I have a 2001 chevy tahoe lt...it has a rough idle...and also doesnt respond when i punch the accelerator...what should i do....i have replace the fuel pump....i have already clean out the tb...i have replace the fuel regulator...now my mechanic says that it is a bad intake gasket...can that be posible...or should i cleab the MAF first to see it that is it...please help i know i that alot of chevy tahoe owner have this problem and its frustrating....we take it to one and they say one thing we take to another and they say another..thanks for view and any commwnt would be greatly appreciated...