I've had this happen a few times now, driving in town 30-40 mph, feels like the car shuts down and starts back up. If I have on XM it loses the channel temporarily, tonight the cd skipped to the next track. I was able to see the rpm drop from @1500 to near zero then right back to the 1500 range. I figure it's electrical, but the cel hasn't come on at any time. 08 SE with about 45,000 miles in case it matters. I'll probably need to take it back to the shop again. Thanks for any ideas or suggestion's. Enjoy the day all. Frank

 

I recommend get it in the shop as many times as you can with this problem while under warrenty just in case it turns out to be an expensive problem. for rpms to do that could only be the Camshaft Position sensors failing or not being connected tightly. Trust me when I say it is not a connection problem. Those connectors are on there and even when you tug on em, they don't come off. Either way take it in and have them look at it. Express your safety and family's safety. This way they will document it for a possible recall.

 

has anyone tampered with the throttle body? like moved the chamber by hand or anything?