GM Truck Club Forum banner
p0171
1-1 of 1 Results
  1. Chevy Blazer Forum (GMC Jimmy)
    2000 blazer 4wd Got this code over a month ago. Started off by replacing the O2 sensors since they looked old. No change. Replaced a lot of bad vacuum tubing. Didn't change anything. Got a cheap but effective smoke machine. Found the upper plenum was leaking at the gasket. Replaced gasket and...
1-1 of 1 Results
Top