How do you replace a rear transmision seal on a 93 c20 van

Remove trans, remove flywheel, remove and replace seal.

depends on where it is leaking from. either a wheel seal or rear differential seal

I’m happy to assist further over the phone at https://www.6ya.com/expert/brock_d67526d2a834c47e

You want to know if you need a new seal because it is leaking

Why would you ask that?

You ask if the driveshaft, just one day decides to move to the rear

Again --where would it go,it is attached to the rear differental
yoke,it has no where to go

You need to get under the vehicle & look at what your asking
about

Just plain silly

Yes --you need to replace the seal

The seal leaks,does the transmission even have any
fluid in it or will that fail next?

it is the rear proportioning valve that adds more rear braking as loads are put in the van.

It is about $350, Usually it is just the rusted lines. You can heat the lines carefully at the fittings to break them loose.

93-05 uses a valve with double flare fittings. 96-02 uses ISO (bubble flare) fittins. Otherwise the same.
I can get at discount if you really need one. 93-95 are obsolete now.

go here for help

gerry

http://groups.yahoo.com/group/villagerquest/

what most likely has happened is you have blown a torque converter seal, we see this all the time but you need to get it looked at immediately if you try to keep driving it you will damage the transmission if you haven't already, also with the fluid blowing all over the exhaust under the van there is the very real possibility of a fire.

have a 93 myself. first, check fluid level! when was the last itime you changed the magnet,filter, pan seal? could be as simple as that. need to change those filters every yr for happy van.
have a ob codes run. mine came up with speed sensor code. eventually
(had my tranny rebuilt. nightmare (sort of) : senoid blew after rebuild, then replaced computer. 4L60E's have issues after second gear. still working out my tranny issues)

Ontop of the transmission there is a little tube. Its only about 2 inches long and the size of a drinking straw. Use a coat hanger or something simelar and clean it out. This is a pressure vent. They are known for plugging up with dirt and other stuff picked up from the road. Get it clean and replace the seal you should be fine.

Hi ...first off remove drive shaft ....you will see 4 or five bolts just before the end of the transmission ...remove it to gain access to the rear seal ...pull straight out ...some times you will have to pry slowly to remove it ...then you will see in the shaft that the rear seal is in there ....push in and remove ....put the new seal in the reverse way

Installing a rear seal on the tailshaft of a manual transmision is very easy,,you dont need a manual to do this,,just a good proper sized seal installation tool,,,(you can borrow or rent )

You have to remove the transmission, remove the torque converter to access the seal. Most likely the bushing behind the seal is worn out allowing fluid to leak past the seal. After the trans. is out, take it to a trans. shop. It requires a special tool to change the bushing. Seems like a bunch of work for $10.00 in parts. The rear main seal requires pulling the pan to access it. When the trans. is out, this is the time to replace the rear main seal on the engine.