First thing to check is fluid level. The vehicle is getting older may just be wear, try adding "Lucas Transmission Conditioner" But be sure to first remove enough fluid to keep from overfilling.
you pour it in :)
the 1996 and 1997 are the same and would not work in your 2000 straight from GM
where is the transmission control system on a 1996 chevy silverado 2 wheel drive 5.7
The 1996 Chevrolet blazer transmission control system helps the transmission to maximize optimal fuel consumption. The control system keeps the transmission in the overdrive gear.
1996 Chevy blazer timing chain
It's back by the firewall. At the rear part of the engine.
my Chevy blazer power seat on my 1996 Chevy blazer isn't working
what is the distributor setting for a 1996 Chevy blazer
what arethe 3 relays in the glovebox on a 1996 chevy blazer
What is your 1996 Chevy blazer LS with a blown motor worth?".
A 1996 Chevy Blazer Does have a transfer case IF it is equipped with 4 wheel drive
these transmissoins will not interchange. To be sure I would call a salvage yard and ask them; they have a HOLLANDER exchange and they can tell you for sure.