Works in 2nd but not in 1st or rev.

Automatic or standard? If standard, clutch is worn out. If automatic, the regulator valve is worn out.

clutch bands may be slipping Re: Jeff

it could be your plug wires or the timing

The splines in the bucket are stripped out this is very common at my shop it needs an overhaul.

No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. R&R. Try not to run or drive the car or further damage could result.

Do you have manual 1st? If so, can you shift through the gears...i.e. manual 1st to manual 2nd then 'D' then 'OD'??? Only 1st and 2nd gears use the forward sprag unless the LO/Rev clutch is engaged...i.e. 1st and 2nd if in "drive". If you can shift threw the gears manually then, yes, your forward sprag broke.

If no manual 1st then your sprag is not what broke. Sounds like you blew up the rear planet. If you pull the pan and find chunks of iron and steel, then that is probably what happened. If you have reverse then it is not the pump. If the pump was bad you would have no line pressure and it would slip in rev. or no rev. Not the beef sun shell either because you have rev., a broken sun shell would cause no 2nd, 4th and rev. gears. Either way the trans needs to come out and torn down and it will be easily found what went. Good luck and thank you for using Fixya.

bad transmission

Super common problem with these units. Broken sun shell. Depending on where you are can be expensive. I fix this all the time for $950.00

It is propably the gear box. Take the seat off and you will see the gears inside. Mine works only in 2nd and not the 1st or reverse. But I know it is the gear box since my husband replaced the 1st one a while agao. Just need to find the web site for the repacement part. Only cost us about $30 to fix last time. Hope this helps.

Something you may want to check is to see if there is a "governor" for the 2nd gear. My 4 year old has a 4x4 similiar to this and the only two gears that worked were 1st & reverse until my husband had to unscrew a piece from the 2nd gear setting..check the manual or if you don't have one, look online through the manufacturers website. I hope this helps!

Check all your fuses. The ones in the car. and check if there is some under the hood.