2002 Chevrolet Avalanche Logo

Related Topics:

A
Anonymous Posted on May 19, 2014
Be the first to answer

Chevy avalanche problems

Ac blows out defrost ,,but not out the regular ac vents

Answer This Question

5 Related Answers

Anonymous

  • 59 Answers
  • Posted on Dec 10, 2008

SOURCE: no air flow to dash vents and feet vents

99% of the time when they do that it is the control head. that is the thing you adjust all your temp settings on. have to purchase from dealer. have last eight digits of vin # when ordering.

Ad

Anonymous

  • 1 Answer
  • Posted on May 17, 2009

SOURCE: on my 1995 chevy blazer s-10 my face vents are not blowing air

the vacuum on the rear of the engine that goes to the vacuum ball mounted n the hood may be disconnected

Anonymous

  • 90 Answers
  • Posted on Jun 01, 2009

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

Anonymous

  • 491 Answers
  • Posted on Sep 09, 2009

SOURCE: I need a vacuum line schematic for a 2003 chevy

Replace the complete heater control vacuum line over the motor with rubber vacuum tubing.
The heater vacuum line connects on the drivers side of the engine halfway back on the intake manifold.Run the new line to the heater vac connection at the passenger side at the right front in the engine compartment.
I change 2 a week....this should be where your problem is.

Testimonial: "That took care of it. I did change from that small vacuum line to the large rubber and ran it up to a wire loom overhead so as not to get as hot."

Mike

  • 4383 Answers
  • Posted on Jun 30, 2010

SOURCE: my ac only blows from defrost and floor

Look for vacuum leaks. System is designed to fail in defrost mode. so.... vac hose off, for example, would cause an issue like you describe.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
1answer

I have a 2010 chevy avalanche air only blows thru
check on gm recall list
Read full answer
Sep 09, 2014 • 2010 Chevrolet Avalanche
0helpful
1answer

I have a 2010 chevy avalanche air only blows thru front vents nothing thru defrost or floor. The AC works but not the heater please help
sounds like bad mode actuators need a scan tool to verify voltage and operation
Read full answer
Sep 09, 2014 • 2010 Chevrolet Avalanche
0helpful
1answer

'89 chevy blazer s10. Warm NOT hot air or Ac
Possible blend air door malfunction.
Read full answer
Dec 30, 2017 • Cars & Trucks
1helpful
1answer

My heater does not blow in floor in a dodgeram 1500
the heater vacuum motor and lines needs to be checked.Also get the blend door checked.

NO HEAT ON FLOOR VENTS

---------

As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html


------------

No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------

Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

-----------

Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

----------

Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

--------------

Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

-----------

1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

--------------

No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

----------

Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

----------

Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

---------

Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

---------

Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

----------

2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html

-------------

2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Read full answer
Nov 28, 2012 • Cars & Trucks
0helpful
1answer

No heat from vents

As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

------------

No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------

Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

-----------

Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

----------

Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

--------------

Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

-----------

1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

--------------


No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
----------

Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

----------

Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

---------

Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

---------

Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

----------

2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html


-------------

2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Read full answer
Nov 28, 2012 • 2006 Ford Taurus
0helpful
1answer

I changed mass air flow sensor on 04 Avalanche now Ac is blowing out defrost vents how do I fix this ?
alot of the ac units run off vaccum. sounds like a line might be off or leaking. hope this helps.
Read full answer
Aug 12, 2012 • Chevrolet Avalanche Cars & Trucks
1helpful
1answer

Ac blows out of defrost vents only
it is your blend door not opening properly.
Read full answer
Oct 05, 2009 • 2002 Ford F150 Regular Cab
0helpful
1answer

2004 Chevy Silverdo Crew Cab
if your ac is on max i believe it recirculates the air in the car by sucking air in by the defrost vents and blows it back out of the normal vents try to move the controls to make sure the that the shutters are working and make sure the ac is not on max by selecting the knob that has an arrow going through the little car instead of the circular one that might fix the problem
Read full answer
Jun 29, 2009 • 2004 Chevrolet TrailBlazer
7helpful
1answer

AC blows through defrost and floor vents instead of ac vents
You have a vacuum leak in the system that controls the vent doors. First check for cracks at the vacuum reservoir, then check the various vacuum hoses and vacuum motors for a leak.
Charlie
Read full answer
Jun 18, 2009 • 1999 Cadillac DeVille
4helpful
1answer

Air only blows on floor with very little coming out the defrost or regular vents.
Hope you have the same set up, sure you do. You may have either crossed your vaccum lines or when you were putting your heater/ac box back together or you may of pinched the vents somewhat closed. Cycle through the different zones to ensure the vents are moving as your are selecting (defrost, floor, ect...) If you think the vaccum lines are correct then you may have a reassembly issue with the Heater/ac box. I had the same problem with my 2000 Dodge Ram 4x4. Use the KISS rule "keep it simple stupid" start with the vaccum lines and all your wiring to the motors, make sure everything is plugged in. Hopefully you'll find it there before going back into the box again.
Read full answer
Apr 28, 2009 • 2000 Dodge Ram 1500 Truck
Not finding what you are looking for?

View Most Popular

2002 Avalanche

  • Cars & Trucks

Related Question

I have a 2010 chevy avalanche air only blows thru

  • 2010 Chevrolet Avalanche

38 views

Ask a Question

Usually answered in minutes!

Popular Questions

Chevy avalanche/spare tire remove

2007 Chevrolet Avalanche LTZ

How do I replace tailgate handle

2005 Chevrolet Avalanche

Power door lock on chevy equinox does not work on one door how can it be fixed

2008 Chevrolet Avalanche

Club car golf cart intermittent no spark

2002 Chevrolet Avalanche

2003 checy avalanche...need brake line

Chevrolet Avalanche Cars & Trucks

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Chevrolet Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

john h

Level 3 Expert

29494 Answers

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

Answer questions

Manuals & User Guides

PDF Manual
. 2002 Avalanche Manual

2002 Avalanche

Loading...