Why is my HVAC fan not working on my Silverado?

Good afternoon everyone! Just bought my first Silverado last November. The HVAC fan speed works on 1, 2 & 3, but not 4 or 5. I read somewhere that it could be a resistor problem.

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.

Can a Silverado dual temperature switch be replaced?

You can check behind the dash and inspect that the contact points of the switch aren’t dirty, damaged, or shot. If they are, you can replace them and try the system again. You can also inspect the wiring to make sure it is in good condition. Figure 2. Silverado dual temperature switch selector.

Where is the resistor module on a Chevy Silverado?

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. If the problem persists, visit your dealer or repair shop. Figure 1. Blower motor resistor module.

Why does my Silverado fan only work on 3 + 4?

I have an 01 Silverado and the fan only works on 3+4, so a solution would be very helpful if anyone knows one, thanks It’s probably a bad blower motor resistor. I would replace the blower motor as well. Usually what happens is the blower motor gets worn bearings/bushings and pulls too many amps, which in turn burns the resistor out.

Why does my Chevy Silverado 1500 AC stop working?

REPLACED A AC HOSE AT 60,000 MILES. AC GOT SICK AGAIN. PIN HOLE IN CONDENSER. I have a 2014 Chevy Silverado 1500. About 6 months ago I noticed the AC started to blow warm air. Over the course of a few days it progressively got worse.

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 is my Colorado air conditioner fan not working?

It’s probably a bad blower motor resistor. I would replace the blower motor as well. Usually what happens is the blower motor gets worn bearings/bushings and pulls too many amps, which in turn burns the resistor out. This is a common problem with the Colorados like the one I just got rid of…

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.

Why is the radiator not working on my Chevy Silverado?

If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your Silverado is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.

How can I tell if my Chevy Aveo radiator fan is bad?

You can test the voltage going from the fan relay to the fan itself. If it is getting 12+ volts, the fan should be coming on. But if it’s not, which means the fan has gone bad. This video from Ratchets and Wrenches is a phenomenal resource on how to properly diagnose a wiring problem.

Where is the high side switch on a Chevy?

Locate the high- and the low-side switches. The high-side switch is located on the smaller of the two air conditioning lines close to the radiator on the passenger side of the vehicle.

Where is the a / C pressure switch on a Chevy?

Low pressure will destroy a compressor through a lack of oil, and must therefore be repaired as soon as possible. Locate the high- and the low-side switches. The high-side switch is located on the smaller of the two air conditioning lines close to the radiator on the passenger side of the vehicle.

Why is my Silverado Sierra blower not working?

Additional Info: The resistor makes a clicking sound when the control knob is turned to setting five. Another thread suggested that the contact plug may be burnt and need cleaning/replacing. That would restrict power flow. Got the same problem with mine on 2nd highest setting, gonna look into it in spring.

Where are the fuses in a Chevy Silverado?

Passenger Compartment Fuse Box № A Protected Component 1 – – 2 10 HVAC Components, Electronic Suspension C 3 15 Front Axle Actuator, Transfer Case Shift 4 10 Passlock Sensor, Transmission Control Mo

How to test a Chevy Silverado HVAC system?

Plug in the electrical harness. Now set the fan and heater controls to off and the temperature controls to the coldest setting. Reconnect the battery, turn the key and listen for the actuator to click. Wait five minutes then test the controls to see if it worked.

How do you turn on a high speed heater fan?

Now pull the zip tie tight and cut the long end off with side cutters. Now reconnect your battery and turn your ignition switch back on and fan speed switch on high. The fan should be blowing on high, now wiggle the connector one more time the fan should stay on without interruption.

Good afternoon everyone! Just bought my first Silverado last November. The HVAC fan speed works on 1, 2 & 3, but not 4 or 5. I read somewhere that it could be a resistor problem.

Where is the high speed fan on a Silverado Sierra?

That must be it behind the glovebox. Pulled the connector off, still had the high only speed. The high setting must be a direct connection to the motor. I’ll work on it more tomorrow.

What kind of blower does a 99 Silverado have?

I suspect the blower resistor which I just bought at the dealership. My ’99 Silverado looks like a ’98 and has the 5.0 V8 so I wondered if the place I bought it had it advertised wrong. I found out mine is the ‘Carryover model’.