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2011 Malibu LTZ 3.6L V6 Red Jewel Tintcoat
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If you share the trouble code(s) here, you'll more likely get more help.

Also, please read this post and provide more information.
 

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I'd be looking up TSB's or asking the dealer if there is a re-flash for the PCM for this.
I have an Identifix account, but their server is down as I type this
 

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I checked all five of the bolts and two were slightly loose. I tightened all five and fired it up and let her run for about 10 minutes, not one hiccup. I need to go take it for a spin today and really see if that did anything.

Word of advice...make sure you remove the two fasteners on the back of the intake mani "airbox" that hold the two hoses running on the backside. Other than that, you can just move the airbox up and to the side and check all the bolts, no need to remove the hose hose connection at the throttle body.
 
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