So many things wrong with my truck

[Frenchy]

TROUBLESHOOTING
-Catalyst Efficiency low- bank 1
Explanation
The oxygen sensors monitor the Catalytic Converters ability
to score oxygen
Probable Cause
-Catalytic converter defective
-Engine misfire or running condition
-Large Vacuum leak
-Engine oil leakage into exhaust - valve guide
seals, piston rings




So i guess i have to change out my O2 sensor on bank 1 right?

Your catalytic converter is toast (most likely), cut them out and get the rear o2 sensors shut off in a tune, the front o2 sensors are what monitor the A/F ratio, rears just keep tabs on the cats.