so the sts-v gets a diff cooler why cant we
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, so the sts-v gets a diff cooler why cant we in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; SO it was found that the sts-v's big ass 469 engine tends to overheat the the Diff, so GM made ...
  1. #1
    Kael's Avatar
    Kael is offline Cadillac Owners Connoisseur
    Automobile(s): The Mighty Kael, 2004 Black CTS, Every Option
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    so the sts-v gets a diff cooler why cant we

    SO it was found that the sts-v's big ass 469 engine tends to overheat the the Diff, so GM made a dealer installed upgrade for it.
    Why cant we have something like this? or.. perhaps this might help the V guys.. hmmmm
    check this out:

    Differential Cooler

    figure 1


    figure 2

    This month (April 2006) a differential cooler assembly is available for the Cadillac STS-V (fig. 1). The part number is 15868857.



    The system is designed to reduce the operating temperature of the rear differential fluid when the STS-V is driven at extended high speed or in competitive driving. The STS-V comes with control logic to operate the system when high heat generation conditions are met. The wiring harness has provisions for the cooler, making it an easy installation. Installation time is less than 2 hours.

    The differential lubricant pump and cooler assembly is located under the vehicle and is mounted to the rear storage compartment well (fig. 2). The cooler module assembly consists of a pump, a heat exchanger, an electric fan and assorted hoses/fittings. All components except the external lines and fittings are located in the Cooler Module.



    Oil is pulled from the differential and pumped through a hose to the cooler/heat exchanger. The differential oil is cooled by dissipating heat as the 12 volt electric fan blows outside air over the heat exchanger. The cooled differential oil then returns to the differential.

    TIP: The pump and electric fan can be turned on using the Tech 2 or suitable scan tool.

    The differential cooler system has a maintenance feature that operates the system for approximately 15 seconds under certain conditions during initial vehicle operation. It is normal to hear the system run during this maintenance cycle.

    If the vehicle is equipped with this system, rear differential fluid capacity is an additional
    0.31 L (0.23 qt).

    - Thanks to Darren Bohne and Tobin Davis

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  3. #2
    mocts is offline Cadillac Owners Fanatic
    Automobile(s): CTS 3.6 SOLD!Now SAAB 9-3(me), CTS Wagon(mom), STS 3.6(dad)
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    Re: so the sts-v gets a diff cooler why cant we

    is the cts' problem for the differential also related to overheating?

  4. #3
    Flyin-Ryan's Avatar
    Flyin-Ryan is offline Cadillac Owners Connoisseur
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    Re: so the sts-v gets a diff cooler why cant we

    Wow I cant believe it is an electric part. I figured it would be like any old Oil/tranny cooler

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