Accessory DC Power Control Module (APM): Location
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The APM is affixed to and located underneath the PIM. It is fastened to the PIM with external mounting fasteners and 2 internal high voltage circuit connection fasteners. The APM shares a coolant passage with the PIM and as such is gasketed to the PIM.