Which check engine code is showing for the throttle body? Has it been cleaned to remove foreign matter from around the blade mechanisms?
I have cleaned it and checked for any obstructions, everything looks good. Code is P0507 Idle air control system RPM higher than expected. Seems to be doing it more now.
2009 G8 GT SRM, OBX Catless Long tube headers, DOD Delete, LS3 stock cam, tuned with HPTuners, Atari gauges.