Question about 2006 Chevrolet Impala
Slight knocking sound can be heard when idling but is worse in drive
Posted by Anonymous on
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Posted on Jan 02, 2017
this trucks have very coming problem with the injectors stuck open or close, and some times they just works great and some does not, dealer has an updated injector assembly, i recomend you to install this update and spark plugs and plug wires, if you had replace plugs and wires recently just redo the spark plugs with the injectors
Posted on Jun 15, 2008
Hello, I see you have a trailblaber with a knocking noise. It sounds like you have an electric fan clutch issue. Believe it or not your vehicle has an electric fan clutch. It looks just like the older non-electric but if you look on the driver side of the fan shroud that is the wire connector you see. It is an exspensive part just for the clutch but thats exactly what you are describing. It doesn't get louder just fast with rpms. Please rate my answer, Thank you
Posted on Mar 06, 2009
Diagram 9-5 on this page:
Posted on Nov 14, 2009
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