Question about 1996 Chevrolet Blazer

1 Answer

1996 chevy truck A/C, Heater and defrost not working at all,Already changed the control selector.

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 1 Answer

Could be the blower motor, I have had and am continuing to have the same problem. Replacing the motor did help though.

Posted on May 15, 2009

  • norcal916 Sep 23, 2009

    Don't know if you still need help, but after I replaced my blower motor it stopped working again after about 3 month or so; turns out it was the wiring in my dash. Since I fixed the wiring; works fine! Probably shouldn't waste your time on parts with Blazers; it seems like the wiring is usually whats behind the problem. At least with my Blazer anyway.

×

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why wont my 2001 ford windstar blow out of vents ? only on defrost?


Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob , mounted on the heater function selector switch, which is part of the heater control .
  • The function selector knob has the following positions: OFF, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST.
  • The heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318) . Refer to the System Airflow Schematic and Vacuum Control Charts.
  • An internal single-pole electrical switch is also controlled by the selector. The switch controls the electrical supply to the heater blower motor switch (18578) .
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
  • You probably have a vacuum leak , Pull heater control panel an check for vacuum . A broke vacuum hose or The vacuum selector valve is bad ! Or check for a vacuum hose in the engine compartment being off somewhere !

Mar 08, 2015 | 2001 Ford Windstar

1 Answer

1997 Ford Taurus front defrost not working


. Air won't blow out of the floor or center vents just defrost ? Do you have manual or automatic climate control ?
Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob mounted on the A/C-heater function selector switch, which is part of the integrated control panel.
  • The function selector knob has the following positions: OFF, MAX A/C, A/C, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST. The A/C-heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318). Refer to the Vacuum Control Diagram , System Airflow Schematics and Vacuum Control Chart .
  • Two internal, single-pole electrical switches are also controlled by the A/C-heater function selector switch. The combination of these electrical switches controls the electrical supply to the A/C clutch and heater blower motor switch (18578).
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
  • Vacuum Control Motors The vacuum control motors (18A318):
    • are located on the A/C evaporator housing, A/C recirculation air duct and heater air plenum chamber (18471).
    • direct system airflow to the vehicle interior as determined by the remote climate control module or manual override.
    • The five-passenger seating configuration has an additional vacuum control motor mounted on the heater air plenum chamber to control airflow to the rear seat A/C register (19893).


vacuum control motor-i4bq0ig33y1522pr2d2rrkk3-2-0.gif

Jul 09, 2017 | Ford Cars & Trucks

2 Answers

1988 chevy sprint Heater defrost and floor heater works but face heater blows out cold air


this cars are not suppose to blow hot air to the face vents ,if you notice there is a blue arrow on the selector for face air

Dec 11, 2012 | Cars & Trucks

1 Answer

My heater in my car does'nt work, nor the defroster


You may have a bad cable. Look on the firewall toward the passenger side. There is a valve with 5/8 inch heater hose attached. Manually change the position of the valve. If you now have heat the problem is with the cable which runs from the valve to the dashboard temperature selector.

Dec 21, 2010 | 1996 Honda Accord

1 Answer

2001 blazer heater blows air from the dah only. when the selector is changed, the air doesn't flow to the floor or defroster. Temp control does work.


sounds like the air selector cable came of the door on heater box ,can't remember if there is a cable or a motor,they do the same thing.You need to check the door operation on the heater box

Nov 19, 2010 | 2001 Chevrolet Blazer

1 Answer

No matter where I set the control on my 96 Explorer, all I get is defrost. Any Suggestions?


The truck needs a new MODE switch or call it a selector switch instead for the heater control unit

Nov 14, 2010 | 1996 Ford Explorer

2 Answers

Heater will not change from defrost, and is not


The 4X4 vacuum switch has gone bad and needs to be replaced, you can pick that switch up at Auto Zone or Parts Source for around $25.00 and the dealer for $65.00. Auto Zone can give you the step by step instructions to replacing it with common tools. It's located on the top of the Transfer Case drivers side, disconnect the three vacuum line clip from it and unscrew the vacuum switch with an 1 inch open end wrench. It's going to be a tight fit to get the wrench there, but can be done. I have a spare switch in my glove box, been there done that more then once. Once new switch installed, clip the vacuum lines back in and your good as new. As for the Defroster vent, it is the switch it self on the dash which works like a vacuum line valve to the different settings like defrost, vent or floor and at worst it's going to be the actuator vent door. But most of the time it's going to the the switch it self on the dash and you can pick that up at the parts store mentioned above or the salvage yard if you would like to practice on a salvage yard car first before you take yours apart. It take about 15 min to replace the switch from the dash from start to finish which is much faster then the 4X4 vacuum switch under the truck. Good luck and be safe.

Dec 14, 2009 | 1996 Chevrolet Blazer

1 Answer

Where is the air door actuator? The air flow will not switch from the floor to the defrost. 1995 Chevy Beretta Z26 3.1


The Heater/Defrost actuator is located on the right side of the HVAC housing under the right side of the dash. It is vacuum operated.

90% of the time, when the mode doors do not work it is because the vacuum line in the engine compartment is broken or disconnected. The second most likely cause of the problem is a leaking vacuum selector switch located within the control head assembly. (This switch is available by itself, you don't have to replace the entire control head.)

Failure of the actuators themselves is possible, but rare.

Oct 22, 2009 | 1996 Chevrolet Cavalier

2 Answers

Heater control 98 chevy s10 blazer


These trucks have a problem where moisture builds up in the heater box then freezes. When this freezes and you change your heater settings it breaks the shaft for the blend door. If this is what happened you should be able to look under the dash above and to the right of the gas pedal and you will see two vaccuum accuators one of them you should be able to wiggle around the linkage if it is broke. To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate.

Dec 13, 2008 | 1996 Chevrolet Blazer

Not finding what you are looking for?
1996 Chevrolet Blazer Logo

1,025 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides

Loading...