Search results

  1. E

    Towing with a 5.3 Tahoe

    If I were you, I would look for a good sized transmission cooler. If yours comes with one, take a look at it. It’s probably one of the tiny ones. Add another one, other wise your transmission will get too hot and be no good. I had a Yukon Denali with the 6.2, but when I looked at the...
  2. E

    1992 Yukon..Need a/c help

    I have. 93 Silverado that I had an issue with as well but found what the issue was. On he high side of the compressor, if you compare it, you might find that it's slightly lower than the low(suction) side. After three compressors, I took the compressor in and showed him and compared it to the...
  3. E

    Yukon Denali 6.2 towing Travel Trailer

    I have a 30ft TT, but I have installed a thee core radiator and a bigger transmission cooler on my 2011, AWD Yukon XL Denali. I only tow once to twice a year, from Central Texas to Arizona. First time I towed, I towed about two hours to a lake and I didn't like the temps. Transmission jumped to...
  4. E

    Improve Transmission Longevity

    I was told by a owner of a mom and pops shop to keep it cool and do t hot rod it. I've installed an additional cooler and run about 135 winter and 145 summer .
  5. E

    Engine Failure 170k Timing Jumped Bent Pushrods Collapsed Lifters

    I had a similar situation as you in June. About 20mins from home, noise started coming from the right side of my 11 Yukon Denali. Wife asked if I hear it too, pulled over and I could hear knocking.....drove home, at 20mph got it ready to tow back to dealer. Luckily I have lifetime...
  6. E

    How hot is your transmission with an aftermarket cooler?

    When I first used my Yukon XL Denali to haul a 30ft about an hour from where I live, transmission jumped to 230-35 and engine jumped to 225...I didn't like it....I called GM and told me it was normal temp, especially for a AWD. I called dealership and talked to the shop manager and he told me...
  7. E

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    Guess what??!! Getting my engine replaced....... While driving back from Seguin to Killeen, TX about 10min for house started hearing a tapping sound. Towed it in to dealer today and they call me that engine needs to be replaced. I had taken a video and showed them, before they took it in...
  8. E

    Overheating towing with Denali 6.2L - Losing my F'n mind!!

    I didn't have the shut off, but the engine and transmission temps jumped to 225 and 230. I bought a three core radiator. I kept the same temp thermostat and added an additional transmission cooler. Now my normal temot in town are 150 and on the road , about 165
  9. E

    Replace Transmission Cooler with TruCool 40k

    Damn....looks like mine when I hauled my TT two hours. The transmission temp was at 231 and the engine temp at 225. GM of course told me that it was normal temp for AWD Denali, so I called the GM shop I bought it from, asked about an additional transmission cooler voiding lifetime drive train...
  10. E

    Optimal Speed with 6.2 Liter Engine for Towing

    I have the 11 AWD Denali, I added an extra tranny cooler and also added a Griffin three core radiator to help keep it cooler in the middle of the Centex heat and would suggest you do so as well. I do not go above 65mph, even on flat roads when hauling my 30ft trlr and try to keep the rmp's below...
  11. E

    Do I really need a new engine?

    I had an episode similar to yours when I first bought my 11 Yukon denali . Came to a stop light and as it turned green and I accelerated, it started sputtering and the stability nad all those lights came on. Pulled over, shut truck off, restarted and it went away, took to dealer since I handnt...
  12. E

    2007 Suburban Towing

    Buy a three core radiator, external transmission cooler and 3/8 hose and on the exit of radiator, usually the bottom add that hose and cooler then plug the return to the line. Did it with my 11 Denali and temps stay at 210, running temp, never going up. I have a 30ft and that's what made me go...
  13. E

    Transmission problems!

    I put an extra cooler on mine on top of the factory mounted cooler, plus upgrade radiator to a Griffin three core and no high temps at all! Even when I hauled in 97degree AZ weather. I kept the factory thermostat to avoid false check engine light, if I moved to a cooler thermostat. I'll...
  14. E

    Aux Transmission Cooler

    After hauling a car from Central Texas to AZ, engine temp did not move at from the normal running temperature after adding a Griffin three core radiator. Looked at tranny fluid yesterday and still cherry red as if new fluid was added! Adding an additional transmission fluid cooler and three core...
  15. E

    Aux Transmission Cooler

    I have a 11 Denali as well, AWD, my temps jumped to 228 transmission and 230 motor...I was worried. GM told me it was normal, but to be safe I got an additional transmission cooler and put in right in with the one on the Denali. I hauled my 30ft travel trailer from Central Texas to AZ and with...
  16. E

    2011 Yukon XL Denali 6.2L cooling trouble while towing

    I was also concerned about overheating while towing a 30ft travel trailer with my 11 Denali, 6.2l. Temp shot up to 230 on tranny with standard equipment I added an additional tranny oil cooler and tranny temp didn't go above 201 while going up hill, but my temp ranged from normal of 210 to 230...

Forum statistics

Threads
128,781
Posts
1,805,301
Members
91,760
Latest member
MyCleftNut

Latest posts

Top