This is my new favorite channel, David has the best sense of humor and actually goes in depth on what everything does. Currently building my name up by doing 60e builds, came here for info on other transmissions. Appreciate it buddy keep busting butt

Once again, This is for my escalade. You are right david, this trans is installed and finally got it running. Ran into a issue where after the install, truck had a no crank no start and no check engine light icon on dash issue. Finally after getting bad news, after news and alittle more bad news, my diagnostic guy said its the ecm. Picked up a used ecm from junk yard, installed it and programmed everything and truck is running great so far. For sure feel a huge difference. Some excellent high class work you did on this turkey.

@expressautotransmissiondav4207

2 жыл бұрын

Lol that's great to hear buddy. It definitely was a turkey but as always was fun to play with for sure. Thank you for your support Carlos

I enjoy your humor. Rebuilding mine now and your videos I am finding very helpful. Thanks

@expressautotransmissiondav4207

2 жыл бұрын

Absolutely glad to help

Another great video. Back in the old Th350, Th400, C6, 727 etc days I guess the pumps were so large that cross leaks and leaking valves were not a big issue. No one cared if it took 3- 4 hp to drive a large pump. So interesting the knowledge needed to overhaul a newer model transmission.

@expressautotransmissiondav4207

2 жыл бұрын

Thank you for that we are really enjoying making them and sharing as much knowledge as we can.

Another good video 👍

@expressautotransmissiondav4207

2 жыл бұрын

Thank you

Awesome

Excellent videos, thanks for sharing info. Do you have a preferred method of cleaning the valve body prior to vacuum testing? I've been using mineral spirits from the solvent machine but was considering trying an ultrasonic cleaner

I need to see this exact same video but in the 4L 60 E transmission and valve body vacuum readings. What’s acceptable and what’s not

Hey there. Really enjoyed this. How can I send mine in for a rebuild?

Hi, thank you for posting & sharing the vids 🤘. In the last couple of seconds you said you always get a ac delco tech, what do you mean by that? Thanks ahead cheers

@expressautotransmissiondav4207

2 жыл бұрын

I prefer to use a new ac Delco techm in all of my 6l80 transmissions

So are those two steel TransGo clutch select valves the only valves you add, in addition to the standard 6L80 Sonnax Zip Kit parts (and do you happen to have those TransGo part numbers)?

Hi, Just become your subscriber. couple of questions.. 1. if line pressure is holidng well for every gear as per the spec, can i assume valve body is good.. in otherwords i dont know how to isolate valve body (hydralic issue) vs mechanical issue when there is a slip on specific gear.. i assume if line presure is good valve body is good and i can condemn mechanical issue.. is my direction right.. 2. i also dont know how to isolate Torque coverter issue vs hydralic or mechanicl issue.. Much appreciate if you can help.

What else might cause me to have no forward gears but reverse works fine. I drove from California to texas no issues. Got to the apartment unloaded truck and drove 8 miles to Walmart. When returning from Walmart I was exiting the freeway and the transmission disengaged. I had no forward just reverse. Transmission temp was 190 degrees. Pulled the pan and no metal but fuss on the magnet. Fluid is dark but doesn’t smell burnt. I opened the filter and found a couple of slivers in it but very small. The balls look fine. But the valve forth from the left stuck a few times when I pushed it against its spring. Do you know what might be causing this and how do I fix it. Thank you for your time.

@terrencemcdonald7089

Жыл бұрын

Truck is a 2015 Silverado Z71 5.3L eng. I think the transmission is a 6L80

Hey buddy great videos. Got a question for you. I’m doing a 4bt Cummins swap into an 08 Escalade. I got it running and was getting 2,3 pressure switch codes, changed all 4 discs, new seal/filter between the techm and valve body and also split the valve body and made sure everything was clean in there. I pulled all the valves and cleaned the bores. Re assembled with a new spacer plate with all the balls back in where they go. Torqued the bolts to 71inlb cuz that’s the spec I found, new filter and fluid. Now no reverse. All gears but park are forward even neutral. Any suggestions? Thanks for your time.

@expressautotransmissiondav4207

Жыл бұрын

Check the manual valve and make sure it's hooked to the rooster comb

@screamindieselltd

Жыл бұрын

@@expressautotransmissiondav4207 I will check that tonight. Thanks for the reply!

@screamindieselltd

Жыл бұрын

@@expressautotransmissiondav4207 you hit the nail right on the head. I didn’t get the dowel in the slot on the manual valve. Thanks for your help!

@expressautotransmissiondav4207

Жыл бұрын

No prob at all.

i deal a lot with the 6L80, mostly the plastic check balls, no forward gears is a check ball that got stuck in the plate. i put metal or brown balls in them , the white ones wear out to fast

@expressautotransmissiondav4207

2 жыл бұрын

Agreed 100%

@kris9377

Жыл бұрын

Or the cracked piston in the main drum. I see that too

@expressautotransmissiondav4207

Жыл бұрын

Definitely a common one

Hey there, came across your channel by chance looking for advice from an expert and I'm so engrossed with your video's . I have a 2007 6L80E that won't drive even when shifter is in the drive position. No warning on dash cluster just won't go into Drive even when selected. Park, Reverse and Neutral are ok and this problem just occured suddenly, no previous problems with the trans and was serviced 30,000 kms ago. Would you have any suspicion as to what the issue could be ?

@MrMESC

Жыл бұрын

Vehicle has done 200,000 kms and has regular servicing

@expressautotransmissiondav4207

Жыл бұрын

No drive can be a check ball issue in the valve body or a broken piston in the 1234 drum or cracked weld in the 1234 drum. As well as some other things but as a sudden stop these are the areas I would look first.

@MrMESC

Жыл бұрын

@@expressautotransmissiondav4207 When I bought the car 3 years ago the was always had a slight whine in 1st gear, not loud but just there, never seemed a problem and never got worse

What would cause my 6l80e to only have reverse gear and no forward gears? I check the check balls in the valve body and non of them look shrink down.

@expressautotransmissiondav4207

Жыл бұрын

I've seen this happen with a broken 1-2-3-4 piston.

@terrencemcdonald7089

Жыл бұрын

I have the same issue. I drove from California to texas. No issues. I went to Walmart then when I was on the way back from Walmart I started to exit the highway and my transmission disengaged and I pulled off . I lost all fwd gears. But still have reverse. Transmission was at 190 degrees. Fluid is dark but does not smell burnt. No metal in pan. A little in filter when I broke it apart. Filter had a couple of slivers that were small. When I moved the valves one stuck a couple times. The forth from the left. What could it be causing it. The balls look fine.

I have a 09 denali with no forward gear. removed valve body and inspected check balls. no problems found. what can i do to verify if the problem is in valve body or the trans?

@expressautotransmissiondav4207

17 күн бұрын

@taylorolson6939 air up the 1234 clutch through the case passageway youll hear a massive leak in the 1234 piston.

Weird seeing our part being on a youtube channel. 🙈

@expressautotransmissiondav4207

8 ай бұрын

Oh yeah which part lol

Whats your price on r&r and a rebuild on a 6l80e

@expressautotransmissiondav4207

2 жыл бұрын

Base price starts at 3500 for complete job.

OK, so what's up? At 4:30 it shows the vacuum at around 24. Then you change the plug to one with an o-ring. Upon retest at 6:00, it shows a reading of around 21 - indicating a bigger leak than the original plug. You say "That's absolutely perfect". Explain.

@expressautotransmissiondav4207

2 жыл бұрын

This was a total dumb moment, lol. The first reading was without calibration of the vacuum stand. There's a break in the video where I realized I had not calibrated. With my gauge and new end plugs 21-22 inches of vacuum is ideal. Sorry for the confusion

@skutahuniai4830

2 жыл бұрын

@@expressautotransmissiondav4207 That must have been quite the recalibration. Your statement says you feel around 3 in drop is acceptable. 5 you say is too much. This means that if the second test is "ideal" at 21-22, the original test would have to have been around 17.

@expressautotransmissiondav4207

2 жыл бұрын

We're actually doing a video covering that this week. I will try to be as clear about it as I can. We will be covering vacuum testing and calibration more in depth. Sorry for the confusion one twist of that calibration knob and it reads all over the board lol