Question about GMC Envoy

1 Answer

Resistor how do I replace the heater/air conditioner resistor

Posted by on

Ad

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
  • 3,287 Answers

Autozone sells the replacement if you need one for about $28. It is a Duralast #DR755 (link provided at the bottom) and is for the manual speed control, not the climate control or automatic types, though the procedure *may* be similar.

I did this job myself in less than 30 minutes with a flashlight and a few simple hand tools. You might have to get into a slightly awkward position to see & remove / reinstall the screws that hold the resistor pack in place under the dashboard however.

1) Remove the two screws from the plastic cover under the glove box & disconnect / remove electrical connectors secured to the cover. Set the cover aside.

2) Empty the glove box of the contents.

3) With the glove box open, push the clip on rear of the left side of the glove box out of the way to allow it to fall forward.

4) Remove the electrical connector from the blower motor located to the right of the glove box opening.

5) Pull the connector and cable downward tot he floor. There is a thick rubber band that may be holding the cable - pull it away to slide the cable out easily.

6) Close the glove box.

7) Look upward - close to the firewall to follow the cable removed in a previous step (a flashlight can help out here). It enters a plastic plate held in place with two screws. There is also a narrow electrical connector on this plastic part.

8) Disconnect the narrow electric connector by pulling it straight downward.

9) Remove the two screws that hold the plastic part in place.

10) Allow the part to fall / gently pry away from surface.

11) Reinstall in reverse order.

The link for the $28 Duralast #DR755 replacement mentioned above:

http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?categoryDisplayName=Climate+Control&fromType=parts&fromString=search&parentId=52-0&currentPage=1&filterByKeyWord=dr755&isSearchByPartNumber=true&navValue=15201160&categoryNValue=15299999&fromWhere=&itemId=1160-0&displayName=Blower+Motor+Resistor&searchText=dr755


I hope this helps!

Posted on Nov 04, 2009

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

Heater / air conditioner fan control doesn't engage fan. Previously, it only worked in high speed.


I would replace the blower motor resistor first then see if that corrects this. The resistor is located next to the blower motor under the dash.

Jul 16, 2012 | Cars & Trucks

2 Answers

Heater/ac fan only works on high


Hello, pretty easy fix for this. replace the blower resistor assembly mounted under the passenger side of dash the resistor is held in place with 5.5 mm screws

Dec 02, 2011 | 2005 Chevrolet Colorado

1 Answer

The heater and air conditioner in my 1992 Daihatsu charade are not working. Can you assist please?


Do you mean the fan motor???? See if it will work on "high" speed only. If yes, replace the heater motor resistor. Otherwise you may have a bad heater motor.

Apr 27, 2011 | 1992 Daihatsu Charade

1 Answer

My fan only works on high using both the heater and air conditioner. What's the problem?


It sounds like your blower motor resistor is bad, or the wiring plug to the resistor has deformed from heat. Go to the autozone.com site and become a member. they have a great how-to tutorial on replacement of the blower motor resistor

Nov 12, 2010 | 2005 Jeep Grand Cherokee

2 Answers

The air conditioning does not blow through front vents but through windshield vents, what is the problem?


This is a common problem on all Astro/Safari vans. The problem is a leak in the vaccum lines that control the vaccum switch responsible for changing air direction from the defrosters, dash vents, floor vents..etc.
Many of the problems that plaque the Astro/Sarfari vans and many other "Mini-Vans" is the build up of excess heat in the engine compartment. It\'s a tight place to put a V6-4.3 Vortec engine and the heat generated bounces back and cooks everything on the engine (coils, modules, sensors, wiring, and of course plastic vaccum hoses). No need to mess with your switches or anything behind the dash -- replace those thin plastic vaccum hoses to operate the vaccum switch (located just below the A/C canisters, to the right of the heater/ac blower housing) and your dash switches will magically send heated or cooled air where you want it.

Oct 25, 2010 | 2003 GMC Safari

1 Answer

1995 Escort: when i turn on the heater or air conditioner the f...


Check the wire connections at the blower motor and fan resistor, they are located under dash on passenger side. They sometimes have corrosion that burns the plastic connector. The resistor is responsible for all fan speeds below high. Hope this helps, let me know.

May 17, 2010 | 1995 Ford Escort

1 Answer

My 2001 Ford Focus' heater/air dial has stopped working. The heater will only turn on "4" and the air conditioner will not come on. What is the problem?


Sounds like a burned resistor for your fan speed. 2- 8mm screws removes resistor check to insure coils are not broke.

Apr 29, 2010 | 2001 Ford Focus

2 Answers

Car battery was drained and nothing was left on and Replaced FSU


I suggest you to bring you car to BMW service center to have proper investigation.

Jan 23, 2010 | 2005 BMW X5

3 Answers

2004 Colorado Air Conditioner/Heater Blows on Full Power Only


replace the blower motor speed control resistor, it is the only thing that will cause this.

Jan 17, 2009 | 2004 Chevrolet Colorado

1 Answer

Heater air conditioner wont work


Yes this would be the speed control resistor/module

Jan 16, 2009 | 2002 Dodge Durango

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

292 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides

Loading...