Question about 2001 GMC Safari

1 Answer

The knob that turns the heater from front to AC to

The knob that turns the heater from A/C to windshield to upper vents etc doesnt do anything. i know it is vacuum activated but where should i begin to diagnose

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 87 Answers

The cable is probably dislocated from the knob or at the blend door actuator.The cable may also be seized.

Posted on Jul 28, 2009

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:

1 Answer

How do I confirm a blend door / actuator problem?


blend door concerns heat and cold air ducting flapper. whether electronic or manual truning of a knob there is a movement noise. a motor/s make/s a sound on electronic controlled ones or a turn knob harder at times to turn does this. then feel the changes hot/cold breeze and no breeze etc..on the vent according to what you turn the system on to do. it is best to confirm movement /motion of the internal motor or flapper during night time or early morning in the garage inside the car devoid of noise to hear the motor or flapping movement, must hear some motor effort or feel hand effort if cable to the heater valve is intact/ not snapped to open heater valves on the engine side. then inspect heater cable if heater is not working etc..hope this helps.

Nov 24, 2014 | 1999 Mercury Grand Marquis

1 Answer

What is the problem with my mode selection knob?


HAVC Blend Door problem under the dash

Oct 03, 2014 | 2003 Kia Sorento

1 Answer

Air blend door actuator


Possible bad blend door actuator .some gm cars can be relearned to the new climate control head

Jul 28, 2013 | 2001 Oldsmobile Aurora

1 Answer

Recently, on a cool rainy morning I turned my heater to defrost in order to clear my windshield. Later that day as the temperature rose, I tried to use my AC, but my vents stayed stuck on defrost, and...


olandchavaz, What you need to do is check in the engine compartment for a vacuum line coming through the firewall. This engine vacuum is what controls the actuators. A small piece of rubber hose will correct the problem should you find a broken line. Good luck with this.l

Jun 04, 2011 | GMC Sierra 1500 Cars & Trucks

2 Answers

AC/Heater control valve :Lancer 2003 Misubishi


The sliding switch on the console is stuck in the cold position and the knob is pulled off. Use pliers to jiggle the switch as best you can. Feel under the center console and you probably will find the cable that is hooked up to the flapper. You'll know because when you jiggle the cold/heater switch at the upper console, the cable will move slightly. At the hookup of the cable to the flapper down under the console (passenger side) try to work the flapper loose to the open (or close) position. At the same time work the sliding switch (with pliers). The flapper will come loose and function properly. Try not to knock of the AC button like I did in the process. It flew off some where under the passenger seat. I'll find it sometime before summer. Ha.

Apr 21, 2010 | 2003 Mitsubishi Lancer

1 Answer

Heater/AC vent option knob produces knocking sound in back right corner. i.e. the knob rotates from vents in front to half front half floor to all floor to half floor half defrost to all defrost. the...


If I am reading correctly you are hearing the vent doors moving to redirect the airflow to the vents you choose. This is normal and can be more noticeable if the blower fan is on, putting air pressure against the doors.

Jan 09, 2010 | 2003 Chevrolet TrailBlazer

2 Answers

When put my selector to windshield my ac turning on automatically


are you referring to the windshield defroster? if so, then it is normal for the ac compressor to cycle on and off, the reason being that, during winter months, is helpful for the proper function of the ac compressor to cycle on and off so as to not lock up.

Sep 24, 2008 | 2002 Honda CR-V

Not finding what you are looking for?
2001 GMC Safari Logo

Related Topics:

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75077 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

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

Answer questions

Manuals & User Guides

Loading...