I have a 2007 Grand CRD and yesterday a red light came on (looks like a lightning bolt with a line on both sides) and the motor feels extremely under powered and doesn't want to let me go faster than 25-30 MPH. It behaves a lot like when a duramax goes into limp mode. I haven't had much time to look into it yet, it did throw the check engine light on so I'm going to run the codes tonight. I did try disconnecting the battery for about 15 minutes and it didn't help. Was just wondering if any of you might have an idea of what might be going on or maybe push me in the right direction? The motor has no issues running and idols normally. I've tried looking up information on the "red lightning bolt" light and it looks like a number of things can trigger it. Thanks for any help and input!