My 1998 GMC Jimmy has the service engine light on. I took to an auto parts
place and they said the codes are PO 171 system lean bank 1 and PO 174
system lean bank 2. What does this mean and how to I go about fixing it.
This could be a number of things, but one possibility is that I believe the
central-point fuel injection system on these engines can be prone to
injector clogging - that could be the cause of the lean condition.
Robert Hancock Saskatoon, SK, Canada
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