New Heated Washer Replacement AT-37GM
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2008-2013 Cadillac CTS General Discussion Discussion, New Heated Washer Replacement AT-37GM in Cadillac CTS Second Generation Forum - 2008-2013; I am curious if any 2008 owners have successfully replaced their OEM/disabled heated washer unit with the new one posted ...
  1. #1
    jghiller's Avatar
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    New Heated Washer Replacement AT-37GM

    I am curious if any 2008 owners have successfully replaced their OEM/disabled heated washer unit with the new one posted some time ago from AlphaTherm. I dont remember whether the AT-37GM could be installed once the recall work was performed or if you had to install it on a CTS that didnt have the recall performed. I do remember alot of concerns about the companies lack of response to customer inquiries. I see that the AT-380D unit marketed for other car makers seems to be popular and highly rated.
    I havent had my recall work done yet. My only use for the feature is for the summer low flying aircrafts common in South Carolina; I also live in NJ but usually dont spend the winters up here anymore.

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    928S is offline Cadillac Owners Connoisseur
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    Re: New Heated Washer Replacement AT-37GM

    jghiller,

    AlphaTherm was initially overwhelmed by demand for information and aftermarket product following GM's recall of 1,500,000 OEM units, but soon provided complete information and a detailed comparison of the new improved AT-37GM vs. the old recalled GM/OEM unit: http://alphathermusa.com/files/Compa...35_vs_AT37.pdf

    Here's what I did and now recommend that others do before taking their CTS in for recall service: http://www.cadillacforums.com/forums...ml#post2364218. After reading instructions (w/ photos) included with the AlphaTherm product and watching their website video demo, my installation was completed in a few minutes - no tools required.

    FWIW, I'm using Rain-X washer fluid and could not be happier with the performance of my new AT-37GM heated washer fluid system.

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    Re: New Heated Washer Replacement AT-37GM

    I did mine too. What 928S said. Easy replace, no problems, works great and you still get to pocket @ $30 when all is said and done. There was an earlier thread that had a coupon code for an additional 10% or something off...I don't recall what it was off hand.

    PS: I thought Alphatherm actually responded rather quickly after the recall.

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    Re: New Heated Washer Replacement AT-37GM



    I'll endorse the AlphaTherm replacement unit also. Easy installation. As 928S says, keep the fuse and bypass the heater before having the recall done.

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    Re: New Heated Washer Replacement AT-37GM

    928S/st4422,
    Thanks a lot for your info. After reviewing what GM does with the recall and what you did prior, I think I got the picture. Do the adapters to connect the tubing have a specific name? Not sure what size tubing I have. I ordered the Alphatherm unit so I could review the doc. I also watched the video and it appears getting the unit installed on the special bracket and attaching the wire connectors properly will be the most difficult for one as challenged as I am towards mechanical work.
    What did the dealers have to say when they saw the tubing change and fuse missing?
    I may have some questions as I move forward - if so I will send you an email if thats OK.
    Thanks again.
    jghiller

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    928S is offline Cadillac Owners Connoisseur
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    Re: New Heated Washer Replacement AT-37GM

    jghiller,

    First, I took my CTS to a local NAPA auto parts store and told the salesclerk "I need a little plastic gizmo to connect two windshield washer hoses." He came out to the parking lot to see for himself and determine the correct diameter which he didn't say and, sorry, I didn't ask. After connecting the two hoses, I tucked 'em away under the fender - out of sight and reach of my Cadillac dealer's clumsy hands...lol.

    Then, when I took my car in for the recall service, I told the Svc Advisor upfront that I had removed the 60-amp fuse and coupled the hoses to bypass the heater module. No problem, he wrote it all on the Work Order so that the Svc Tech would know to limit his job to removing the heater module and completing paperwork so that I could leave with $100 check in hand.

    When installing the AlphaTherm unit, the heater module bracket and electrical connections are literally a "snap." I predict that you'll have no problem.

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    Re: New Heated Washer Replacement AT-37GM

    Here is a photo of my installation from another thread that might be helpful.

    http://www.cadillacforums.com/forums...te-htd_wsw.jpg

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    Re: New Heated Washer Replacement AT-37GM

    Thanks - I saw your picture and figured I take it too and show NAPA. Is this connector only needed in the interim until the AlphaTherm is installed or still needed if the new tubing is different size or both? I assume AlphaTherm comes with all the connectors, etc you need unless there is a diameter difference.

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    928S is offline Cadillac Owners Connoisseur
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    Re: New Heated Washer Replacement AT-37GM

    jghiller,

    Yes, the hose connector is needed only in the interim. It will keep OEM hoses intact for a quick and easy AlphaTherm installation - i.e., remove temporary plastic connector and slide loose ends of OEM rubber hoses onto AlphaTherm heater module for a perfect fit, no complications.

    On the other hand...

    If you rely on discretion of your servicing Cadillac dealer, how will the Svc Tech choose to bypass OEM heater module and connect 2 plastic washer fluid tubes - 1 from reservoir, 1 to spray jets?

    GM recall bulletin says, "Disconnect the windshield wiper solvent inlet and outlet rubber hoses (Step 1) from the windshield washer solvent heater assembly and from the two plastic inlet and outlet windshield wiper solvent tubes...Use a portion of the rubber wiper solvent hose removed in Step 1 if needed to join the two plastic wiper solvent tubes together. Discard the remaining portions of the rubber windshield wiper solvent hoses."

    And, as noted by st4422 in other thread, "the supplied connectors from AlphaTherm were not compatible with the existing GM washer tubing so I had to substitute 1/4" to 1/8" adapters."

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    ranton is offline Cadillac Owners Fanatic
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    Re: New Heated Washer Replacement AT-37GM

    Is the hose coupler that you need to get from NAPA 1/4" or 1/8"?

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    Re: New Heated Washer Replacement AT-37GM

    Quote Originally Posted by 928S View Post
    jghiller,

    Yes, the hose connector is needed only in the interim. It will keep OEM hoses intact for a quick and easy AlphaTherm installation - i.e., remove temporary plastic connector and slide loose ends of OEM rubber hoses onto AlphaTherm heater module for a perfect fit, no complications.

    On the other hand...

    If you rely on discretion of your servicing Cadillac dealer, how will the Svc Tech choose to bypass OEM heater module and connect 2 plastic washer fluid tubes - 1 from reservoir, 1 to spray jets?

    GM recall bulletin says, "Disconnect the windshield wiper solvent inlet and outlet rubber hoses (Step 1) from the windshield washer solvent heater assembly and from the two plastic inlet and outlet windshield wiper solvent tubes...Use a portion of the rubber wiper solvent hose removed in Step 1 if needed to join the two plastic wiper solvent tubes together. Discard the remaining portions of the rubber windshield wiper solvent hoses."

    And, as noted by st4422 in other thread, "the supplied connectors from AlphaTherm were not compatible with the existing GM washer tubing so I had to substitute 1/4" to 1/8" adapters."
    I assume the tech will do as documented above and in the recall doc - is that what he did with your car?

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    Re: New Heated Washer Replacement AT-37GM

    OK - re-read your post from earlier - you essentially told tech to skip hose rework.

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    928S is offline Cadillac Owners Connoisseur
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    Re: New Heated Washer Replacement AT-37GM

    Quote Originally Posted by ranton View Post
    Is the hose coupler that you need to get from NAPA 1/4" or 1/8"?
    Okay, from NAPA I got a straight plastic coupler with approximate diameter of 1/8-inch inside and 1/4-inch outside (circumference of barbs); measurements eyeballed with a flat ruler, but should be close enough for use with flexible rubber hose.

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    928S is offline Cadillac Owners Connoisseur
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    Re: New Heated Washer Replacement AT-37GM

    CORRECTION: It's 1/4-inch outside diameter, not circumference, of barbs.

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    jhermit is offline Cadillac Owners Member
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    Re: New Heated Washer Replacement AT-37GM

    I tried to order the AT-37GM over the weekend with the 10% discount, but the promotion had expired. I emailed them and they responded this morning saying that they have reopened the promotion. Just use Promotion Code "web716" when ordering. I placed the order a few minutes ago and it worked. Not sure how long the promo will go.

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