2005 deville, occasional tiny hesitation at stop

[55 cadi]

Hello all,

My new cadi has a few little things to work on, fixed a couple, but wasn't sure about this.
At a stop, or in gear but sitting at light, it has an occasional hesitation or flutter for a second and then stops, engine still runs when it happens, when driving you don't feel or notice anything happening.
Is this a fuel injector issue, like maybe needing injector cleaner to be used?
Thanks

[Dave Shepherd]

l would start with a full scan, look for pending codes, many things can cause this. Not knowing the history, could need a throttle body cleaning, bad wire or plug and so on.

[55 cadi]

Ok, thanks,
A little more back ground, had two codes, got them fixed, throttle body boot and intake gaskets, so no more codes except airbag, believe from water on connection.
Oil looks good, trams fluid good, runs great, smooth idle except a slight lower of rpm for a sec every minute or three.