WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Intake Air Duct Clamps From MAF Sensor & Throttle Body
Courtesy of GENERAL MOTORS CORP.
Loosen the 2 intake air duct clamps (1) from air cleaner housing (2) and the throttle body.
Remove the air cleaner intake duct from the air cleaner housing and throttle bottle.