1996 Siverado four wheel drive not working and transmission has no forward gears but does have reverse. If I pull the 10amp trans fuse to go into limp home mode and by putting gear selector in overdrive or drive, I have third gear only and also have reverse. There is no check engine light unless I pull fuse. Scanner only has PO; 753, 758, 1860, and 1886 only when trans fuse is pulled. Has anyone seen this kinda problem before. I searched wide and far on the web and cant seem to find this kinda problem anywhere. Your advice would be greatly appreciated.