blower Fan Works on High Only This is a classic blower motor resistor problem which is common on older cars and trucks that use manual fan speed switch controls. This problem will also occur on climate control systems when the speed controller has burned out omitting full power to the blower motor. This can also occur with the ignition key off.

Is the AC / heater blower motor working on Level 4?

AC/Heater blower motor only works on level 4 (highest speed). haven’t fixed it yet. Blower motor only worked on settings 0 and 4. If set in between, freon continues to circulate through the system without any cool air being blown into the cabin.

Is the fan blower on my Dodge 1500 working?

We have a 2002 dodge the fan blower and radio will not work on it just went out yesterday…checked all the fuse and the seem to be fine…What else should be look for on it..ty 32 people found this helpful. 2000 dodge 1500.. Mine made loud noises and only worked on high .. But it filled truck with smoke so I replaced motor and now NOTHING…

Why does my GMC heater not work on high?

1997 GMC C1500 Heater/AC blower will not work on HIGH. I have replaced the black BOSCH relay behind the glovebox, the blower RESISTOR and the blower MOTOR and still cannot get the blower to work on HIGH. I remember in older model years of GMC’s and Chevys that their was a high speed blower relay that caused this issue.

Why is my Dodge Ram heater not blowing air?

Heater fan will not blow air, just suddenly stopped. Fuse is good, fan motor removed and connected to power and works fine. Re-installed motor, ran direct power to it and runs fine. Suspect faulty switch but don’t know how to test to confirm. Check the resistor first,this may be bad,dodge are bad for these burning out.

Why is my AC heater fan not working?

This sounds more like a problem with high speed fan relay. On the low speeds, the fan relay routes the voltage thru the resistor block. When you switch to high fan speed, the relay switches over to supply full voltage from the battery to the fan motor.

How to fix a Chevy Express heat fan blower?