You need to check with the manufacter of the scan tool and see if it is CAN protocal. Which means older scan tools will not communicate with newer vehicles. In 05 they started what they call GM high speed and low speed LAN, which means the modules will communicate much faster. In 04 and older they had class 2 communication which was much slower and any scan tool would work. You need to have you scan tool updated or buy another one.
Thursday, December 11th, 2008 AT 12:22 PM