Question about Cars & Trucks
Assuming the fan speed is consistent, check your coolant level.. sounds like air is in there
Posted on Nov 14, 2014
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Posted on Jan 02, 2017
as you said relay is good,try to check 4 connection of relay,pullout relay,check if there a 12 volts supply,, a 12 volt control by ignition sw.,connection to blower motor, the last connection is to the switch mostly connected to ground.
Posted on Feb 15, 2009
you cannot repair the actuator you need to replace it with new one. These motors turn but get weak with time. if you test it, it works, put it in and it doesn't. this is because the motor is weak, unfortunately GM does not sell these motors separately.
Posted on Aug 23, 2009
Check the blower multispeed control resistor pack is not faulty.
The resistor pack is usually located in the air ducting, in the blower fan airflow.
Basically, +12v power is supplied (via fuse) to the fan speed control switch, which then passes via the selected speed control resistor, to the fan motor. Often a interface relay is used to switch the blower motor high current.
Posted on Aug 31, 2009
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