Just changed my transmission filter in 2002 isuzu rodeo and now it will not go in gear. Checked transmission pan and it doent have any fluid in it but my resivoir is still full

SOURCE: how to change oil transmission isuzu rodeo 2003

There are two drain plugs on the bottom of the pan. remove the lower one to drain the trans fluid. To refill, use a pump and pump the fluid into the upper drain plug until it seeps out and re-install the plug, similar to refilling a manual trans.
Once this is done, Start the vehicle and run it for about 3 minutes, shifting through all gears (do not drive vehicle Remove the upper drain plug and let any excess fluid drain out. Done. This is as per Mitchell OnDemand.

SOURCE: how to check transmission fluid on 2001 isuzu rodeo

There is no dipstick on your auto trans. Checking it is a real PITA The trans pan has 2 plugs in it. The one on the very bottom is the drain. The one in the corner, up higher in a recess is the check/fill plug. To check, the engine must be warm and running, tranny in P. Remove the plug and fluid should dribble out. If it doesn't it's low, fill until it dribbles out, while engine is running. Obviously the truck must be on a lift or up on jackstands.

SOURCE: how to fill transmission fluid 1999 isuzu rodeo ls

Lee2fixit doesn't know what he talks about on 99 Rodeos.

There is no dipstick tube - there are two access holes on the side of the transmission. The bottom one is to drain it out. The top one is to fill it back up. It is full when the fluid comes up to the bottom of the top hole.

Or you can take it to a dealer or service center to have it done.

SOURCE: 2001 Isuzu Rodeo transmission

under the truck you will see the large trans fluid pan. there are two 3/4 inch bolts. one recessed about 2 inches and one flush with the bottom of the pan.  The recessed one is the fill tube and the non recessed one is the drain.  You will need a pump of some sort to pump the fluid in the fill tube until it starts draining out.  I think if you start the truck the fluid will lower and you can put more fluid in until it drains again.  I dont know yet what kind of fluid to use.

SOURCE: transmission fluid level

I have a 1998 Isuzu Rodeo however when I purchased the vehicle I managed to obtain a service manual on mine.
Mine is a V-6 3.2liter engine with automatic transmission and it took me a while to find out where I added transmission fluid at too.

It is located under the vehicle on the Passenger side of the vehicle and it is located on the transmission just before the transfer case. There is like a eye beam across one side to another then there is like a Indent the lower one is for drain and the upper one with a larger bolt like plug is the fill hole. I used a turkey baster with a large bulb like affair to **** the transmission fluid in to it from the bottle then I inserted the baster up and into the hole vacated by the plug. Then squeezed the fluid into the transmission and kept at it till the fluid dripped out on its own. I hurried and inserted the plug into the hole and screwed into it and tightened it up and lowered the vehicle down checked after the vehicle had been warmed up and re jacked the vehicle up and rechecked and all I needed was a small squirt into it and it was full and since then it has been running really well since.

Lucky W Donegan [email protected]
Polson, MT.