1995 Chevy S-10

What do you mean "it wont kick in all?" Do you mean:

1. It doesn't kick in when you manually shift into lower gear.
2. It doesn't kick in when you take off from a stop.
3. It doesn't kick in when you accelerate (as in passing)

It could be that the transmissions operate differently in the two models, but it seems like extra engineering, extra manufacturing, extra costs. I had a '95 company truck that would not shift low when passing. It was an electrical/electronic malfunction, and apparently a nightmare to correct. So much so that they gave me a new truck.

it dosent go into low at all at no time

For starters, Why did you need to change the original transmission?

h

i changed the original transmission because the one that was in it only had 2nd gear and reverse. the transmission i had put n came out of a 1998 chevy blazer.

The days of taking any trans out of one vehicle and installing it in another are over!

Even programmable chips are specific for individual vehicles. Things like if the vehicle is a 2door model versus a 4door model same make etc. There are two questions that come to mind; 1. Was the problem with the original trans caused by something outside of the trans?

2. Is it coincidence that both trans' have no low gear?

I believe your best move would be to get the vehicle to someone who has the equipment and knowledge to properly troubleshoot the problem.

Just what does the trans do when you select "L" low gear?

h