Question about 2005 GMC Envoy
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Posted on Jan 02, 2017
There may be a stuck relay Stuck in the "On" position. A relay is a remote switch that does the heavier work of a smaller or more delicate switch. It is probably under the seat but if you have "memory" seats that move the power seats back and forth it is probably the control box causing the problem. It has relays inside it.
Posted on Jun 30, 2009
if the other speeds work it is probably the blower resistor; if applies varying resistance to the voltage running the blower; this allows the fan to run at different speeds; should be located very close to the blower motor; behind a panel under the passenger side of the dash
Posted on Jun 27, 2010
SOURCE: 2005 gmc envoy xl.rear a/c
First thing to do is check the fuses. Check ac fuses and relays and auxilary relays. If okay you may have a bad blower motor or blower motor resistor
Posted on Oct 24, 2010
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