One problem related to ignition module has been reported for the 2008 Chevrolet Malibu. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Malibu based on all problems reported for the 2008 Malibu.
Only 3 of 4 power locks work, I have had this issue twice since owning the vehicle, the first time while it was still under warranty and was able to have it repaired, the second while no longer under warranty and cannot afford the repair. I experienced the effects of the body control module recall issues while on a road trip traveling at 65 mph when my cruise control disengaged and my brake lights would not stay off or on. I've paid to have this repaired and I am now awaiting the "official" recall notice from Chevrolet, despite having received the interim notice and already having had to have the vehicle repaired, in order to obtain a refund of the nearly $600 repair. Now, I'm waiting to get in to the dealer for the electronic power steering recall repairs and I've begun to experience issues with the ignition switch and key mechanism. Intermittently the vehicle will turn everything on, but not turn over or start the engine. The battery is new and this only happens sporadically. Also, with the same intermittency the key becomes stuck in the ignition / key mechanism on the steering column and it will not come out without significant wiggling and forceful pulling. I've also had to have the exhaust converter, manifold and gaskets replaced, a nearly $800 repair. Not to mention an earlier recall in 2012 dealing with the same transmission cables that I now see are being recalled once again via your site, however I've not seen a notice from Chevrolet.