my 2005 hummer h2 sut idles up and down in park and at stops it does the same with a slight foward******** motion at times
Mar 7, 2011 at 4:12 PM
05 hummer sut idle problems
BOSSDAWG34
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- 1 POST
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Is there a check engine light, or does it have an aftermarket air filter. Have you tried cleaning the throttle plate? Another check would be fuel trim values. If they are indicating lean conditions, the intake manifold gaskets may be leaking.
Mar 7, 2011 at 9:08 PM
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