96 jimmy tranny prob

Jumped in the wifes Jimmy last night, (first time drivin' it in awhile), and no reverse. Put it in drive, nothing. Pop the hood, check the oil, nothing on stick. Add 3 litres and back to normal. This morning I take it to my work, drive over the pit, get under it and find tranny oil all over the place. Checked the cooler lines - all good, checked the pan - no leak there. The back of the torque converter is wet, I guess the front seal is gone. When the Jimmy it sitting, it's leaking down the bellhousing and dripping off.

What a PITA this is gonna be, drop tranny, t-case, driveshaft, etc. to change a simple friggin' seal!!!

Is this seal a common problem on these? What kind of tranny is in this Jimmy cause I need to make sure I'm getting the right seal?

1996 Jimmy 4WD 4.3LVortec

TIA

tranny is a 4L60E

I figured it was a 4l60e, just wanted to be sure. Thanks

Does at 1993 Jimmy 4x4 have a 4l60e or the 700r4?

I'm not sure but the 4l60e and the 700r4 apparently take the same front seal.

Called my tranny guy today cuz I don't have time to change the seal. He told me that on a 4l60e high miler tranny, the front pump is most likely gone and the bushing would've come thru the seal. Not always the case but alot of the time this happens in high milers. So I've decided to pick up another 4l60e, check it out, install it and then keep my original for a spare. A guy at work has one with alot lower miles and only wants $50 for it. I think thats a good deal!

Does at 1993 Jimmy 4x4 have a 4l60e or the 700r4?
4l60e was introduced in 1993

The 4L60E was introduced around '93. The 93-94 will interchange. The '95 is on its own, and is only good for the '95 model year. The '96-'97 will interchange. The '98 to '00 will interchange. The '01 to '05 will interchange. Make sure you get the right trany or you'll have problems.
Good Luck!

The 4L60E was introduced around '93. The 93-94 will interchange. The '95 is on its own, and is only good for the '95 model year. The '96-'97 will interchange. The '98 to '00 will interchange. The '01 to '05 will interchange. Make sure you get the right trany or you'll have problems.
Good Luck!

I did not know this, thanx for the info.

I was told that if the truck has push button 4wd then the trans is a 4l60e, but if the truck has the console mounted level to actuate the 4wd then the trans is a 700r4. Does anyone know if this is correct information?

I was told that if the truck has push button 4wd then the trans is a 4l60e, but if the truck has the console mounted level to actuate the 4wd then the trans is a 700r4. Does anyone know if this is correct information?

Not necessiarly true. Usually all the push button 4x4 did get the 4L60E tranny. Very easy way to tell if you have an electronic tranny or not. The 700R4/4L60 has a throttle body cable that comes up and connects to the throttle body. The 4L60E does not need a throttle body cable. If you have a TB cable you have the the 4L60, if you dont have a cable, you have an electronic transmission.

That is true.. just because you have the floor shifter for 4x4 does not mean you have a 700R4. 1993 GMC Jimmy's were loaded with the 4L60 and have a floor shifter for 4x4.

The 700R4 and the 4L60 are basically the same transmission. The main differences are the electronics. 700R4 is not, and 4L60 is. You can easily tell by looking at the passenger side of the transmission, just behind the bell housing. You will see your dipstick coming down into the transmission. Behind the dipstick is one of two options:

1) A kick down cable, single black in-cased cable that goes up to top of engine. (700R4)

2) A bundle of wires leading to the transmission with a plug. Plug should be grey where it mounts to the transmission. This plug has a "squeeze release". Basically you squeeze two opposite sides and GENTLY pull up on the harness. This harness is EXTREMELY sensitive. Be careful how you remove it... and only if you need to.

Instead of a different transmission, how about just replacing the pump bushing, seal, vanes, reaction sun shell, and take a close look at the clutch plates and steels? You might also need a new separator plate or check ball seat repair kit once you get into it.

A new plate is about fifteen bucks. A new pump bushing and vanes will be another ten bucks. The sun shell will be about $45, and don't even think of using a stock unit. A seal/gasket set is about $30. For all that, you'll have a reliable. working transmission.