Transmission issue

[Allegretto]

i was coming home from running errands today and in my effort to move out of the way of a turning school bus, my transmission made a sound that can only be described as a train wreck. i went to drive home and the tranny whined like a cat being skinned alive before returning to normal operation, after which it would only shift after shooting to 3000 rpm. i drive a 2001 olds bravada with the 4.3L engine. im sure i destroyed something in the tranny because now the truck wont move when i put it in reverse. it will go into all the other gears fine, but reverse is the same as neutral. i dont have the money or time to try and rebuild the tranny, so a replacement is my only option. i stay in southwest ohio and i need to know what i did wrong and how hard its going to be to get my tranny replaced. any and all info is as always, very welcome and much appreciated.

[Chris Stewart]

It doesn't look good but I don't believe you did anything wrong.

Here's a thread,
http://www.automotiveforums.com/vbul...smission+shell

[Allegretto]

well after looking at that forum you posted, my pockets are screaming in terror.....i didnt even pay 2000 for the truck....but like i said i dont have time to wait for it to be rebuilt so im going to have to go with the replacement route because i need it up and running asap. thanks a lot for the info, but my wallet is cursing your name right now....

[Chris Stewart]

While it's apart, you might as well have them change the transfer case lube to the GM AutoTrac II blue fluid to head off those problems.

[ericn1300]

Originally Posted by Chris Stewart

While it's apart, you might as well have them change the transfer case lube to the GM AutoTrac II blue fluid to head off those problems.

I still haven't gone with the blue fluid, Is it advised for the 92 with the all mechanical Bosh transfer case too?

[Leeann94astro]

^ No. Dexron in the Borg Warner case.

[Allegretto]

yes i will certainly take measures to prevent this from happening again because its costing me a ton of money for the truck to not be running. a friend of mine told me it could be the sun shell(?) and i should buy a stronger one and have it put in place of the oem shell. is he blowing smoke or should i take his word?

[Leeann94astro]

The sun shell is indeed the usual suspect when reverse goes. And the one you want is called The Beast.

[Allegretto]

thanks for that useful info. ill most definitely buy a beast and put it in

[trannyman52]

the reverse reaction shell (sun shell) will be the problem......replacement can be stock,,,,the animal,,,,the beast,,,,or the one sold by Sonnex NOT USED !!!! they ALL will break!!!!!,,,watch the rolling reverses,,,life is good !!!!!

[ericn1300]

Originally Posted by trannyman52

the reverse reaction shell (sun shell) will be the problem......replacement can be stock,,,,the animal,,,,the beast,,,,or the one sold by Sonnex NOT USED !!!! they ALL will break!!!!!,,,watch the rolling reverses,,,life is good !!!!!

It's a real problem, the sun shell broke twice on mine but they had well over 100k miles on them. An $1800 repair last time. The shop only warranties them for 30K

[Chris Stewart]

Even on our 4L60's?
What's a rolling reverse? Mine always rolls when in reverse.

[Leeann94astro]

As in, don't put it in reverse while it's still rolling forward. Screws up a tranny in time.

[Chris Stewart]

Really?
I'm sure our best ol' buddy Eric wouldn't do that.
Are there other ways to frag the thing?

[Leeann94astro]

The stock sunshell will frag itself given time. It's a matter of when, not if.

That's why the Beast exists.