4l60e noise

firecadet613 · November 15, 2003

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 · November 18, 2003

Anyone have any idea?

GM GIMP · November 19, 2003

Could be the planetary set. This happens sometimes.

Hope not. Expensive fix.

firecadet613 · November 19, 2003

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

firecadet613 · November 20, 2003

Any ideas as to what this could be, if anything? The torque converter cover is not loose, so it can't be that rattling. Anything else it could be?

firecadet613 · November 30, 2003

Could bad u-joints cause a noise like this?

GMike · December 13, 2003

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 · December 14, 2003

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