Recent content by Klewis

  1. Klewis

    High Temps 2011 Yukon XL Denali

    UPDATE Tru-cool Max installed. Took awhile to get the bracket kit I purchased figured out. The pre-drilled holes were off and had to re-drill one. But looks great!! Hoping no leaks in the line . When drilling the hole on the bracket I pushed too hard and popped through the metal and into the...
  2. Klewis

    New to me 2011 Yukon Denali

    I’ve been looking around online to find reviews on Cold-Case Radiators. They look good but some reviews indicate that fan shroud won’t fit back on without modification. Close to pulling the trigger on one
  3. Klewis

    New to me 2011 Yukon Denali

    Agreed. I have 2011 Denali XL with the 6.2 liter and going uphill for long stretches even without a trailer my engine temps are above 210 but never more then 235. When towing it won’t get above 235 on the hills. It freaked me out at first. Just got back from Yosemite and my trans temp hit 241...
  4. Klewis

    High Temps 2011 Yukon XL Denali

    Update: I purchased a used K5L 700w cooling fan from eBay. When it arrived I couldn’t tell by looking at it that it was different from my current fan. Oddly enough the fan that was on my Yukon Denali was a Bosch fan. I’m guessing it was an after market addition. The 700w fan is two 5 blade...
  5. Klewis

    High Temps 2011 Yukon XL Denali

    I have 1/2 inch lines running to top of radiator on drivers side. I was reading temps from gauge in Denali so probably not super accurate. I think I need to upgrade to a 2 or 3 core radiator and a bigger trans cooler. I have the dual electric fans.
  6. Klewis

    Yukon Denali 6.2 towing Travel Trailer

    What radiator and transmission cooler did you install on your Denali? I have same year Denali and wanted to make same improvements.
  7. Klewis

    High Temps 2011 Yukon XL Denali

    The 235 is the engine coolant. I tow a trailer to San Diego that weighs about 6000-7000 lbs and my Denali hits 235 on freeway with slightest uphill grade. I’ve read on this forum that the engine runs hot and that is normal but it always freaks me out . I’m not sure what the Denali weighs fully...
  8. Klewis

    High Temps 2011 Yukon XL Denali

    What is best way to lower engine temp while driving or towing in hot Arizona conditions? Should I install a bigger transmission cooler in place of stock cooler? I’m trying to avoid hitting 235 degrees while towing. Any advice?

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