hi, ive got a few q's for you trany guys,,

1 ive got codes p0101[mass air flow meter] only 1 time,p0847[press/solinoid B low pressure or stuck] 3 times, p0735[5th gear ratio incorrect]10 times,yes it limped down to 4th gear[3000 rpm at 60 mph], [only to be reset by stopping and turning off truck] this just started about 3,000 miles ago,i did limp it 1 time coming out of a rest stop and it was only in 2hd or 3rd[3000 rpm at 40 mph]
2 ive cleaned the mass air flow meter,droped pan and cleaned out fliud and changed filters 2 times and ck'd electric connects
3 ive been the dealer[cost $75.oo] just to be told they can't find a problum
4 i just talked to allision tech school in indy,they said to drop valve body and clean out everything and replace sol/switch b .and there 90% sure i can save trans
5 did you guys ever see this?
6 this is in a 2002 c3500 crew cab 2wd w/65,000 miles

thanks
7 i can limp it if i just add a little throttle going up a bridge overpass,i can't limp it if i mass throttle to the floor and get it to down shift to 4th

thanks, fred
3 ive been the dealer[cost $75.oo] just to be told they can't find a problum