1995 Chevy S10. The transmission (4L60E) has been

Chevrolet / GMC / GEO Transmission Look Up Table

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Blazer, 1993-, 4L60-E. Blazer, 1994 - Up, 6.5L V8 Turbo Diesel, 4L80-E. BLAZER/TRAIL BLAZER/JIMMY, 1995-2003, 4 SP RWD/4X4, L4 2.2L L6 4.2L V6 4.3L ...

Transmission Applications - GM Automatic Transmissions

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Avalanche, 2001-06, V8 5.3L 5.7L 6.0L, 4 Spd RWD/4X4, 4L60E. Avalanche, 2004-06... Camaro, 1994-05, V6 3.4L 3.8L, 4 Spd RWD, 4L60E. Camaro .... Monte Carlo, 1997-05, V6 3.8L (W/S.C.), 4 Spd FWD, 4T65E. Monte Carlo ... Silverado, Sierra,1500-3500, 1995-06, V8 4.8L 5.0L 5.3L, 4 Spd RWD/4X4, 4L60E. Silverado ...

4L60E Transmission Rebuilt ' eBay

Are you replacing it? The info you gave should be enough for a dealer or parts store to look up the right part.

if ur going to service one about 5qts maybe 6qts on a 4x4 if the 4L60E is bone dry(rebuilt) 12 to 14qts

Your best fix would be to install a hydralic lock-uo kit in the transmission.This would be best done by a good trans shop.The lock-up systems between a 4l60 and a4l60e are quite different and would shorten torgue converter life.Hope this helps you.

It sounds like you may have a sun gear failure. Before we go there check the fuse for the transmission, make sure it's still good. Good luck and keep me posted. 

It will be a PWM type stay as close to same year as possible so as to not run into seperator plate issues.

NO the converters and valvebodies are wrong. 1 is PWM modulated and other is not.!

check link to trans to see if is working when you select it to reverse are could be trans pump in the trans may need to rebuild the trans

There isn't a modulator on this trans as it is electronic

You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward.

It is a very common issue If you have a 4L60E, you may have a problem with the valve body. As the valves bores get worn hydraulic pressure is compromised, there are fixes out there for this transmission, check out www.sonnax.com they have many parts to help resolve the transmission of these problems. Also you should check or replace your separator plate as sometimes the check balls that regulate the hydraulics of the transmission become stuck onto the plate. I've done quite a few of this model transmission and its almost always the valve body problem. HOWEVER FIRST CHECK YOUR FLUID CONDITION, if the fluid is good and there isn't a large amount of debris in the pan you should try to either get a new valve body or have your rebuilt with the parts from sonnax that eliminate these hard shift problems.