The idle hunts up and down for a few minutes after starting the truck. My scan tool never shows any malfunction codes. What could be causing this and what can I check to be sure? Thanks.
enblethen wrote: Some GM engines hae an "Idle Air Control" (IAC). It is located on the lower portion of the throttle body assembly. It sort of acts like a choke. Not sure if your rig has one.
That would be my WAG as well.
~ Too many freaks & not enough circuses ~
"Life is not tried ~ it is merely survived ~ if you're standing outside the fire"
"The best way to get a bad law repealed is to enforce it strictly."- Abraham Lincoln
Some GM engines hae an "Idle Air Control" (IAC). It is located on the lower portion of the throttle body assembly. It sort of acts like a choke. Not sure if your rig has one.
