I WILL BE SHOWING HOW TO LOOKUP GENERAL MOTORS CALIBRATION FILES, FOR YOUR VEHICLES COMPUTER, TO SEE IF THERE IS AN "UPDATE" AVAILABLE.
Link ACDELCOTDS/subscription.com REMEMBER MANUFACTURES WOULD RATHER FIX A VEHICLE WITH SOFTWARE INSTEAD OF HARDWARE.
THIS IS A MUST FOR ANY DRIVEABILITY TECHNICIAN, ON THESE LATE MODEL CARS AND TRUCKS. FIND ME ON FACEBOOK AT CODY'S AUTO DIAGNOSTICS