moter problems

[dsales]

i just put a motor in my grand am 3100 sfi with 56,000 miles my service engine comes goes on and off i took it to the pontiac dealer because i know someone up there he gave the codes to whats wrong with my car can any tell me what they mean.

DTC 22 TDS Low

DTC 44 Lean Condition

DTC 36 24x Signal error

DTC 41 IC Circuit error