These are the codes im pulling, would any of these effect why my truck stalls in reverse and stumbles sometimes?

I have an actron autoscanner cp9180 so i can look at all the specs while the trucks running, and i found that the tps is at 14.5 percent at idle and changes when i push on the gas.

 

14.5 % is normal. The pcm just learns that as your closed throttle position. 320 is your crank sensor and it will make your truck run poorly if it's bad. 1391 is probably some DC stuff. I don't know.

 

yeah i did some reading and it seems like im having alot of symptoms of a bad crankshaft sensor.

I just don't get why it'd make the truck stall in reverse after a few seconds but not in drive.

 

anyone?

I just want to get this thing fixed.