islandhopper00
TYF Newbie
- Joined
- Aug 12, 2024
- Posts
- 12
- Reaction score
- 13
This is interesting to hear. Maybe I just need to adjust my thinking. My camper weighs about 6000lbs.
2009 Yukon Denali worth
- Thread starter islandhopper00
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Here's a link to my research saga, in case you're interested. https://www.tahoeyukonforum.com/thr...towing-in-the-summer-heat.125753/post-1562470
And on the transmission fluid temps, here's what GM has to say:
In the February 2011 issue of Trailer Life magazine RV Clinic in response to a reader about the maximum transmission temperature allowed in a 2009 Chevy Silverado, the Tech Team had this response.
“General Motors’ in-house towing team expert provided RV Clinic with this statement: The maximum allowable automatic transmission fluid temperature is dictated by the transmission oil itself. The oil begins to degrade significantly above 270 degrees Fahrenheit, so we design vehicles so that in all but the most extreme conditions, the fluid temperature in the transmission sump stays below 270 degrees F.
We allow for up to 285 degrees F in extreme conditions (i.e. towing a trailer with combination loaded at GCWR in Death Valley). But for customer usage anywhere else in the country, even at GCWR, transmission sump temperature should stay well below 270 degrees F. Above this point, certain internal components, such as seals, begin to disintegrate rather quickly. Although newer synthetic fluids can withstand higher temperatures we still recommend this (270F) as a maximum temperature."
-----------
And finally, some wisdom from another member here several years ago who also towed a heavy camper with his Tahoe:
"The weak link in an automatic transmission is the fluid. All of the other components can handle the elevated temperatures. As I mentioned earlier, Dexron VI starts to degrade severely at 270°. So I was not concerned that the transmission was running at 230°. I confirmed this with a close friend, who is a transmission engineer at GM. I respect and trust his opinion.
Aftermarket coolers are discussed frequently, but the bottom line is that they're unnecessary, particularly with Dexron VI transmissions. The manufacturers test their vehicles under "worst case" conditions. You can go to Arizona, Death Valley or Pikes Peak, and you will surely see some test mules loaded up with instruments and sensors.
As an aside, I've been in the seal business for over 20 years. About a third of my business is to Tier 1 automotive suppliers, including transmission manufacturers. I call on companies like ZF, Aisin, and Master Automatic. It's my job to know how my products, and rubbers and plastics in general, are affected by elevated temperatures."
you do not need to cut anything, you can make it 100% plug-n-play with the right connectors, won't leak a drop either
you just need 2 of each of these, you might finder lower prices for the adapter by shopping around as these prices are from a few years ago, just be sure they are the Exact same size.
the top pic is amazon and lower pic is from ebay and the an line guy still sells them same price i think, those an lines are good for like 6000psi or soemthing like that lol. nowhere near the psi of a cooler which is around 20psi max
and the sole factor that makes a older vehicle like ours have much value at all beyond normal price is super low miles, nothing else, not upgrades, not anything really
good maintenance records might help move it along....at normal used car value. That and not trying to dump a heap of problems on the buyer by selling a beat up pos
good maintenance records might help move it along....at normal used car value. That and not trying to dump a heap of problems on the buyer by selling a beat up pos
swathdiver
Full Access Member
The L9H in the 2009 Denali does indeed have VVT unless someone removed it. A RWD Denali has the 9.5" 14-bolt semi-floater rear axle.
If you want to tow with that short wheelbase rig, change the fluid often. Transmission coolers don't last forever and neither do the lines, they get clogged up over time and require replacement. GM had so many transmissions failing due to reduced flow from the coolers that they began to test for it when servicing the transmissions back then.
If you want to tow with that short wheelbase rig, change the fluid often. Transmission coolers don't last forever and neither do the lines, they get clogged up over time and require replacement. GM had so many transmissions failing due to reduced flow from the coolers that they began to test for it when servicing the transmissions back then.
islandhopper00
TYF Newbie
- Joined
- Aug 12, 2024
- Posts
- 12
- Reaction score
- 13
islandhopper00
TYF Newbie
- Joined
- Aug 12, 2024
- Posts
- 12
- Reaction score
- 13
I took the 22's off and put these 20's on because I like them better, and I like more sidewall. I'm old I guess. lol
islandhopper00
TYF Newbie
- Joined
- Aug 12, 2024
- Posts
- 12
- Reaction score
- 13
Is there any sign that vvt activates? I don't feel it, I don't hear it, and theres nothing that tells me it has vvt.
islandhopper00
TYF Newbie
- Joined
- Aug 12, 2024
- Posts
- 12
- Reaction score
- 13
I had a 2001 Yukon
The inly concern I had was the trans temps. But y'all calmed me down about that.
So it's change the trans fluid more often if I tow often. I will do that.
I had a 2001 Yukon 4wd with 5.3 and 4:10 gears. It was special ordered from the factory like that. I towed my camper a lot of miles with that truck. This Yukon tows very similar except it has considerably more power. The suspension is kinda soft but my weight distribution hitch does a good job of stiffening the rear suspension up.
The inly concern I had was the trans temps. But y'all calmed me down about that.
So it's change the trans fluid more often if I tow often. I will do that.
Similar threads
