I have a 2008 cobalt ss tc with 90k... i drive my car last night ... no problem with it... i stop it at work after my work i start it and my car run like crap at idle... i pull the code... p0017... my boost gage is wrong when im at wot my gage pull 30psi.... what is my reaaly problem...

 

P0017 - Crankshaft Position - Camshaft Position Correlation

 

P0017 and with that milage timing chain is surely streached