USAFTankDiver; try this link (copy/paste) for complete wiring diagrams for 2008 and 2009 Malibu, according to the source that I downloaded it from. Please check all wiring for accuracy before modifying system. Good luck and let me know how it goes.It's a 2010. The stock speakers are there. Im trying to install an amp and looking to splice into the wires other than behind the OEM head unit.
By the way, retired USAF here (21 years, retired in 1992) Aim High!