84 reactions · 13 comments | GM Programming Walkthrough With the mandatory data sharing law recently passing in the senate, we are on the cusp of legitimate manufacturer data access. An important aspect of this is access to calibration files to carry out repairs with software updates, as shown here as we walkthrough how to update a PCM on a GM product. To join TaT visit www.tat.net.au/social.html Capricorn Society | The Automotive Technician | Facebook