I have 1995 gmc jimmy 4l60e trans long gates shift from 1 to 2

On the 1995 Jimmy, the shift cable can come loose on the mount on the side of the transmission where the cable meets the trans. When it slips, the alignment goes off and causes the driver to not be able to put the trans into park. If you take a long stick you can push the shift arm on the trans to the park position and your trans will go into park.....what you (and I) really need to know is how to take the shift cable mount apart and reset it.

Mine does the same thing, Have not found a fix.

i would be looking at the ecm are the pcm they are the same controls the engine and trans

I am sorry but i know this symptom on this exact transmission and u are going to need an overhaul.

Sounds like the trans. is shot, try a quick service (Fluid and screen) if that doesnt work try a used trans.

do u have any trouble codes for the trans? u need to find out to see if a shift solenoid (possible 2-3) has failed.

Your going to have to get the Jimmy scaned before youhurt the transmission, It sounds like it's on a Limp mode which can range from a tune up to a bad ground. Good luck.

You might want to try this if its got a kick down cable unhook it from throutle body and pull it out as far as you can and let it snap back, do this a few of times, sometimes a valve gets hung up inside valve body of trans. and won't let it shift. If that don't help you may have to pull pan to dislodge it if thats the problem. chk. the plug on trans. (Its a 4 wire white plug) with test light with key on to see if there is power down there one will be hot, thats for overdrive, now on top of intake in front throutle body there is a sending unit that looks like a temp. sending unit with a 2 wire plug on it that sends a signial down to that plug when engine gets to temp. to let it shift to overdrive. Maybe this will help, or give you some ideas.

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.

If you Install a Shift Kit and get The Shift Balls Reset it will fix this Problem For ya.