GM Yukon XL Denali Transmission Temps
My main tow vehicle is my RAM CTD, but when we take the RV as well the truck has to pull my 7000 pound boat. So then we use my 2011 Yukon XL Denali to tow the Malibu. It has always run hot - both...
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"but couldn’t keep the tranny below even 240*. Again at the top, it was at 250"
I'd change the transmission fluid after a run like that. See:
https://www.bing.com/images/search?view=detailV2&id=92E13F6E0A8E2466FFB6196023AE0FE2D14FDCC0&thid=OIP.fq_fH_4y-DgYmpU8I6EhuAHaGT&mediaurl=http%3A%2F%2Fhome.earthlink.net%2F~jrshelton%2Fsitebuildercontent%2Fsitebuilderpictures%2Ftrans_failure_temp_chart.jpg&exph=506&expw=595&q=transmission+temperature+chart&selectedindex=1&ajaxhist=0&vt=0&eim=1,2,6
I'd change the transmission fluid after a run like that. See:
https://www.bing.com/images/search?view=detailV2&id=92E13F6E0A8E2466FFB6196023AE0FE2D14FDCC0&thid=OIP.fq_fH_4y-DgYmpU8I6EhuAHaGT&mediaurl=http%3A%2F%2Fhome.earthlink.net%2F~jrshelton%2Fsitebuildercontent%2Fsitebuilderpictures%2Ftrans_failure_temp_chart.jpg&exph=506&expw=595&q=transmission+temperature+chart&selectedindex=1&ajaxhist=0&vt=0&eim=1,2,6
