Question about Chevrolet Suburban 1500

1 Answer

1999 Chevrolet Suburban ac selector door motor.

Where is the selector door motor for the vent, defrost, floor? And is it verry hard to change?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,118 Answers

It should be under dash next to gas peddle on left end of heater box not that hard 2 screws and a plug. its called heater blend door actuator.

Posted on Jan 28, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Need pitcure of vaccum lines on 1999 Ford Ranger v6 3.o air and heat blows only threw the defroster.


Item Part Number Description 1 18A318 Vacuum Control Motor-, Panel/Defrost Door 2 18A478 Panel/Defrost Door (Full Vacuum Position) 3 - Defrost Air Flow 4 - Side Window Demister Air Flow 5 18B545 Temperature Blend Door (Full Heat Position) 6 19860 A/C Evaporator Core 7 19A813 Air Inlet Duct Door (Full Vacuum Position) 8 - Outside Air Inlet 9 18A318 Vacuum Control Motor-, Air Inlet Duct Door 10 - Recirculated Air Inlet 11 18527 Blower Motor 12 19A566 A/C Vacuum Reservoir Tank and Bracket 13 - Vacuum from the Engine Intake Manifold 14 19B888 A/C-Heater Function Selector Switch 15 - Vacuum to the 4x4 Hub Solenoids 16 18495 Water Diverter Valve (Full Vacuum Position) 17 18476 Heater Core 18 18A559 Floor/Panel Door (Full Vacuum Position) 19 - Floor Air Flow 20 18A318 Vacuum Control Motor-, Floor/Panel Door 21 - Panel Vent Air Flow

Dec 09, 2016 | Ford Ranger Cars & Trucks

1 Answer

A/c and heat dash vents won't work but all others are fine

check the actuator motor on the heater sounds like the motor is not directing the air as it should. The motor is in the center of the truck inside attached to the heater and has arms on it to move the heater and ac doors.

Jul 05, 2014 | 1999 Chevrolet Silverado 1500

1 Answer

Air not blowing out of vent on 1999 chevy suburban


Jul 21, 2012 | 1999 Chevrolet Suburban

1 Answer

1997 dodge Ac not blowing through front vents

Depending on what system is in that truck you may have a bad blend door motor or a vacuum leak, check around the engine for ant vacuum leaks or dissconnected lines, if its controled by selector motor then motor may be bad, this motor move the door to contorl which way the air comes out ,like defrost or vent or floor, the actuator motor is located under the dash bolted to heaterbox, this may be hard for you to find as there are 3 ,actuator motors, they control the recirculation door then one for temp and last the selector actuator. the best way to locate bad is to locate one at a time and watch as you move all heat controls until you find the one that doesnt move, that will be the bad one. hope this helps.

Aug 22, 2010 | 1997 Dodge Ram 1500 Club Cab

1 Answer

My air condition is only coming out of my Defrost vents. what can I do to fix it..

This may be caused by two things depending on the type of system, you may have a vaccum leak to the controls from the engine, like a broken vacuum line or your selector motor is bad, this motor moves a door in the heater/ac box that controls the flow of air to defrost vents or floor.i would say a 2004 jeep would mostlikely use the actuator motor instead of vacuum, have the selector motro checked.

Aug 09, 2010 | 2004 Jeep Liberty

1 Answer

AC/Heat/Defrost inoperable

Chanses are its either the blend door motor quit working or the controls ( temp., selector, blower) in dash are bad, my 95 did the same thing i chg. the blend door motor thinking it was that, but it turned out to be the controls in the dash, 5 minutes work and 140.00 later it was fixed.

Jan 12, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Airflow problem through ac vents

Your selector panel is bad, ( temp, blower, ect.) all one unit, my 95 did same thing chg. that unit and it fix it.

Aug 19, 2009 | 1998 Chevrolet C/K 3500

2 Answers

1995 Suburban HVAC - no defrost or vent only floor mode

I have a 1500 chevy picup that did the same thing the control panel (blower, temp, and selector) is what was the problem with mine replaced that and fixed it. Very easy to chg.front of dash pops off control panel pops out 1 plug ( yours may have 2 plugs)
pop back in and your done.

May 28, 2009 | 1999 Chevrolet Suburban

1 Answer

AC vent not always changing

there should be a little canaster insid the dash maybe attach to the duct work it changes the position of the door if not it may be the control slide that you move to change the position of the heats function

Mar 04, 2009 | 1999 Chevrolet Suburban

1 Answer

1996 GMC Suburban heater blows on floor

yes those controls are vacuum controlle. Could be as simple as a bad hose or connection.

Feb 18, 2009 | 1999 Chevrolet Suburban

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

726 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides