I got everything a loose but the transmision wont move 89 chevy 1500 4x4

Make sure uhav the rite fluid for that manufacturer. Chec to see if udid everything rite. Do uhav ahaynes or chilton shopbook

First start with a scanner and see what codes are recorded. You may have a communication link problem.

First is to get it to turn over. Of you have a good battery and everything is hooked up. turn the key on, crawl under it and jump the starter. Big starter lead to the small one. If it turns over and or starts. replace the fusible link(part of the wires) from the ignition switch to the starter. The link could be at the starter or up by the battery.

Check the end of the shifter cable located on the driver side of the transmission underneath the truck. They are common for breaking allowing you to start the truck but not go anywhere when you move the gear selector.

Probably the ignition switch (not the key cylinder) on the lower portion of the column or the actuator rod leading to it.

As far as the brake, your brake switch button may be stuck. It is above the brake pedal and looks like a chrome cylinder. There is a button on the end. See if you can get it loose. As far as the oil guage, the sending unit may be defective, Make sure the oil level is good in the engine.

you may have a bad or loose motor mount ..

Chances are is that the torque converter needs to be replaced. However, the transmssion on this vehicle are only serviceable by transmision shops. No regular mechanic will open up the transmission. When the torque converter fails (clutch and plates shutters to small pieces) the debri flows in the transmision thereby potentially destroying the gears and/or clogging the filter and pump. Go straight to a reputable transmission shop and let them correctly diagnose the transmission.

1989 20yrs old ,well it must have an ignition module ,but as i have never seen a truck like this i couldnt tell you the location ,its either by the coil or inside the distributor ,could evan be screwed to the outside of distributor .Iam sure this is your problem

try this :
with the car in park start it, then from park move it down one. if it is reverse move it down another one, now that should be neutral, then the next one should always be drive