no reverse
I would agree when we have one come in with no reverse we start by pulling the pan you will most likely find big pieces in the pan (NOT GOOD)
reverse mean hard parts failure it take comb of clutchs working togeather to make reverse.
I think its time for trip to trans shop or time to order a rebuild and install yourself, if it is a hard parts failure make sure you clean the lines out, I normally replace the coolers as there cheaper than the transmission to replace
good luck keep us posted
2003 CHEVY 4500 DURAMAX/ALLISON 14'
SERVICE CRANE BODY 16,500 LBS 14.5 MPG
1998 K3500 SRW CREW CAB TRANSPLANTED 6.5TD ELECTROINC INTO, HEATH COMPUTER, 40+HP INJECTORS, 4" EXHAUST, VACUUM ELEMTINATOR ON TURBO,UPGRADED COOLING WITH ALL GM PARTS,NO VACUUM PUMP, SST OIL COOLER LINES MADE LOCALY FRACTION OF THE COST, 3" TOURBO/BOOST GAUSGE ALL IN ONE, ADDED GEAR DRIVE GREAT HELP WITH STARTING TIME DOESN'T JUMP AROUND ANY MORE, INTERCOOLER 3" INLET AND OUTLET COOLER 12x24x4, ALSO ADDED MANDEL BENT CROSS OVER, HAD TRUCK REPAINTED AND OPUT ON ALUM FLAT BED