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jrat88

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jrat88 Enthusiast

jrat88

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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 Enthusiast

ridnlow

Posted
Posted

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 Enthusiast

jrat88

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Posted
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 Enthusiast

jrat88

Posted
  • Author
Posted
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 Enthusiast

Boehmer

Posted
Posted

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.

Bish Senior Enthusiast

Bish

Posted
Posted
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.

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