This bulletin applies to 2006-2012 Chevy Canyon pickups, 2005-2009 Trailblazers, 2006-2012 GMC Canyon, 2005-2009 GMC Envoy and 2006-2010 Hummer H3 vehicles, any of which are equipped with a 2.8L, 2.9L, 3.5L, 3.7L or 4.2L inline engine.

On “rare occasions,” a SES light may illuminate, along with DTCs P0105, P0106 and/or P0506. The customer may also have an idle complaint. This may be due to excessive carbon buildup in the throttle body.

Clean the throttle body bore and plate and clean the induction surfaces. Do not soak the throttle body in solvent during cleaning, as this could damage the throttle body.