Question about 2006 GMC Envoy

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Mode motor where can i find the mode motor for the vents

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Behind the dash driver side middle top of the air handling system, above the gas pedal.

Posted on Mar 30, 2014

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1 Answer

1997. Why won't it blow air out of vents?


is the blower motor working. if so then maybe you have a mode selector problem not switching to vent, or a blockage in the vents.

Jul 23, 2015 | Honda Accord Cars & Trucks

2 Answers

What diverts air to defrost. Air comes out vents and floor. ac works and heat , but won't go up to dash vents. The flaps are working.


You just THINK the flaps are working, but apparently the top vent is not. These multiple flaps are controlled by vacuum and you have a line off to that particular flap. This means the flap won't open and the vacuum leak, whether you can hear it or not, is making you lose MPG also, though slight. The vacuum line could be cracked or disconnected from the flap or at the vacuum block on the back of the lever unit.

Aug 18, 2014 | Cars & Trucks

1 Answer

2002 ford explorer AC and heat blowing in dash, but very weak from the vents


On the motorcraft parts web site, you can blow up
a picture of the HVAC Blend Door Motors & locations,
as well as part numbers

You can get failed motor from Amazon

With knowing where the motors are located, try switching
the air flow modes manually, to see what positions do not work

Then you know what motors to replace

I also have professional scan tool software & can see the codes
for the motors in enhanced data.

The-- Vent Blend Doors-by name

Defrost-up top
Cabin -the vents as you say in the middle & on the sides
Floor
Recirculate-under the glove box
Blend Door -under the dash on your print

Mar 11, 2014 | 2003 Ford Explorer

1 Answer

Front defrost not working


as always, check fuses first.
then scan this car, it will show, mode motor errors. huh?

those are damper. in the heater box.
there are 2 fail points (besides wires)
the control is bad,
or the damper is failing.
The FSM covers this 100%
or at alldata.com

what tech does is makes sure the control sends the signal
the damper (there are 3 types used on all cars)
if its damper motor , the FSM shows the damper tests.
which are unique to Toyota. and a spec, year, 2006.
the mode damper is failing.
the only question is why,
the answer is simple tests. detailed in all FSM of all cars made.

here ill look your up to see which of the 3 type class it is.

your car has a ACC brain, a/c controller, this controller runs the show.
it gets your inputs from the defrost switch and then sends signals
to the mode motor.

FSM quote

Air Vent Mode Control Servo Motor ControlWhen the mode select SW is pushed, the ECU in the A/C control assembly activates the air vent mode control servo motor.
The servo motor rotates to the position (FACE, BI-LEVEL, FOOT, FOOT/DEF, DEF) selected by using the mode select SW,
and moves the damper.
In auto mode, A/C control assembly controls the damper to move to the best position for the conditions without operating the
mode select SW.

I SAY SCAN iT
using any scan tool that suports full Toyota. full scans including
extended factory codes..
i say buy one.
here is one.
http://www.amazon.com/gp/product/B001QIUGVI/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

owning complex cars, and DIY, you need a real scan tool
or just guess.

Feb 18, 2014 | Toyota Prius Cars & Trucks

1 Answer

The fan stopped working for the rear AC/heat in our 2003 odyssey. Checked 40amp suqare fuse under hood and it tested ok. Is there a fuse or breaker for the rear fan motor?


The large fuse you checked is for the rear fan blower motor. The fuse you need to check is for the fan motor relays and rear mode control motor. It is fuse No. 3 (7.5A) located in the driver's under dash kick panel fuse box.

If fuse No. 3 is blown and you replace the fuse and it blows immediately, you'll have to check the five relays and the mode control motor all located near the rear A/C unit in the right aft sidewall. Most likely, the mode control doors have become jammed and that is why the fuse blows. The doors shift air from overhead vents (cool) to floor vents (heat).

If the fuse is fine, the trouble is probably with the blower motor itself or the wiring to the blower motor is broken, or there is a bad ground.

Feb 28, 2011 | 2003 Honda Odyssey

2 Answers

The defrost and the floor vent does not work in my 2005 Dodge Neon... It sounds like the air is blowing in the dashboard, but does not come out of the vents


If there is no vacuum to the mode door control motor theheater/A/C system will default to "Defrost" If there is no air coming out the vents or floor - check to see if you have air blowing out the defrost vents. If there is air coming out the defrost, then the most likely cause of your problem is a broken or disconnected vacuum line that feeds the mode control switch. On your vehicle, the vacuum supply line connects to the brake booster hose under the hood. there is a check-valve on the line between the firewall and the brake booster that can fail and leak vacuum. if there is no problem with the vacuum supply line under the hood, then the most likely cause is a bad mode control switch. (switch leaking vacuum)

If there is no air coming out the defrost vents, but you can hear the blower motor running, there is most likely a resriction of airflow etween the blower motor and the air outlet plenum. I have seen A/C evaporators completely cloggedup that will not pass any air. I have also seen paers and napkins that have gotten sucked out of the glovebox area and into the "Recirc" air inlet. Another thing I have seen several times is nests made by mice or other small rodents in the blower motor housing.

Dec 05, 2010 | Dodge Neon Cars & Trucks

1 Answer

Clicking noise in AC/Heater unit. Doesn't do in


the motor that opens the vent is stuck. Put in it fresh air mode. the vent should be on the pass side behind the glove box. Take off the glove box and disconnect the motor and replcae it. Or the cheap way is to not use that mode

Dec 05, 2009 | 2004 Chevrolet Cavalier

1 Answer

2005 Merc. Grand Marquis a/c full blower does not work. a/c goes through defrost vents and/or floor vents. Direct a/c vents go on, but kick off and switch to defrost vents, etc. Someone said it was the...


it not a motor its a module and you have look behind the radio in the dash and find it the dirrection section is not working for the area you dont get air

Sep 11, 2009 | 2005 Mercury Grand Marquis

1 Answer

Air stops blowing through the vents when accelerating


u have a loss of vacuum to the ac mode control switch, this switch applies vacuum to diff vacuum motors to move air to diff outlets, dash, floor, defrost etc. either the vacuum line or vacuum resivior at the engine is leaking or the mode control is leaking vacuum.

Aug 14, 2009 | 2003 Lincoln Navigator

1 Answer

Heating/AC mode door does not move2004 Silverado 1500


If it is a ATC automatic control temperature , you will have to find the code. if it is vacuum controlled you will have to check the vacuum hoses that control the mode door. maybe something fell into the defrost vents and it got stuck. the only solution for that is to try fishing out the object through the vents..

Nov 17, 2008 | 1999 Chevrolet Silverado 1500

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