I have a Blazer K-1500, 4x4, 350CI TBI. It has a funny problem: when
speedometer indicates 50MPH, I´m going 60MPH, when indicates 75MPH is
going at 90MPH.
I do´n´t know if it is possible to change the information in computer
so I can have dependable readings in speedometer and odometer, as well
as stop having problems with police.