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...
Forum Discussion
We had a 2008 GMC Yukon XL Denali, it did get warm towing the 7k travel trailer. Once the transmission gets up to engine temp, they both climb together. We posted on this forum back then and one of the members had emailed factory and gotten a response.
My own research agrees. We traded to 2011 GMC 2500HD and heavier trailer, but if we were keeping the Denali, I was going to put after market trans cooler on.
This is the response they got.
I was also concerned at one pointhowever and contacted GM with the question. There answer was: Good Morning! Thank you for giving me the time to do some research on your concern with the transmission temperature. I have consulted one of our dealers and am happy to inform you that I have the information you’ve requested. The normal operating temperature is between 160°F to 200°F (71°C to 93°C). For towing, the normal operating temperature is between 235°F (113°C) to 260°F (127°C).
My own research agrees. We traded to 2011 GMC 2500HD and heavier trailer, but if we were keeping the Denali, I was going to put after market trans cooler on.
This is the response they got.
I was also concerned at one pointhowever and contacted GM with the question. There answer was: Good Morning! Thank you for giving me the time to do some research on your concern with the transmission temperature. I have consulted one of our dealers and am happy to inform you that I have the information you’ve requested. The normal operating temperature is between 160°F to 200°F (71°C to 93°C). For towing, the normal operating temperature is between 235°F (113°C) to 260°F (127°C).
