4l60e problem

[Chizzychase]

So here lately my transmission has been shifting pretty funny and most noticeably from 2nd to 3rd gear. Sometimes 1st to 2nd is hard as well but the 2-3 shift is worrying me because I know these transmissions like to blow the 3-4 clutch packs, And I've been told if it has started to go that I shouldn't change the fluid in the transmission because then I'll loose all the burnt clutch material in the trans fluid and essentially end up loosing third and fourth gear. I figured I would post this seeking any input or advice from you guys. I've been thinking about putting the corvette servo in and seeing if that would help but I'm afraid to touch the transmission for fear of blowing it so any input is welcome please and thank you

 

[Chizzychase]

FYI vehicle is a 04 Yukon with 151,*** miles never been rebuilt just regular servicing since it was bought new

 

[Rivieraracing]

Have to ask, have you checked the level of fluid and also the color/smell of it?

 

[Chizzychase]

Fluid level is where its supposed to be not leaking. The fluid is due to be changed its black and smells burnt but I'm worried changing it would cause problems because I've had multiple people tell me not to change the fluid because ill loose third and fourth because the clutch packs have started to wear down and changing the fluid will take away the only clutch material left for those clutch packs

 

[treehan77]

Sounds like it already has problems what's there to lose Are you not gonna fix it? Changing fluid might help, might "break it more" but isn't it already broken.

 

[Chizzychase]

Okay so I had a brain fart for some reasoning thought it was black and burnt but... It's not black nor burnt fluid is dang near perfect looks and smells almost like it came out of the bottle. So I have no idea what it could be I'm drawing a blank.

 

[Donnie Yukonie]

are you running any codes? maybe a tourqe converter lock up issue as well

 

[Chizzychase]

No lights are on so assuming no codes are present at this time. I found a video of this shift kit by transco and it fixes a lot of common 4l60e problems as far as wonky shifts and such things and I'm not sure if it would help or not

 

[Chizzychase]

Anybody got an idea?

 

[jerryjoe28]

151k im sure u know what is happening .... more than likely the clutches are worn and just not engaging completely. yes a trans kit and upping the line pressure will make it shift better but this is only a temporary fix. you are more than likely on your way to a rebuild