2011 Chevrolet Express 1500 Cargo Owner's Manual - Page 304

10-34 Vehicle Care Exhaust: . Among those acts presumed to constitute tampering are the acts listed below. Insulation: . Removal of the muffler and/or resonator. Removal of the exhaust pipes and exhaust pipe clamps. . 2. Firmly apply both the parking brake and the regular brake. See Parking Brake on page 9‑34. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts. 3. Try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer for service. Removal of the noise shields or any underhood insulation. Removal or rendering engine speed governor, if the vehicle has one, inoperative so as to allow engine speed to exceed manufacturer specifications. Removal of fan clutch, if the vehicle has one, or rendering clutch inoperative. Removal of the fan shroud, if the vehicle has one. Removal of the air cleaner silencer. Modification of the air cleaner. Engine: . Fuel Operated Heater (FOH) - Diesel Engine: . Removal of the muffler. Starter Switch Check { WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around the vehicle. Fan and Drive: . . Air Intake: . .