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  1. D

    tahoe po171

    I just did fuel pump,plugs,wires,cap and rotor all delco parts 3 months ago..now I'm getting the 171 and the po174 code just changed the maf will see if code comes back ill let ya no..:flame:
  2. D

    tahoe po171

    Hi everyone I got a 99 tahoe with a po171 lean. I checked for leaks in the lines and changed o2 sensors. Do u think it can be injectors since it on one side and not both....
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