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Chevy Suburban/Tahoe Rough Idle and Stalling
Having a problem with stalling. It usually happens after backing out of parking areas when vehical returns to idle while shifting from reverse to drive. It then become difficult to restart. Also during this issue if vehical doesn't stall it starts exibiting erratic idle. The vehical also seems to idle low 550rpm down to 400 and lower on occasion.
I have attempted to locate the idle air valve but it doesn't seem to have one in the location in the manual (on throttle body by altinator). I can only find what I believe is the Throttle position sensor in that location.
Vehical doesn't do this all the time but nore times than not and seems to be more often during cool/cold weather.
Any help or idea would be gratly appreciated.