I'll start from the beginning, 2 weeks ago I rebuild the tranny and put it back in the Blazer, prior to that the truck sat for about a year. I just came back from the store and the truck shut off 2 times on the way home, my speed at the time was about 80km. When I got home I pulled the codes and this is what I got P0131, P0507, P0337.
I'm going to also put the freeze frame here cause I can't make sense of the freeze frame.

1997 S10 Blazer 4X4, 4.3

Fuel Sys 1 CL
Fuel Sys 2 CL
Calc Load(%) 16.08
ECT(F) 177
STFT B1 (%) 50.00
LTFT B1(%) 13.28
STFT B2(%) -7.03
LTFT B2(%) 13.20
MAP(inHg) 18.90
Eng RPM 1747
Veh Speed(mph) 16
MAF(lb/min) 4.33
TPS(%) 16.47