Question about 2002 GMC Envoy

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Clicking noise when turn on the a/c and the face vents are not discharging and air flow. the floor and defrost are working.

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Blend door in the heater box is either jammed or stripped on the gear to the drive motor.

Posted on Jul 22, 2010

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Posted on Jan 02, 2017

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1 Answer

Why is there a clicking noise from air conditioning vents?


Mode door or temp. door actuator, plastic gear is worn out . Can you change air flow , defroster , vents , floor direction etc... ? Change heat to A/C etc.. ?

Dec 23, 2015 | 2008 Chevrolet Impala

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Nissan sentra air conditioning


The flow switch it change's howthe air flows get a motor manual at auto parts stir about 25 bucs it will tell u what up

Apr 29, 2013 | Cars & Trucks

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Poor air flow through defroster vents


Got kids? Years ago, mine loaded the defroster ducts with toys, candy, etc.
Otherwise, please create another post and identify the year, make and model vehicle you're talking about before posting your question.

Oct 13, 2017 | Cars & Trucks

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1997 toyota camry climate control switch or servo not working fully


Blend doors not working. They are controlled electronically by small motors. Could also be something fell down in a vent and is blocking it from it's full range of motion.

May 26, 2017 | 1997 Toyota Camry

3 Answers

Heater clicking noise in gmc envoy


Do you hear a clicking noise when you turn your truck on? Its probably the actuator. While the defroster was on I removed the fuse locted under the rear driver side seat. I think its 36B. It stopped the clicking noise and my air vents work well now.

Dec 08, 2011 | 2003 GMC Envoy

1 Answer

What is a blender/ it is suposed to a part of the heater area


The "blender" would refer to the blend actuators that change the flow of air from floor to vent to defrost or combinations. Properly working blend doors will allow you to direct air to the dash vents, the floor, the defroster, the floor and defroster or the floor and dash vents. If it is not working the heater will still work but you will hae no control oer where the air flows.

Dec 19, 2009 | 1999 Jeep Grand Cherokee

1 Answer

My 2002 trailblazer is making a clicking noise in the a/c


more likely a broken door in hvac case.with car running work controls and watch actuaters operate to locate good luck maybee a little challange

Aug 30, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

No air flow out of face vents.


no, should be a acuator motor that does that

Jun 29, 2009 | 1996 GMC Sonoma

1 Answer

2001 ford focus defroster blows out ac vents


may be just a cable adjustment.


SECTION 412-01: Air Distribution and Filtering 2001 Focus Workshop Manual DESCRIPTION AND OPERATION Air Distribution and Filtering The new heating and ventilation system ensures even air distribution.
The temperature control and air distribution flaps are controlled by two operating cables. All vehicles have a recirculated air function, with the flap controlled by a servo motor.
Air is supplied to the windscreen and side windows regardless of the air distribution setting.
The clean air filter is fitted as standard in most countries. This cleans the incoming fresh air of pollen and dirt particles. It must be renewed after every 40,000 km under normal operation conditions, or after 20,000 km under difficult conditions. If no clean air filter is installed, a plastic grille is fitted over the air intake. This can easily be replaced with a clean air filter.
Air distribution operating switch
Face level The main flow of air enters the passenger compartment at face level.
Face level/floor level The main flow of air enters the passenger compartment in equal parts at face level and floor level, and a small amount flows to the demister nozzles of the side windows.
Floor level The main flow of air enters the passenger compartment at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist/floor level The main flow of air enters the passenger compartment in equal parts at the windscreen and at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist The main flow of air enters the passenger compartment at the windscreen and a smaller amount flows to the demister nozzles of the side windows.
Air distribution operating switch Air distribution operating cables
NOTE: The Bowden cables for LHD and RHD vehicles are identical. However, they are fastened to the air flap operating mechanism with the respective reverse side of their connectors.
The air distribution switch operates with two Bowden cables. The cables operate the air distribution valves in the heater housing.
To remove and install the cables, the rotary switch must be turned as far as it will go to the left. The air flap mechanism engages easily in this position, making the installation of the cables easier.
--------------------------------
Air Distribution Cable Control Assembly Removal
s1y~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
  1. Remove the radio/cassette unit and the CD player (if equipped). For additional information, refer to Section 415-01 .
  1. Remove the bezel with heater/air conditioning controls.
  1. Remove the bezel with heater/air conditioning controls (continued).
    • Pull off seven electrical connectors (six shown).
  1. NOTE: To remove the Bowden cables, turn the rotary switches as far as they will go to the left.
    Remove the bezel with heater/air conditioning controls (continued).
    • Unclip the Bowden cables.
  1. Remove the lower driver's side footwell trim.
  1. Unclip and remove the air distribution Bowden cables.
  1. Unclip and remove the temperature control Bowden cables.
    • Unclip and remove the temperature control Bowden cables.
Installation
  1. NOTE: Route the new Bowden cables without kinks and check for easy accessibility.
    NOTE: To install the Bowden cables, turn the rotary switches as far as they will go to the left. The mechanism engages easily in this position.
    NOTE: The Bowden cables are identical for RHD and LHD vehicles, although they are fastened to the air flap operating mechanism with the reverse side of their connectors.
    Install the components in reverse order.
  1. Check operation of the Bowden cables.

Mar 17, 2009 | 2003 Ford Focus

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