Installation 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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NOTE:
The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.

Exhaust Manifold Gasket (2) - Install NEW
Exhaust Manifold (1) @ Right Side - Install
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Exhaust Manifold Bolt (1) - Install NEW [3x]
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Exhaust Manifold Bolt (1) - Install NEW [3x]
Exhaust Manifold Bolt - Tighten - Exhaust Manifold Installation - Right Side
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Exhaust Front Pipe Nut (1) @ - Right Side Install [3x] - Catalytic Converter Replacement (LWN) , or Catalytic Converter Replacement (L96, LC8)
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Oil Level Indicator Tube- Lower (1) - Install - Oil Level Indicator Tube Replacement (Upper) , or Oil Level Indicator Tube Replacement (Lower)
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Heater Inlet Hose (2) @ Water Pump - Install - Heater Inlet Hose Replacement (LWN with C69) , or Heater Inlet Hose Replacement (LWN Auxiliary Heater Inlet Hose) , or Heater Inlet Hose Replacement (LWN Water Pump Inlet Pipe to Heater Inlet and Outlet Pipe) , or Heater Inlet Hose Replacement (LWN without K08 Engine Coolant Thermostat to Heater Inlet and Outlet Pipe) , or Heater Inlet Hose Replacement (LWN without C69) , or Heater Inlet Hose Replacement (LV1 without C69) , or Heater Inlet Hose Replacement (LV1 Auxiliary Air Conditioning Evaporator Front Tube to Heater Core Inlet Tube with C69) , or Heater Inlet Hose Replacement (L96, LC8 Heater Water Flow Control Valve to Heater Core Inlet Tube) , or Heater Inlet Hose Replacement (L96, LC8 Water Pump Housing to Heater Water Flow Control Valve) , or Heater Inlet Hose Replacement (L96 Heater Core Inlet Tube to Auxiliary Heater Inlet and Outlet Pipe)
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Heater Outlet Hose (2) @ Water Pump - Install - Auxiliary Heater Outlet Hose Replacement (L96, LV1 Auxiliary Air Conditioning Evaporator Front Tube to Water Pump with C69)
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Radiator Outlet Hose (2) @ Water Pump - Install - Radiator Outlet Hose Replacement (LWN) , or Radiator Outlet Hose Replacement (LV1) , or Radiator Outlet Hose Replacement (L96, LC8)
Spark Plug Wire-Left Side @ Spark Plug - Install [4x] - Spark Plug Wire Replacement
Engine Coolant Fan Lower Shroud - Install - Engine Coolant Fan Lower Shroud Replacement (LWN) , or Engine Coolant Fan Lower Shroud Replacement (LV1) , or Engine Coolant Fan Lower Shroud Replacement (L96, LC8)
Inspect the exhaust system for leaks.
Engine Cover - Install - Engine Cover Replacement