GEP

My 2006 Coupe started throwing check engine lights about 3 months ago . The code was P0171 , I do know what that is. The code would clear and not return for 7 - 10 days app. So after 3 repeats I made a stop at the local chevy dealer . This brought a diagnosis of Intake manifold gaskets issues . " there's a slight leak that reseals as the engine warms " went the explaination .
Well a little self diagnosis brought the following :
1) The check engine light comes on at app. 375 miles since reset.
2) It makes no difference how the car is driven hard , easy .
3) The gas tank was filled at alternating intervals to see if that made a difference .
4) There is no loose of either engine power or fuel mileage.
My question is does the ecu reset or is there something else "magic " going on . Any help/suggestions would be appreciated .

GEP

Mike@DiabloSport

Change the gaskets

Its leaking (when cold) bad enough that the PCM cant correct the AFR to the point that it pegs the fuel trims and then throws that code. Its not helping performance or the health of your LS2

GEP

Thanks Mike , GEP