How do you set the speed on this truck,I have reset the ECM/TCM no help,he has 285/75/16 and is 5 mph off ? He has been told we need to get hypertech and that EFI can not chang it ????
How do you set the speed on this truck,I have reset the ECM/TCM no help,he has 285/75/16 and is 5 mph off ? He has been told we need to get hypertech and that EFI can not chang it ????
Last edited by JST; July 28th, 2012 at 04:50 AM.
2002 GMC 2500HD 4x4 SCLB STOCK MOTOR WITH TOMAN TUNING,FASS 150, M/A TRANS,11.90 ON A GOOD DAY IT'S MY WORK TRUCK,19 TO 21 MPG WITH ME DRIVING,THE TRUCK (OLD RED )HAS 909,000 MILE AND LOVING IT,285/75/16
H0105