Sierra 3500 Denali 4WD V8-6.0L (2011)
21. Use the following procedure in order to inspect for leaks:
1. Turn the ignition ON, with the engine OFF, for 2 seconds.
2. Turn the ignition OFF for 10 seconds.
3. Turn the ignition ON, with the engine OFF.
4. Inspect for fuel leaks.
22. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (See: Engine, Cooling and
Exhaust/Engine/Intake Manifold/Service and Repair).
Evaporative Emission Line Replacement - Chassis (1500 Extended/Crew Cab)
Evaporative Emission Line Replacement - Chassis (1500 Extended/Crew Cab)
Removal Procedure
Note: Clean all fuel and evaporative emission (EVAP) lines connections and surrounding areas prior to disconnecting the lines in order to avoid
possible fuel and/or EVAP system contamination.
1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief (CH-48027) (See: Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure
Release/Service and Repair)Fuel Pressure Relief (Without CH-48027) (See: Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure
Release/Service and Repair).
2. Disconnect the engine evaporative emission (EVAP) line (1) quick connect fitting from the chassis EVAP line. Refer to Plastic Collar Quick
Connect Fitting Service (See: Fuel Delivery and Air Induction/Fuel Line Coupler/Service and Repair/Plastic Collar Quick Connect Fitting
Service).
3. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service (See: Fuel Delivery
and Air Induction/Fuel Line Coupler/Service and Repair/Metal Collar Quick Connect Fitting Service).
4. Cap the fuel rail and EVAP pipes.
5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
6. Unbolt and reposition the front propeller shaft, if required. Refer to Front Propeller Shaft Replacement (See: Transmission and
Drivetrain/Drive/Propeller Shafts, Bearings and Joints/Drive/Propeller Shaft/Service and Repair/Front Propeller Shaft Replacement).
7. Unbolt and reposition the brake pressure modulator valve (BPMV). Refer to Brake Pressure Modulator Valve Replacement (See: Brakes and
Traction Control/Antilock Brakes / Traction Control Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair/Brake Pressure
Modulator Valve Replacement).
