AC Blower fix
Member
Joined: Feb 2010
Posts: 83
From: Greeneville, TN
If you order the red connector that attaches to the resistor (GM Part #12059296), it is just a plastic case you need 5 Terminal Pins GM 12015860. Your dealer should have them in stock (msrp $1.02)
You also should use a proper crimping tool.
You also should use a proper crimping tool.
Senior Member
Joined: Aug 2009
Posts: 1,461
From: Rochester Hills, Michigan
Near the beginning of this thread I saw the fix for the resistor was to remove the red plug and solder the wire directly to the terminals in the resistor, but not replacing the resistor. I have a concern if there is a problem with the resistor there will still be heat buildup and the wire will just burn up in a different place maybe up the wire harness in a weaker place. I installed a new resistor and a new red plug. I was thinking if the resistor went bad I would rather it burn up the red connection than burn up a spot further up the harness.
As far as the resistors having a 'problem', resistors are either good (generating heat by resisting the flow of current), or bad (open circuit, not allowing current to pass through, and no heat produced).
Last edited by Broken Halo; Jul 20, 2011 at 09:46 AM.
Member
Joined: Feb 2010
Posts: 83
From: Greeneville, TN
The gauge of wire used, and the terminals themselves, are sufficient to handle the amperage passing through them to operate the blower. The reason for the heat build-up and consequent melting of the red housing is the 'arcing' from the spade terminals not making ideal contact with each other. If you solder to the terminals, you won't have the 'arcing' travel up the wires.
If the resistor is faulty does it just cause a loss of one or more of the fan speeds?
Senior Member
Joined: Aug 2009
Posts: 1,461
From: Rochester Hills, Michigan
Direct current (not passing through the resistor) will operate the blower at maximum capacity. When the current passes through the resistor, it's reduced, and gives you the different speeds. Think of it as a dimmer on a light switch....that's a resistor.
Junior Member
Joined: Jul 2011
Posts: 3
Thanks for the info mine is fixed
Member
Joined: Aug 2010
Posts: 33
Great info...I took a little different approach. I cleaned the contact. I soldered a wire onto the one terminal only. I drilled out the melted plastic male connector and removed the wire. Then I plugged it back together with the wire running through the enlarged whole and connected it to the source wire.
Junior Member
Joined: Aug 2011
Posts: 2
Mine is a 06 with over 60K miles. The blower just went out and the harness was burn't as described by all others. I did the fix but was wondering if the resistor is suppose to be really hot.
After doing the fix I turned on the A/C before putting the resistor back in the housing and the risistor was damn hot and smelled like it was burning. Normal? if so, when you put it in the housing, does the fan blower blow on the resistor to keep it cooler?
Thanks in advance.
After doing the fix I turned on the A/C before putting the resistor back in the housing and the risistor was damn hot and smelled like it was burning. Normal? if so, when you put it in the housing, does the fan blower blow on the resistor to keep it cooler?
Thanks in advance.
