2003 Envoy XL with the automatic (electronic) HVAC controls.
About a week ago the (front) blower fan quit working. I pulled the connector out and checked the voltage at that plug. 11.77V on all levels of fan setting. So I figured the blower motor must have been bad. I even hooked 12V from the battery directly to the blower motor...nothing.
Anyway, $150 later (I was on a time crunch so couldn't do much shopping around) from the Chevy dealer I had a new fan. I even plugged it in at the dealer and the fan started spinning and responded to the fan settings. So I installed it and it worked for a day...now it seems to be intermittent (I'm not there to verify but that's what it sounds like.)
So, does this sound like a control module problem? (I'm thinking now the 11.77V on all settings may not have been what I should have been seeing. Does the controls vary the voltage or pulse the voltage to control fan speed?)
I did check all fuses and they are fine. There is a chance the old blower motor was fine...my hooking it to the battery wasn't the most scientific way. Like I said, I was on a time crunch at the time...
Any help would be very very appreciated...Thanks!
Andy
About a week ago the (front) blower fan quit working. I pulled the connector out and checked the voltage at that plug. 11.77V on all levels of fan setting. So I figured the blower motor must have been bad. I even hooked 12V from the battery directly to the blower motor...nothing.
Anyway, $150 later (I was on a time crunch so couldn't do much shopping around) from the Chevy dealer I had a new fan. I even plugged it in at the dealer and the fan started spinning and responded to the fan settings. So I installed it and it worked for a day...now it seems to be intermittent (I'm not there to verify but that's what it sounds like.)
So, does this sound like a control module problem? (I'm thinking now the 11.77V on all settings may not have been what I should have been seeing. Does the controls vary the voltage or pulse the voltage to control fan speed?)
I did check all fuses and they are fine. There is a chance the old blower motor was fine...my hooking it to the battery wasn't the most scientific way. Like I said, I was on a time crunch at the time...
Any help would be very very appreciated...Thanks!
Andy