Like the title says, my buddies trailblazer is giving me a few headaches. When I connect HPT to this and go to read it, it all starts out like normal, starts reading but then it seems like the PCM resets, data stops moving (based on the "busy" light not flashing), goes to low speed for a sec, goes back to high speed, works for a sec and repeats. Trying this process again with low speed still results in interuptions. Any ideas? We checked batt, cables, unplugging uncessary electrical, nothing seems to provide any bit of change. Thanks a bunch,
Tad.