H3 Hummer PCM Programming
After some research using the internet on PCM’s and Tuning, I found out that I don’t have the latest tune / reflash from GM for my H3’s 2006 3.5 L (211 CID) L52 I5 cylinder engine. I was able to check my vehicle by using a simple OBDII sensor I have and cross-referencing numbers using TIS website by entering the VIN number. I compared the tune number from my previous post P0455 & P0442 ECU Fault Log H3 Hummer where the Vehicle Calibration ID on my vehicle as 12606370. The tune 12606370‘s description mentions that it is for “New software Continue Reading → H3 Hummer PCM Programming