Why is my heater fan not working on my 2003 Chevy?

Heater blower motor fan won’t work in 2003 Chevy pickup half ton. Replaced motor had power on both wires in motor plug. I grounded the black one out now no power on either one.

How can I Make my Chevy heater blower fan work?

You have a fan resistence it should work in high speed only or not at all check all fuses to be sure you should have a 30 amp for the motor and is the motor new or used try the motor at the battery first to see if working before going further You can’t post conmments that contain an email address.

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.

What to do if your Chevy Suburban heater is not working?

A word of caution: If there is no coolant in your overflow, you can refill it by adding more to the overflow reservoir. There is almost never a situation where you would need to take the radiator cap off of the radiator to add coolant.

Why is my Chevy Impala heater not working?

If you have a heater core that clogged, it’s not going to be able to pass coolant through. Without the warm coolant going through it, there can be no heat. A bad heater core can also leak, so watch out for that. Feel your passenger floorboard to see if it’s wet. Heater core’s are typically pretty affordable.

Why does my Chevy Camaro heater not work?

They both should feel warm or hot to the touch with the engine on. If one of the hoses is hot, and the other one is cold, that is a pretty good indication that the heater core is clogged. If the neither hose has any heat, you may have air in the cooling system, low fluid, or low pressure.

What to do if your Chevy Silverado blower does not work?

Although you can jump to just separating the steering column cover. I find it much easier to remove the instrument cluster trim panel first. Then the knee bolster or under dash cover. Next a well placed screw driver and a little twisting and the tilt lever pops out.

Heater blower motor fan won’t work in 2003 Chevy pickup half ton. Replaced motor had power on both wires in motor plug. I grounded the black one out now no power on either one.

Why does my GMC blower motor keep running?

While driving today blower motor Kicked out, I turned up the fan speed and it kicked back in. Got to my destination, turned off the key and the blower kept running. 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.

What kind of car heater won’t stop running?

Heater fan won’t run, Heater fan won’t stop running – GM products, Ranier, Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, Envoy GM has issued a technical service bulletin (TSB) #06-01-39-002B to address problems with the front blower motor.

Why does my GM front blower not shut off?

GM has issued a technical service bulletin (TSB) #06-01-39-002B to address problems with the front blower motor. In some cases in cold weather the blower motor may not run, or if it does, it may not shut off when you turn off the vehicle. The TSB applies to the following vehicles with automatic temperature control:

Is the fan speed set or intermittent on a Silverado Sierra?

Just the blower is intermittent, not the compressor. Fan speed does not have set speeds, it’s more like a rheostat. It has the rotary control.

Where is the heater fan blower motor relay located?

Automotive Mechanic 25 years of experience Hello – the blower fan relay is located behind the glove box – small black plastic square. Make sure both fuses for the HVAC/heater are good, and have power to them (one is 10 amp, one is 30 amp).