Transmission

Hi,
I looked your question up in Google and this is what I found under Automatic Transmission Diagnose By Symptom

No Reverse

Improper fluid level.
Transmission shift cable broken or misadjusted.
Improper band/clutch application pressure.
Fluid filter damaged or plugged.
Main control assembly gaskets damaged or bolt out of torque.
Main control separator plate damaged.
Pump assembly bolts out of specifications.
Reverse clutch burnt, worn, or leaking.
Direct/reverse servo piston seal cut/leaking.

Good luck