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.
- If replacing the intake manifold, transfer all necessary parts. Intake Manifold Assemble
- NOTE:
Ensure that all 3 gaskets are replaced when installing the intake manifold.
Install a NEW intake manifold gasket. (3)
- Install a NEW thermostat housing gaskets (1 and 2).
- NOTE:
Nuts (1) mount the engine coolant thermostat housing to the intake manifold and cylinder head. Hand start ALL nuts before final tightening sequence.
NOTE:Ensure the gasket (4) remains seated during intake manifold installation.
Intake Manifold(3) - Loosely install
- Intake Manifold Nut(2) - Loosely install[7x]
- Engine Coolant Thermostat Housing - Install - Engine Coolant Thermostat Replacement (LWN)
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Tighten in the sequence shown.
- First pass, tighten 1, 4, 6, 2, 3, 5 to 5 N. m (44 lb in).
- Final pass, tighten 1, 2, 3, 4, 5, 6, 7, 8, 9 to 12 N. m (106 lb in).
CAUTION:Refer to Fastener Caution .
- Exhaust Gas Recirculation Valve - Install - Exhaust Gas Recirculation Valve Replacement
- Fuel Injector Deadener - Install - Fuel Injector Deadener Replacement
Engine Wiring Harness Bracket(5) - Install[2x]
- Wiring Harness(4) - Reposition
- Engine Wiring Harness Bracket Nut(3) - Install[2x]
- Wiring Harness Retainer(2) - Install
- Electrical Connector(1) - Connect
Wiring Harness(1) - Connect
- Vacuum Pipe(2) - Install
- Fuel Injection Fuel Feed Pipe - Install - Fuel Injection Fuel Feed Pipe Replacement (Fuel Injector to Fuel Rail) , or Fuel Injection Fuel Feed Pipe Replacement (Fuel Pump to Fuel Rail)
- Throttle Body Assembly - Install - Throttle Body Assembly Replacement
- Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (Single Battery) , or Battery Negative Cable Disconnection and Connection (Dual Battery)