Hey All, I have a 2002 GMC Yukon my wife drives. Had a weird HVAC issue just pop up yesterday and wondering if some of you have some experience with it. Since we bought the vehicle, the blower motor always worked except on the most high position (I have the progressive blower switch, not the 1, 2, 3, 4, 5 positions...and mine is not the dual climate control option, just single control). It would work all the way up to the high position just fine, but as soon as you put it on high, it would cut off. Didn't worry about it for a while since everything else was working just fine for the time being.
But just yesterday, now I only have heat on the floor (doesn't matter if I turn blend to cold or turn from feet to defrost, only have heat on floor now), and as soon as I start the vehicle up, it blower motor immediately starts to progress on its own from low all the way up to blowing high and then cuts itself off and will not run no mater what position you put the dial to. But to make it even more weird...as soon as you hit 60 mph, the blower motor kicks on high and will only stay on high no matter what you put the dial to while above 60 mph, but as soon as you drop below 60 mph, blower motor kicks off. And, our A/C button has a little light on it to signify when you have the A/C on, and no matter what we do, that light is always on now (even though, like I said, I only have heat on the floor at all times). And all of this showed up immediately at the same time yesterday.
Did some reading and read about it's common on these years that the blower motor resister goes out, but the blower motor is only one problem, then there is the no blend for heat/cold or feet/defrost either. I kind find it highly unlikely that the blower motor resister and the both blend door actuators all went out at the exact same time, and I don't like to just start throwing money at parts and see what fixes stuff.
I was wondering if this could just be the whole climate control panel has gone to crap? Anyone had something like this before? Haven't dived into it yet as it just happened last night and I'm at work doing some research so I can work on it this weekend. Any input is appreciated.
Thanks!
But just yesterday, now I only have heat on the floor (doesn't matter if I turn blend to cold or turn from feet to defrost, only have heat on floor now), and as soon as I start the vehicle up, it blower motor immediately starts to progress on its own from low all the way up to blowing high and then cuts itself off and will not run no mater what position you put the dial to. But to make it even more weird...as soon as you hit 60 mph, the blower motor kicks on high and will only stay on high no matter what you put the dial to while above 60 mph, but as soon as you drop below 60 mph, blower motor kicks off. And, our A/C button has a little light on it to signify when you have the A/C on, and no matter what we do, that light is always on now (even though, like I said, I only have heat on the floor at all times). And all of this showed up immediately at the same time yesterday.
Did some reading and read about it's common on these years that the blower motor resister goes out, but the blower motor is only one problem, then there is the no blend for heat/cold or feet/defrost either. I kind find it highly unlikely that the blower motor resister and the both blend door actuators all went out at the exact same time, and I don't like to just start throwing money at parts and see what fixes stuff.
I was wondering if this could just be the whole climate control panel has gone to crap? Anyone had something like this before? Haven't dived into it yet as it just happened last night and I'm at work doing some research so I can work on it this weekend. Any input is appreciated.
Thanks!
