4 Wheel Drive/SUVs: 97 blazer, p0171, o2 sensor

Question
I am having troubles as soon as the truck warms up after about 20 miles of driving it will bog down when trying to accelerate the code i get is p0171 bank 1 is lean i have had changed the fuel pump when it went out about a month ago fuel filter O2 sensors full tune up wires everything coil module tps sensor please i need help

Answer
I still feel like you need to chase down the o2 sensors. you may have a bad wire or something. Once they warm up the sensor is supposed to go into a "closed loop" cofigurtion to adjust the fuel. I believe there is a problem with the o2 sensor or wiring