6L80E Rough Shift 1-2 and 2-1

[Doubeleive]

Ran the Tech-2 today on the highway and in town some to look at transmission pressures. Pressures are 109 psi as it switches on and off solenoids 2 through 5. The ones for the converter are about 13 for one and variable for another, more when the torque converter is unlocked and slipping.

Took two snapshots and uploaded them to the laptop. After Bible Study, we'll record and upload one to youtube.

Any of you Tech-2 guys with 6-speeds remember what your pressures are? @gooffeyguy @Doubeleive

I have not used the tech2 on the transmission yet myself

 

[swathdiver]

Ok, Here's a quick snapshot of my truck climbing out of a steep driveway onto the road and running through the gears until right before the converter locked up. You can see what the presssures are and how the solenoids turn on and off to move her through the gears.

About 21 seconds in, she's in 6th gear and now you can see the pressures of the Line PC and TCC solenoids as the converter locks and unlocks.

Hope this helps and it would be interesting if some of you Tech-2 guys could run a similar scan and see what your pressures are. At the time of this video, my truck has about 147K miles on its original transmission and 30K on the fluid which stands at 80% life.

If the video is ever lost, the 2-5 PC Solenoids were at 109 PSI, Line PC varied but was 11-13 PSI with the converter locked up and 70 PSI when slipping.

 

[gooffeyguy]

Ok, Here's a quick snapshot of my truck climbing out of a steep driveway onto the road and running through the gears until right before the converter locked up. You can see what the presssures are and how the solenoids turn on and off to move her through the gears.

About 21 seconds in, she's in 6th gear and now you can see the pressures of the Line PC and TCC solenoids as the converter locks and unlocks.

Hope this helps and it would be interesting if some of you Tech-2 guys could run a similar scan and see what your pressures are. At the time of this video, my truck has about 147K miles on its original transmission and 30K on the fluid which stands at 80% life.

If the video is ever lost, the 2-5 PC Solenoids were at 109 PSI, Line PC varied but was 11-13 PSI with the converter locked up and 70 PSI when slipping.

I'm not sure what my pressures are. I do know that I can change them with my Diablo i3 tuning device

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[swathdiver]

I'm not sure what my pressures are. I do know that I can change them with my Diablo i3 tuning device

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Well, next time your wife sends you to the store for milk, hook up the Tech-2 and run a quick scan! LOL

 

[gooffeyguy]

Well, next time your wife sends you to the store for milk, hook up the Tech-2 and run a quick scan! LOL

What's that info under, trans data?

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[swathdiver]

What's that info under, trans data?

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Yes, first menu on the Transmission Control Module.

 

[TahoeLT10]

Did you ever figure our rough shifting?

 

[BeauDuke45]

Not yet, been crazy busy with other stuff. Hoping to dive into it next weekend when the wife is out of town, but that’s the same weekend college football starts....


Sent from my iPhone using Tapatalk

 

[gooffeyguy]

Yes, first menu on the Transmission Control Module.

Did a 3-4 minute snapshot of the trans data just driving around the block. Only got up to about 35mph when I turned onto the main road from the subdivision.

I downloaded it into TIS2000 on my laptop. Guess I gotta get it posted on youtube and link it here.

In a nutshell, most of the solenoid pressures stayed at 109, but would start out less then ramp up real quickly.

 

[swathdiver]

Gonna try to get these readings this afternoon/evening. How do I data log with the Tech2? Do I just select which stuff I want to log and drive for a bit then download it to a pc with the TIS2000 software?

Once you are in the section that you want to view, you press the "more" button under the screen until "snapshot" comes up and use that to make a 2 minute recording. The computer can store two of these at a time. You can review on the Tech-2 or download to the TIS2000. I ignore the "trigger" stuff, don't really know how or why to use it yet.