Thanks for the info.Hoping sandy isn't causing you to much trouble I forgot to see where your from before asking for your input.
All the best to you and yours
Brian knight 760-200-6356
You should have your dealership contact GM engineers like my dealship did after they chased the problem for 2 weeks and couldn't find it. GM has to approve all the repairs under warranty anyway. GM will have a record of my car here in Pa. having that issue too and it being fixed by the RMS being replaced. My dealship is Lafferty Chevrolet in Warminster Pa that fixed my car. But if your experiencing the same thing as my car did directly after the first oil change then its got to be the same fix. Another note for you is my car had the oil changed to Mobil 1 full sny. the day it got the oil changed and that is what GM recommends to be used so dont let anybody tell you that is the issue if thats what you did also. If you want you can call me at 215-840-8326 and my name is Dave if you need more detail