I was attempting to tune a 2009 GMC truck with the 4.8L V8 and when I was trying to read the ECM it showed that is was a V6 and failed to read !
Anyone know why this would happen.
I checked all my connections and tried to get it to read like times but it just would not read the ECM. Why would it show up as a V6?
I have tuned sevrel turcks but this is my first 09, am I missing something???