Check your fuses then the blend door motor
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Testimonial: "Yes I checked all the fuses and relays under the hood on the right side on the console and even the fuse box behind the passenger side tire in the trunk... All relays and fuses are in tact and good. I changed the entire climate control unit in the csar same proble... Plenty of freon in the system. so... So all I can seem to find left to replace is the moade actuator blend. Is there a way to test the old one before I buy the new one? Like can I remove the actuator and test it some how? Also does this vehicle have more than one or is it just the one on the right side of the steering colum attatched to the what appearsd to be the main box for the heating and air... As I said before the only ting that works is the blower perfect on all speed but no temp control only blows out abient temp air and onely air comes from the panel vents no matter where you try to change the flow on the climate control no foot air no window defrost now foot vent air and the ac button now the recycled air flow or fresh air flow.. Jusat the vents does this seem to be the actuator not working.. Does this actuator control wether or not the ac runs or the positioning of the air flow and the recycled vs. fresh air circulation? I cannot think of anything else it can be related to... I still have the dash broken down to the point of being able to get to anything under the open dash well actualy my 17 year old son will will have to get under there as I am to old to go crawling under the dash and working in such a confined area... He is in his 1st year almost finished of becomeingf a certified licenced mechanic... So any other suggestions , advice or alternate theories will be VERY much apprectiated... I need to get this done asap I live in florida and it rains everyday at the same time my wife has to drive it and I really need the car in full working condition she has ou youngest that she takes to and rpicks up from day care it is very close to needing the ac on and having the window defroster working to keep them safe... Again thanke everyone for your help aqnd advice in advance... Sincerely Robert Stabile"
Removing a seat is the easiest way to work under a dash for any extended amount of time. there should be two motors on the HVAC system one for the vents and one for the temp control. One bad part will keep the system from working, its hard to troubleshoot a electrical problem(about the toughest repairs) make sure all connectors and GROUNDS are clean. If power is comming in, it needs a out.
Dave I an going to go ahead an remove thge drivers side seat hear in the next hour or so so that I can get to the actuator,,, under the dash on the drivers side.. where is the other actuator ? Or does the malibu only have the one in the event there are two where would I locarw rgat one
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SOURCE: There is no air flow
You need part GM Part number 89018675 or ACDelco 15-73596. The Mode Selector Actuator. What happens is the part is a CHEAP part POORLY designed and when it goes to turn the flaps inside the HVAC unit its the plastic gear slips instead of turning the flap!!!
Just to forward you you might want a deal to install this art for you unless your good at fixing your own vehicle, because you need SMALL sockets and a lot of patience to get this part in!!!
The part is ALMOST directly above the steering shaft for your steering wheel, so theres a lot you got to remove before you will even see them!!!
I only recommend you to have a dealer put this part in for you, unless you have your own service manual!!
Because there is 5 of these darn things and if you pick the wrong one you will have to do it all over again!!!
3 on the Drivers side and 2 on the Passengers side!!
But replacing this part SHOULD solve all your problems!! AS it did for me and i was having the same issues as you have described!!
SOURCE: Heat or air only comes out from window defrost.
try changing your whole heater switch unit that should work
SOURCE: heater control stuck blowinf hot air out vents
did you cheked if there is enough refrigrant ( freon ) in your tubes by measuring the pressure . if there is you may need to check your condensor its may be clogged and not letting enough air comes through to cool the refrigran
SOURCE: 04 Chevy Tahoe Climate control issues.
HVAC control head problem or it is the air Temp Control Valve problem. THe control head is the one with the buttons and knobs and the control vavle is located on the HVAC carrier assembly underneath dashboard (two of them one on left and one on right in center). This is a job for someone who has knowledge of HVAC and electrical on a GM vehicle.
SOURCE: 2003 Trailblazer No air from front face vents
first check to see if you have power going to the actuators when you switch the switch to it location if no power replace controller if you have power and no movement from actuators replace actuator. if actuators move remove hvac box and check for broken blend doors.
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