4L60E Messed up? Help Within

[CaRaZy]

The connector they are talking about is on the passenger side of the trans back from the servo (round thingy on side).

 

[94Sierra4x4]

Would like to add:

Speedo and RPM gauge read 0, loss of gear indicator lights, no 1st or overdrive,
Manual 2nd available, but starts in 3rd unless selected..
Will also have every transmission code in the book heh.
Check ignition switch. This is what my problem was.
If it's in here already, sweet, it not.. Sweet.

 

[Biggershaft96]

Yup, I fall under 12. Thanks for the advice good write up.

 

[Chris6060]

I have a 1994 Chevy K1500 350/4L60E.

The truck drives fine in R and OD. But if I manually put it into 1,2 or D, it has no forward movement. It started gradual, and got worse.

Any ideas?

 

[skobuffs]

Thanks this threads been a big help, always wondered about my delayed shifts into second, makes sense now...

 

[Kingjames]

my trans lost second completely and instantly but still worked perfectly other than that whats that sound like. i know nothing about transmissions other than replacing them.

Loosing 2nd is rare most likely 3rd goes first 1st shifts around 8-10 mph into 2nd 20-25 into 3rd

 

[Kingjames]

I have a 1994 Chevy K1500 350/4L60E.

The truck drives fine in R and OD. But if I manually put it into 1,2 or D, it has no forward movement. It started gradual, and got worse.

Any ideas?

Sounds like a valve body issue

 

[Kingjames]

i have no OD or D and it wont automaticly shift out of first. how do i replace the foward sprag? i dont have a clue what it is or what it does lol.

That is not a job for someone with no experience u will end up with a pile of parts

 

[Kingjames]

i have a 01 4l60e third flares up before it shifts seems to do it more often if its cold .the tranny just had brand new clutched put in it i bought the tranny with a blown third gear supposely .the tranny i originally had in my truck did the same thing and also second shifted pretty firm .i swapped valve bodys between the two and still acted up.i think both have the same problem.any thoughts?thanks

If they just changed clutches without changing 3rd clutch that would explain it or there is excessive clutch clearance

 

[Poncho72]

SHIFTS TOO SOON, through all gears?

my recently rebuilt 94 SWBRC 350/4L60E shifts from 1-4th way to fast unless i am really accelerating. if i take off at a fairly slow pace it will shift out too fast. sometimes it hunts through the gears up and down unless i accelerate or let it coast. never slips and shifts fine under moderate acceleration. any ideas?