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.
When did my GMC Sierra air conditioner stop working?
I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.
Why is my blower not working on my GMC Sierra 1500?
The connector that plugs into the blower motor under the glove box became too hot and melted the plastic resulting in the a/c and heat not to work (this includes the windshield defroster).
Why are the cooling fans not working on my 2006 Chevy Silverado?
2006 chevy Silverado Electric cooling fans do not come on. Replaced all relays. Checked the fans by hot wiring them to the battery and they function. Other than the PCM what else could it be? Clicking this will make more experts see the question and we will remind you when it gets answered.
I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.
What kind of HVAC does a GMC Sierra have?
Involved are certain 2003-2006 model year Chevrolet Avalanche, Suburban, Tahoe; GMC Yukon, Yukon XL; and 2003-2007 model year Chevrolet Silverado and GMC Sierra vehicles equipped with a manual HVAC (CJ3) or heavy duty heater (C42).
Which is GMC Sierra blower is not fully functional?
#10240: Special Coverage Adjustment-Heating, Ventilation, and Air Conditioning Blower Not Fully Functional or Inoperative – (May 9, 2011) Subject: 10240 – Special Coverage Adjustment – Heating, Ventilation, and Air Conditioning Blower Not Fully Functional or Inoperative
Why is my GMC Sierra 2500 not working?
What are common reasons my GMC Sierra 2500 HD has air conditioning problems? While there are a variety of reasons your GMC Sierra 2500 HD 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.
When does my AC blower motor come on?
When it does come on, usually after about 20 minutes of drive time, it blows great. At times it will come on as soon as I crank engine, at times it will not come on at all.
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 kind of motor does a variable speed blower use?
Variable speed blower motors don’t use a blower motor resistor. Instead they use a blower motor speed control or a power transistor. Variable speed motors are most often used in vehicles with automatic climate control.
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.
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 happens if the blower motor only works on high speed?
In other designs, the failure of 1 resistor means you lose only one speed. However, most car makers bypass the blower motor resistor completely when you move the fan speed switch to high. If your blower only operates on its highest speed, chances are you have the series type of blower motor resistor. This is the most common failure mode.
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.
Where did the GMC Sierra 2500HD come from?
1st owner purchased on 03/09/06 and owned in SD until 10/14/14 • 2nd owner purchased on 12/30/14 and owned in SD until 01/09/19 • 3rd owner purchased on 01/19/19 and owned in NE until 06/07/21. 1st owner drove an estimated 7,556 miles/year • 2nd owner drove an estimated 8,358 miles/year • 3rd owner drove an estimated 12,638 miles/year.
Why is my Silverado Sierra blowing cold air?
After fiddling with the controls a bit I gave up and rolled the windows down. About five minutes later it was eating at me so I switched the control from off to max and the fan kicked on like it was supposed to and was blowing cold air.