1996 GMC Sierra fuel system

1996 GMC SIERRA
212,381 MILES • V8 • 2WD • AUTOMATIC
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SHAGGYDOG1
  • MEMBER
  • 1 POST
i work at a small repair shop, i put a scanner on this vehicle and it came with these two codes po172b bank 1 system to rich, po175b bank 2 system to rich. could this be caused by the fuel pressure regulator?
Mar 19, 2008 at 3:48 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
yes it very well could. It will be a direct leak into the fuel system
Mar 19, 2008 at 7:14 AM
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