No reverse 904 trans

probably blew the rear servo in the trans...going to have to drop the pan and check to see if it is cocked in the bore...also check the rear band...could be broken band or actuator..

the rear band and servo is what gives you reverse...the trans can have the forward gears still..

rear servo..can be repaired by just dropping valve body...
rear band broken...trans comes out...

there are aftermarket servo kits available..

http://www.bulkpart.com/2/product/A904servo/S12912.html

have used the sonnax one in 4 or 5 trans...there more expensive ones available too

http://www.sonnax.com/product-lines/high-performance-transmission/parts/3731