Removal Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

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Oil Filler Tube(4) - Remove - Oil Filler Tube Replacement
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Auxiliary Heater Inlet and Outlet Hose Clip Nut(1) - Remove
Oil Level Indicator Tube Bracket Bolt(2) - Remove
Oil Level Indicator Tube Bolt(3) - Remove
Oil Filler Tube Bracket(4) - Remove
Vacuum Pump Pipe - Remove - Vacuum Pump Pipe Replacement
Fuel Injector Deadener - Remove - Fuel Injector Deadener Replacement
Fuel Injector - Remove - Fuel Injector Replacement
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Generator Bracket(3) - Remove - Generator Bracket Replacement (Diesel)
Camshaft Position Sensor - Remove - Camshaft Position Sensor Replacement
Disconnect and reposition the coolant heater cord as needed. Coolant Heater Cord Replacement (LWN) , or Coolant Heater Cord Replacement (LV1)
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Electrical Connector(1) - Disconnect[3x]
Wiring Harness Retainer(2) - Remove
Auxiliary Heater Inlet and Outlet Hose Clip Nut(3, 4, 5) - Remove
Reposition brackets (6) and wiring harness (7) as needed.
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Timing Belt Front Cover Bolt(1) - Remove[3x]
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NOTE:
The valve rocker arm cover bolts and studs are retained in the rocker arm cover, fully loosen the bolts to disengage them from the cylinder head.

Valve Rocker Arm Cover Bolt(1) - Loosen[8x]
Valve Rocker Arm Cover Stud(2) - Loosen[10x]
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NOTE:
Squeeze as indicated by the arrows to disengage then pull the PCV heater away from the air cleaner outlet duct.

Positive Crankcase Ventilation Heater(1) - Remove
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NOTE:
Ensure that the complete valve rocker arm cover gasket (2) is removed with the valve rocker arm cover.

Valve Rocker Arm Cover(1) - Remove
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Valve Rocker Arm Cover Gasket(1, 2) - Remove and DISCARD
Valve Rocker Arm Cover - Clean and inspect - Valve Rocker Arm Cover Cleaning and Inspection
Transfer components as necessary.