Have seen similar posts on this forum and tried basic remedy of spraying cleaner into IAC port..?? Issue does not throw code, so dealer seems lost.. Looking for common remedies.. IAC motor? Power Commander issue?

 

ill have to find it when i get home but there was a variation of this that i didn't try when i had this issue that involved using the throttle and key on and off to get the iac to open up when you spray the cleaner in there. sorry to hear though.. fixed my 09 in no time with just a little MAF cleaner spray. could try replacing the iac all together i suppose i dont think its all that expensive of a part.