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4l60e noise

firecadet613

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firecadet613 Enthusiast

firecadet613

Posted
Posted

Ok this noise has happened at different RPM ranges. Tranny shop said it wasn't torque convertor shudder. Sounds like a real quick ratcheting noise that comes & goes, no performance issues and fluid is fine. Any ideas?

firecadet613 Enthusiast

firecadet613

Posted
  • Author
Posted

Fluid was fine when I changed it, had 30k miles on it, and the new fluid looks great. No issues with shifting or anything, functions fine, just the d**n noise. Noise went away when I overfilled the tranny for a day or two.

 

Joe

  • 2 weeks later...
  • 2 weeks later...
GMike Enthusiast

GMike

Posted
Posted

I have the 4L65E or 4L60E HD, and get a "clunking" sound moving in or out of 1st gear. Is that what your talking about? If it is, I think it is common amoung GM truck tranny's. Otherwise, if it is a bussing or rattling sound RPM dependent, it could be a heat sheild on one of the exhaust components.

 

Thought I would offer some suggestions, since no one else seemed to have any ideas. If you haven't already tried, do some searching on transmission problem's and start reading through them for ideas or similar compaints.

 

Good Luck!

cgabe Enthusiast

cgabe

Posted
Posted

You said ratcheting sound, right?

Does your truck have a NP231 or a NP241 transfer case?

I have a Dodge Ram 3500 I use for work and I had the same sound coming from the tranny and the problem was the t-case (NP241).

The output shaft of the t-case has the slipyoke on it. The slipyoke housing is held on the t-case by 4 bolts. I removed the slipyoke housing , exposed the output shaft of the t-case, and I found out that the shaft was moving back and forth because the snap ring that holds it place broke.

I took too long to fix the problem and the gears cost me $633 at the dealer. I did all the work myself so I saved money there.

There is one way to check if this is the problem: try driving your truck in 4HI. If the ratcheting noise goes away then your problem is the snapring that broke. The fix is a 10 min. job. If you remove the slipyoke housing you'll find the broken snapring in there.

Let me know how it turned out . Good luck.

 

Gabe

cgabe Enthusiast

cgabe

Posted
Posted

I forgot to add that to put the snapring back on you gotta grab the output shaft and pull on it to expose the groove the snapring goes in. :sigh:

 

Gabe

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