Hi: I have a 2006 cobalt ss/sc n o modifications the only mod a replacement dry flow filter inside the sotck air box, but the car has this mod since new.

First last mont the car for the first time give me the check engine light (engine power reduce).
Since that moment the car is always in the warranty i scanned the car and always gives me the same 15 codes and the dealer response is that they made some table testing.

some are
P2135
P2138
P0101
P0102
P0103
P0650
P0130
P0136
P0068


The first time they replace the mass air flow.

Second time the accelerator pedal.

Now they told me that theres no computer update (reprograming-TSB) or replacement for the car computer serial number. The car is doing the same thing now and the dealer has the car for 2 weeks and they dont know what to do with the car. Because this car is rare in here in Puerto Rico just 5 and 3 are demostration on dealers.

Any help is appreciated Thanks in advance.