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Speedometer Calabration VSS

Discussion in 'Chevy Trucks' started by Showkilr, Sep 17, 2003.

  1. Showkilr

    Showkilr Junior Member
    Messages: 2

    I'm Trying to find out how to recalibrate my Speedometer.. I changed the Rear out of my 92 C1500 from the stock 3.42 If i rember correctly to a 3.73 I noticed the speed reading is incorrect.. I cannot modify the ring in the trans since it is the 5spd.. Just curious. if this is a setting that can be changed in the prom.. or not. the ECM is a 16144288.

    1992 C1500

    Factory: 4.3 V6
    3.42 Rear

    Current: 305 V8 w/Roller Cam
    3.73 Rear