Why is my blower not working on my Chevy Silverado?
It could be faulty. Whether you have a physical fan speed switch or the dual climate feature in your Silverado, there is a button or switch that is dedicated to start or speed change of the blower for the AC or heater. Sometimes this switch can fail, and leave you with no way to turn on or operate the blower speed.
Why does my Silverado Sierra have no fan?
The failure mode on these is one or two of the resistors blow and you end up with just a few of the fan speeds or as previously mentioned the connector burns up and you have no fan speeds. Powered by phpBB © phpBB Group. phpBB Mobile / SEO by Artodia .
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.
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.
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.
How does the blower work on a Chevy Silverado?
Whether you have a physical fan speed switch or the dual climate feature in your Silverado, there is a button or switch that is dedicated to start or speed change of the blower for the AC or heater. Sometimes this switch can fail, and leave you with no way to turn on or operate the blower speed.
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.
Why does my blower fan not keep working?
There’s a switch or something located under the blower fan that goes bad, and not all the fan speeds will keep working. Like on mine, the lowest fan speed no longer works, but the rest do. That’s the blower resistor.