GM Service Manual Online
For 1990-2009 cars only

Fuel Rail Stop Bracket Installation Caution for Chevrolet Chevrolet W-Series Commercial W4 (W3500/W4500) 2006

Caution: The fuel rail stop bracket must be installed onto the engine assembly. The stop bracket serves as a protective shield for the fuel rail in the event of a vehicle frontal crash. If the fuel rail stop bracket is not installed and the vehicle is involved in a frontal crash, fuel could be sprayed possibly causing a fire and personal injury from burns.