My blower motor works, but I have no air coming out of vents. I took everything off underneath to look and I don't see any cracks in the vaccum lines and all the doors seem to be opening and closing. I see three accuators and they all seem to open and close the doors. what else could it be? I also reversed the wires on the blower motor to see if I had the wrong blower motor but that wasn't it either.
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Sounds to me the blower motor is on it's way out and should be replaced. Even though they sound like there working doesn't mean everything is ok with it there are different parts on it that could go wrong and they way to fix it is with another blower fan and not a bad idea to do the resistor at the same time located in the blower box with about 4 wires coming out of it with one or two screws holding it in place all is located under dash behind the glove box area.
the blower motor is under the hood on the pass side. u have to remove the wiper and radiator bottles and also the head light. than take out the 7 bolts that hold the blower motor in than u have to remove the squirel cage before the motor will come out. or it could be the Blower Motor Resistor.
you may have had something fall down into the defrost vent and it has worked its way down and is blocking the air flow thats trying to come out the vents,near the blower motor.also does it sound like the blower motor is spinning on high speed or at a lower speed,you could have a slow turning blower motor.
"2007 chevy tahoe ltz--rear air works ---front air does not work." Hi! I guess you are referring to the front hvac blower not blowing air at any speed and not coming out at any vents at any mode position. If this is the case, you can start with the fuses at the underhood fuseblock. Check out the three hvac labeled fuses. If found okay, and the hvac controller on your dashboard seemed to be working normally, you better check out your front hvac blower motor underneath the right IP section. You need to verify if power is reaching your front hvac blower when requested by the a/c blower controller. I hope you get lucky. If this is not for you, perhaps a few more detailed symptoms would be helpful. : )
UNDO THE SCREWS FOR THE GLOVEBOX LIFT OUT THE WAY AND ON YOUR RIGHT HANDSIDE YOU WILL SEE 3 AIR DISTRIBUTION FLAP MOTORS ,THE ONE FOR THE WINDSCREEN IS THE NEAREST TO THE BULKHEAD. YOU CAN TEST THE BLOWERS AND YOU WILL SEE THE MOTOR VENTS WORKING OR THE ONE NOT WORKING IN YOUR CASE ..