ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Chevrolet Equinox a/c does not work

Updated on September 5, 2010

Chevrolet Equinox a/c compressor does not work

"The A/C compressor on my Chevy Equinox is not working" Was the greeting I received when I arrived at my automotive repair shop this morning. I love a challenge, so I was eager to get the Equinox into the shop and up on a rack. A/C and A/C compressor problems can be some of the hardest automotive problems to diagnose. I rank them right up there with electrical problems, and all automotive techs know how hard running down a crimped or broken wire can be. Getting back to the Chevy Equinox A/C issue, this was the original customer complaint:

VEHICLE:  2005 Chevrolet Equinox LT 3.4L, V6, MFI, OHV, VIN F, Eng Desg -

MILEAGE:  75000

Customer Concern: The A/C compressor shuts off and the A/C light goes out when the blower motor is set to speed 3 or 4. It works normally in 1 and 2. The blower motor works normally on all speeds.

Ahhh, a beginning. We are going to start with some pretty basic tests to see if we can find an obvious problem with any electrical issues.


1. Start the engine.

2. Set the blower speed to 3.

3. Backprobe the Yellow wire in terminal 13, in the 24 terminal connector at the control head, and ground it. If the A/C light does not come on, and there are no loose terminals, the Heat Vent Air Conditioning (HVAC) control head is defective.

4. If the A/C light did come on, disconnect the blower motor resistor card.

5. Test the resistance between terminals B and D. There should be 4 ohms or less.

6. If not, the blower motor resistor is defective.

In this case, our Ohms were off the charts. And this is what we determined to be a potential cause.

Potential Causes: Blower Motor Resistor

Heater Ventilation Air Conditioner (HVAC) Control Head

After a few further tests on the Chevy Equinox a/c control head we determined that it was indeed the blower motor resistor.

Confirmed Fix: Replaced Blower Motor Resistor

I have decided that I would like to share some of our confirmed fixes, and if anyone is interested, we would like to have yours also. for more great automotive tips and advice, please visit our website and forums to post your confirmed fixes. I hope this fix for the Chevrolet Equinox a/c problem was helpful. 


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)