Vehicle speedometer will register only up to 13mph then stays there no matter how fast vehicle is moving,with scanner reading vehicle speed the reading is the [...] test on vss with vantage and all tests pass. replaced ecm with no help- did use old prom chip f...

FIX posted 5/18/2004

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle