Transmission loss. 2011 Yukon

[Enoob]

Wondering if i can get any thoughts as to the best place to start on a Yukon that appears to have a transmission issue. Most recently, it just loss the ability to move after coming to a stop. It seemed to want to move slightly, but it was apparent that it was not going anywhere (RPM's go up, but barely any power/movement). No reverse or low gear. Fluid appears fine and has about 120k. The only other issue I have noticed is what seems to be a loss of power when it goes into a passing gear. When that happens, it would kick into gear, RPM's go up, but seems to not really engage into the gear very quickly, but rather a slow engagement. That's about the best way I can describe it. Going to a Tranny shop where they are stating that these tranny's are known for issues and he is suspecting a replacement will be likely. Looking at $4200 for GM Re-certified. They will scan it first, but wondering if this is the typical cost on a rebuilt. I see that pressure is a thing to also check. I hear there are like 3 revisions i that year range due to changes. Last of VIN are BR320355. Any thoughts appreciated. Thank you. - sry, not sure how to move it to the right thread!

 

[swathdiver]

Howdy Steve,

It could be something as simple as a bad or restricted filter, filter seal or pump seal. The troubleshooting guide says it could also be the turbine shaft thrust bearing assembly, input carrier assembly, sun gear parts, output carrier thrust bearing assembly, output carrier assembly, 4-5-6 clutch assembly.

Gotta get it hooked up to a Tech2 and see what's going on inside and if any codes have been thrown.

 

[fasttruck9]

Wondering if i can get any thoughts as to the best place to start on a Yukon that appears to have a transmission issue. Most recently, it just loss the ability to move after coming to a stop. It seemed to want to move slightly, but it was apparent that it was not going anywhere (RPM's go up, but barely any power/movement). No reverse or low gear. Fluid appears fine and has about 120k. The only other issue I have noticed is what seems to be a loss of power when it goes into a passing gear. When that happens, it would kick into gear, RPM's go up, but seems to not really engage into the gear very quickly, but rather a slow engagement. That's about the best way I can describe it. Going to a Tranny shop where they are stating that these tranny's are known for issues and he is suspecting a replacement will be likely. Looking at $4200 for GM Re-certified. They will scan it first, but wondering if this is the typical cost on a rebuilt. I see that pressure is a thing to also check. I hear there are like 3 revisions i that year range due to changes. Last of VIN are BR320355. Any thoughts appreciated. Thank you. - sry, not sure how to move it to the right thread!

My 12 hoe with 124,000 stopped moving forward after a stop while on vacation in Delaware of May of 17 3 months out of warranty, long story short $3900.00 Chevy installed a re manufactured trans. Seven months later and 6500 miles Chevy installed the second reman. trans. this one under under warranty. The trouble is they had the hoe for six weeks just to change a trans! Good luck

 

[Meccanoble]

jeez. I'm not looking forward to the day but trying to prepare for it. I was hearing the next gen tranny is even better but not sure what is involved to get it installed. I imagine a used one from junkyard would be cheaper. Still investigating the process.

 

[dnt1010]

I hope you can get something figured out but in the past those type of symptoms have always led to a full replacement transmission for me. I recently bought a Hybrid Tahoe with the Allison design 2ML70. From what i understand these things are horribly expensive to replace. I have no problems so far on this one with 200k miles "knock on wood" I am contemplating changing fluid but I cannot figure out if the fluid has ever been changed, so I am in standby mode for now. At the suggestion of a forum member I am going to do a paper towel test on the dipstick fluid to see if I can determine if it is fairly fresh or old and dirty.
How does your fluid look when compared to new fluid?
My plan is to put some fluid from the dipstick on a paper towel and then pour some new fluid next to it. Not very scientific but if it looks pretty good I am going to proceed with doing a preventive maintenance fluid change. If really dirty or burnt smelling I will do nothing for now except to start sourcing a new trans and hope to find a great deal on a quality reman unit. From what i understand if it has never been changed new fluid equals instantaneous death at 200k miles.

 

[Doubeleive]

a good transmission shop will rebuild one right and give you a 3 year warranty or more for probably just under what a oem rebuilt would cost with a 1 year warranty.
a online dealer such as powertrain products offers a "no fault nationwide warranty" that includes parts and labor, I think the no fault warranty is a slight extra charge but more than worth every penny in a gamble.
the only time I have seen a dealer take more than a few days to replace a transmission is if they are dealing with a 3rd party warranty company in which case a inspection has to be performed and haggling on parts and labor which can take lots of extra time.

 

[Enoob]

Followup - I did go with a GM reman. As it goes, I had yet another issue recently with it, just before the 3year warranty was up. I had only put on about 50k when it started slipping and making noise. Found out after they dropped it, that the pump failed leading to catastrophic failure. GM replaced it with another reman with no fuss. All two weeks shy of the warranty expiring and they had it back to me in less than ten days. I am hoping for better results this time.