Need Help

[jrat88]

Guys,

I need some advice. My '01 Silverado 1500 with the 4.8 ( I have no idea which transmission I have, but its an automatic) has been slipping between 2nd and 3rd. It gave me no warning and just started this today. The transmission fluid is just fine, and I am not getting a code flash. Shifts through 1st, into 2nd and into 3rd, but when it goes into third it shift up and down between 2nd and third. Any thoughts?

[ridnlow]

How many miles on it?? The 4l60E (what you have) is notoriously weak/crappy.. some people have them last 100k+, some barely 20K miles.. could be one of the bands are gone in it..

[jrat88]

How many miles on it?? The 4l60E (what you have) is notoriously weak/crappy.. some people have them last 100k+, some barely 20K miles.. could be one of the bands are gone in it..

The truck has 135,000 on it, but the transmission was overhauled at 100,000. Is there a replacement tranny better than the 4l60e?

[jrat88]

How many miles on it?? The 4l60E (what you have) is notoriously weak/crappy.. some people have them last 100k+, some barely 20K miles.. could be one of the bands are gone in it..

The truck has 135,000 on it, but the transmission was overhauled at 100,000. Is there a replacement tranny better than the 4l60e?

 

You were right! I have a good friend who is a mechanic, ran it by him and we yanked the tranny out this weekend. Turns out that the 3rd and 4th clutches are gone. He also metioned something about a sprague gear????? At any rate it will cost me about $850.00 labor and all. Should I upgrade to another transmission? The engine is stock now (about 270hp), and at any rate I don't intend to get it over 300hp., do you think it would hold up?

[Boehmer]

There is the 4l65E. It's basically the same as the 4l60e, but with a few upgraded parts. Personally I'd talk to a good rebuilder and just have it rebuilt with some stronger components.

[ridnlow]

www.finishlinetrans.com level 3 4l60E should work for you... those guys know how to get it done..

[Bish]

www.finishlinetrans.com level 3 4l60E should work for you... those guys know how to get it done..

 

Agreed. I've got 45K on mine and I beat it good. I was just over their shop this afternoon as they are about a quarter mile down the road from my company. Class act. Very friendly and VERY knowledgeable. If you are interested, give Chuck a call and talk to him about it.