07 SILVER GT CONVERTIBLE
Join Date: Feb 2010
Location: Carstairs Alberta Canada
I have the same whistle under acceleration (again).I say again because because I had the exhaust replaced once for the same whistle under warranty,before I installed the CRABs.You may want to have it checked by GM,mine is going back to be checked again real soon.By the way I never heard the whistle in the engine bay and re tighten all the couplers so I am reasonably certain it is exhaust again.
2007 GT CONVERTIBLE 3.9, CRABS 3 c/w FPU,RACINGLINE STB,PAINTED CALIPERS,CROSS DRILLED ROTORS,PAINTED ENGINE COVER RECESSED LOWER GRILLS,CARAID INTERIOR TRIM KIT,PERIPHERAL iPHONE STREAMING AUDIO,GTR EXHAUST,RACINGLINE MMI(STREET)