06 rear end gear change problems

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by Revsracing, Sep 6, 2011.

  1. Revsracing

    Revsracing New Member

    06 silverado 5.3 flex fuel. Changed gear from 3.23 to 3.73. Now have abs light can't get rid of. Used hypertech programer and went quarter inch at a time on tire size no luck. Also says I have a p0045 code but I don't have a turbo. I can use some help.
  2. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    Welcome to the club, Mike. I see you played with the tire size, but did you adjust for the new gear size?
  3. Revsracing

    Revsracing New Member

    yes, ive tried everything on programer. Stumpted

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