Question about 1996 GMC Sonoma

1 Answer

Ac not blowing out top dash vents

My AC cools fine but I have no air blowing out the top dash vents. Only blow under dash.

Kenny

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 5,568 Answers

The baffles that direct air, heated or cooled, are controlled by vacuum 'motors.'
You may have a vacuum line off somewhere or the vacuum reservoir is cracked or one of its connectors (thin plastic protrusions) is broken.

Posted on Aug 30, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

I have a 98 Buick Lesabre Limited. It blows Cool air, but not Cold.And also, I can't seem to make it blow out of the Center Dash Vents.


Cornelius, vent problem could be a pinched or loose vacuum line on controller,faulty AC vacuum motor, faulty AC programmer,etc. needs to be checked out by a good Tech, diagnosed and estimate on repair.
As far as vehicle only blowing cool air, issue could be blend door issue, plugged AC condenser core dirt/debris, low AC refrigerant, plugged AC lines internal, failing compressor, etc., again should be checked out, diagnosed and estimate for repair by a good Tech.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
1998 Buick Lesabre No Air From Dash Vents
http://repairpal.com/ac-vent-problem-346
Car AC Not Blowing Cold Enough Car Repair Information From MasterTechMark
My Car Is Not Cold What Could be Wrong Elite Auto Repair

Jul 15, 2016 | Buick Cars & Trucks

1 Answer

AC not blowing out top vents


check the hose are not obstructed or broken.

Aug 03, 2008 | 1996 GMC Sonoma

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

Air vent heater


Check the vacuum can on the ac box. It may just be a broken vacuum line or the can can be bad. There is a baffle in there that has to move from AC to heat. Sound likes there no vac getting to the baffle vacuum can. Could also be the switch in the dash board controller. Depends on what type of car it is.

Nov 08, 2013 | 2006 Nissan Armada

1 Answer

Ac vents not working


There is a blend door acuator which moves when u change your settings. Its a electric motor. Down under dash, Will need a mech and a heating and cooling diagram to find where the motor is,

Jun 13, 2012 | 2007 Ford Sport Trac Limited

1 Answer

I have an 1988 Chevy Silverado. The AC blows cold but for some reason when I move the AC from the "feet" section to blow from the top vents, it doesn't change. Now the AC is stuck just...


Yes, you have a vacuum line that has come off, cracked or broke somewere under your hood. It's possible under dash vacuum diaphragm could be bad, but not likley....hope this helps you??

May 25, 2011 | Chevrolet Silverado Cars & Trucks

1 Answer

AC blowing behind dash


on your vehilce it does not use vacuum to control the vent direction.
It uses a series of actuators (electrical).
My guess is that the air blows out the defrost (top vents) this is the default position for the mode door actuator.
More than likely it will have to be replaced.

Aug 05, 2009 | 2001 Chevrolet Tahoe

1 Answer

Heat wont blow through heater or defroster vents


common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500

1 Answer

Air not blowing out top dash vents


Just posted my suspicions elsewhere:

The baffles that direct air, heated or cooled, are controlled by vacuum 'motors.'
You may have a vacuum line off somewhere or the vacuum reservoir is cracked or one of its connectors (thin plastic protrusions) is broken.

Aug 03, 2008 | 1996 GMC Sonoma

Not finding what you are looking for?
1996 GMC Sonoma Logo

Related Topics:

420 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

70346 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

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

Answer questions

Manuals & User Guides

Loading...