Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Remove the turbocharger. Refer to Turbocharger Replacement .
Remove the exhaust gas recirculation (EGR) valve. Refer to Exhaust Gas Recirculation (EGR) Valve Replacement in Engine Controls - 6.6 L.
Disconnect the wire terminal from the intake air heater.
Remove the following fuel pipes and wiring harnesses:
- The main fuel pipes. Refer to Quick Connect Fitting(s) Service (Metal Collar) in Engine Controls - 6.6 L.
- The fuel junction block. Refer to Fuel Junction Block Replacement in Engine Controls - 6.6 L.
- The fuel hoses to the fuel injection control module (FICM) and the FICM wiring harness. Refer to Fuel Injection Control Module Replacement in Engine Controls - 6.6 L.
- The fuel pipes to the left fuel rail. Refer to Fuel Rail Assembly Replacement - Bank 2 in Engine Controls - 6.6 L.
Remove the intake manifold tube bolts/nuts.

Fig 1: View Of Intake Manifold Tube, Gasket, Bolts & Nuts (Federal Emissions)

Courtesy of GENERAL MOTORS CORP.

Pull-up the intake manifold tube in order to remove.
Remove and discard the gaskets.
Remove the intake air heater from the intake manifold tube, if replacing the tube.
Clean the intake manifold tube in cleaning solvent and air dry.