GMC Fast idle problem

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Tutor: None Selected Time limit: 3 Days

I have a 2001 Sierra with a fast idle.(3000 rpm) I have found no vacuum leaks and have changed the TPS, IACV, intake gaskets, EGR valve gasket and have disconnected the fuel injectors one by one with no change. I do not know what to look at next to fix the problem. The only thing else I can think of is the ECM ?
Sep 1st, 2013
Is something blocking you throttle cable
Sep 1st, 2013

my throttle cable is loose, everything is moving the way it should, throttle body is clean

Sep 7th, 2013

disconnect the battery for a little and see if the ECM resets itself. If not, its been hardcoded, thus, servicing in required.

Sep 7th, 2013

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Sep 1st, 2013
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Sep 1st, 2013
Dec 6th, 2016
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