OEM 2006 Chevrolet Silverado 1500 Intake Manifold

2006 Chevrolet Silverado 1500 Parts Questions & Experts Answers

• Q: How to replace the upper intake manifold on 2006 Chevrolet Silverado 1500?

  A: The upper Intake Manifold replacement starts with fuel pipes/hoses removal followed by cruise control cable separation from throttle lever and accelerator control cable bracket. Additionally detach the accelerator cable from throttle body lever and accelerator control cable bracket. Start by disconnecting the electrical connectors that power both the a/c compressor clutch and the a/c pressure switch. After that disconnect the engine wiring harness clip from the accelerator control cable bracket and remove the bracket nuts. Remove the throttle body accelerator control cable bracket with its attached cables before moving it aside. Begin removal by unplugging the signals for throttle position (TP) sensor , idle air control (IAC) motor , and control port injector module then bolt the engine wiring harness clip from the bracket. Next disconnect the evaporative emission (EVAP) canister purge solenoid valve and manifold absolute pressure (MAP) sensor connectors followed by removing the evap canister harness from the purge solenoid valve and the engine wiring harness bracket nuts. Thoroughly remove the engine wiring harness bracket, ground nut, ground wire, and rear bracket nut from the evap canister purge solenoid valve while also extracting the stud securing the engine wiring harness bracket from the rear of the right cylinder head. Start by shifting the engine wiring harness out of the way before removing the PCV Valve Hose and power Brake Booster Vacuum Hose and accelerator cable bracket nuts together with the accelerator cable bracket. First separate the Intake Manifold - upper studs, the front two throttle body studs and the Intake Manifold - upper before discarding all gaskets, o-ring seals from the fuel meter body, pcv valve cover and essential components. Check the Intake Manifold - upper for cleanliness before conducting visual inspections. When installing these components, use gm p/n 12345382 threadlock (Canadian P/N 10953489) on the threads of the purge solenoid valve and evap canister purge solenoid valve studs and torque them to 10 nm (89 inch lbs.). Put clean engine oil on a new MAP Sensor seal then install the MAP Sensor and new Throttle Body Gasket before sliding in the throttle body. To reuse the rear throttle body stud apply threadlock gm p/n 12345382 (Canadian P/N 10953489) and torque it to 9 nm (80 inch lbs.). Begin by installing a new o-ring seal to both the pcv cover and power brake booster vacuum fitting followed by new o-ring seals to the fuel meter body and upper Intake Manifold gasket before adding the Intake Manifold - upper. Users must apply threadlock gm p/n 12345382 (Canadian P/N 10953489) to old throttle body/Intake Manifold studs before installing front throttle body studs and upper Intake Manifold studs to a torque specification of 9 nm (80 inch lbs.). After tightening the accelerator cable nuts to 12 nm (106 inch lbs.) attach the power Brake Booster Vacuum Hose along with the PCV Valve Hose. Position the engine wiring harness and bracket before installing the engine wiring harness bracket stud and nut which must be tightened to 25 nm (18 ft. Lbs.) along with the 9 nm (80 inch lbs.) nut configuration finally finish with the ground nut and wire at 16 nm (12 ft. Lbs.). The evap canister harness requires connection to the purge solenoid valve before reattaching electrical connectors to all items including evap canister purge solenoid valve , map sensor , tp sensor , iac motor , and control port injector module . Fasten the engine wiring harness clip bolt at 9 nm (80 inch lbs.) before placing the bracket and cables into position and securing the accelerator control cable bracket to the throttle body with bracket nuts tightened to 9 nm (80 inch lbs.). Reinstall the a/c compressor clutch alongside the a/c pressure switch while installing the engine wiring harness clip to the accelerator control cable bracket followed by cable connection to both the lever and throttle body. Cruise control cable installation can proceed thereafter with fuel pipe/hose placement as the final step.