Just pulled a P0406 exhaust gas recir sensor circuit high. Any idea what to look for.

Thanks Kevin

its usually the egr valve, very common

I just replaced the EGR on my 2005 GC SXT last weekend. Its an easy job. However, with yours being a 2005 also I had to find out if mine had option code XZZ or not. I called the dealer and gave them my VIN and they let me know. He told me most of the 2005's are with code XZZ.