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Did you disconnect your battery? If so you reset your computer. This happened to me, the fix was clean your TB and IAC. As things get dirty the computer will compensate for it. When you reset the computer it will go back to stock. Good Luck!!
Went and cleaned the TB. Lets see what happens. Also where on here was that DIY CAI? Want to do that now.
do yourself a favor, go to the dealership get a IAT sensor gasket, take out the bottom sensor, wich is the idle air temp sensor and clean the f*cker too, seperatly, then go to the dealership after and have them make sure your software is upt to date.
i have a similar problem, my idle sits around 6-700 and occasionly when parked it will stall, sometimes at red lights it has a fairly bouncy idle gives the truck a good shake. hasnt stalled for a few weeks tho