Hi, when I am running on D, the transmission change without problems but when I change to L1 or L2 the vehicle don’t want to move correctly. What can be the problem?

 

You should have a 4R or 5R transmission, 44E or 55E doesn't matter
Does the OD light on the dash flash?

Try to read the codes from computer, the P07?? codes are for transmission, need a good reader to see these

It reads like the coast clutch is not working, when you are in D and take your foot off the gas pedal does the engine slow you down or is it like you are in Neutral?

If you shift to 1st and start off then take your foot off the gas does it slow down quickly, or does it coast like in neutral?

 

When I change to L1 or L2 it coast like in neutral or very few forward movements, but on D change without problems.