GM Service Manual Online
For 1990-2009 cars only

SMU - Discontinue Use of Sealer on Fuel Injection Line Fittings

Subject:Discontinue Use of Sealer on Fuel Injection Line Fittings

Models:2001-2007 Chevrolet Silverado
2003-2007 Chevrolet Kodiak
2001-2007 GMC Sierra
2003-2007 GMC TopKick
with 6.6L Duramax™ Diesel Engine (VIN 2 - RPO LLY)



This bulletin is being issued to revise various procedures involving fuel injection line fittings in the Engine Controls sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Be advised that the recommendation to apply a sealer on fuel injection line fittings has been discontinued.