Question about 1992 Chevrolet K1500
Not stated but assuming blows out at defroster or on floor? If yes, then check for vacuum leak. Trace the vacuum hose where it enters the firewall back to volume tank (possibly ball shaped) and on back to vacuum source at intake. If it attaches to a multi-line connector then also check each line that attaches for leaks. If problem not found then check line from firewall into cab. The line will go to the climate control switch and from there to the actuator on air diverter doors. Some times difficult to find but you can do it! Good luck.
Posted on Jun 28, 2009
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Posted on Jan 02, 2017
if vent doors are operated by vacuum check for loose or broken vacuum hoses in the engine compartment , or check the fuse box for any ac/heat fuses if it is a electricaly controoled system
Posted on May 04, 2009
Some thing you could look at would be this. The control is usually fed by a vacuum line or small hose thats is connected to your intake manifold.
With a cold engine,look for a skinny vacuum hose that runs from the intake toward the fire wall . It should be going inside the cab and connecting to the A/C vent control.Some times the hose becomes disconnected or splits or cracks due to heat under the hood.
Thats usually the trouble.
I hope this helps you.
Posted on Oct 06, 2009
SOURCE: 2005 tahoe no air blowing
as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..
Posted on Oct 13, 2009
Changing the blower motor resistor will solve the problem of the unchanging fan speeds and the blower motor having power when the ignition is turned to the off position. Beware that there are three different kinds of blower motor resistors. There is a manual, automatic, and a digital that in appearance is greatly different from the first two. The blower motor resistor is located on the passenger side below and behind the glove box. The kick-plate under the glove box will need to be removed by two screws and wha-la, behold is the motor and resistor.
Posted on Oct 14, 2009
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