Greetings all. Have a 96 trans am that has an inaccurate speedo since cust. replaced ring and pinion. Some aftermarket company installed a ratio adapter to correct the speedo cal. but now car hits the rev limiter before it upshifts. Does anyone know if GM ...

FIX posted 2/16/1999

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