swathdiver
Full Access Member
this is was a city SSV Non AFM (verified by vin)
Hi Brent and congrats on your new truck! It looks great. I've highlighted the above because it is not true. VIN 0, the 8th digit, denotes the LMG 5.3 Liter engine which is FlexFuel AND has AFM. All GMT900 5.3 have AFM, the LY5 (non Flex Fuel) and the LMG and LC9.
Now, someone might have disabled it in the tune or it might have been physically removed and the computer modified as well. Next time your driving around, go to your instant fuel economy "screen" and see if the motor switches back and forth between V4 and V8. If it's in V8 all the time, then it has been disabled or removed or you're hauling too much weight around.
It appears the seller may have been ignorant or dishonest but if you're happy with it, then that's what counts and this forum is here to help you make it your own.