Here is a description of the possible causes :
Vehicle Moves In "D4", "D3", "2" & "1", But Not In "R" Position
Shift Fork Shaft Stuck
Modulator Valve Defective
Reverse CPC Valve Defective
4th Accumulator Defective
4th Clutch Defective
Reverse Gears Worn/Damaged.
To rectify you would have to rebuilt the trans.
Saturday, February 14th, 2009 AT 5:51 PM