Tranny issue

**Willow9238** · 03-12-2008, 08:03 PM

I feel like a dumb ass but i am about to ask a dumb question? So like a dumb ass i was towing a 6000 lbs trailer wit overdrive on.

I didn't know i wasn't supposed to. Now I have a surging when my burb goes into over drive. Did I mess up the tranny or what? How do one balance a drive shaft. How can you tell if it needs o be balanced?

**tbplus10** · 03-12-2008, 08:52 PM

Try changing the fluids first, they may be burnt or you may have a clogged filter.
For drivshaft balance you'll need to take the driveshaft to a shop, they can put it on a machine that almost looks like a big metal lathe. It needs to be balance if it causes vibration or thumping, driveshafts almost never require balancing unless they thow a weight or get a dent on them.
Check the U-joints first, this can cause vibration or thumping also.

**Willow9238** · 03-12-2008, 09:54 PM

yeah, i will try that. The rear was good, and the u-joints are new. so i don't think its that. It's just the srging I am worried about. I don't want to have to find another transmission.

**Duramax04** · 03-12-2008, 10:58 PM

Hey neighbor, hows everything going in Marshall ? I`m close to Columbia just outside of Ashland.

**30 Yr GM Tech Burn-out** · 03-13-2008, 02:15 AM

Yea, you probably fried your old 88 tranny. It was due an update anyway. The shuddering is probably whats left of your OD clutches.Chattering inside your transmission. Get a good reman!and flush your coolerlines! All that cool stuff you did to your engine and no tranny work? Did ya at least install a cooler for your tranny before ya went to the tractor pulls!

sorry I couldnt resist!

**Willow9238** · 03-16-2008, 12:10 AM

Hey Duramax,
GM Tech,sorry been traveling for 2 days. No, no tranny work. The tranny was rebuilt 1 1/2 year ago. i didn't think it would be a problem. No tranny cooler yet. I was going to do that in a few days and i have this issue. how do you update a tranny. Sorry not a tranny guy, not comfortable with the damn things.