I Have 2006 Colorado Reg Cab 4x4 Auto.trying To Find Out If 06 Models Have The Head And Valve Issue .i Know I Seen Online Where Gm Is Covering 04-05.some Have Said There Is A Vin# Break Where Some 06 Are Effected.my Check Engine Light Came On A Few Times But Goes Off Next Day, Code Was Misfire Cyl 3 One Time It Went Out Within 15min Same Code.dealer Said My Truck Fell In That Vin #line But Then He Said It Didn't Just Wondering Didn't Seem Reassurring. Maybe Someone Here Could Help Thanks