OEM 2008 GMC Acadia Intake Manifold

2008 GMC Acadia Intake Manifold Parts and Q&A

• Q: How to replace the upper intake manifold on 2008 GMC Acadia?

  A: The first step to replace the upper Intake Manifold includes taking out the fuel injector sight shield and air cleaner outlet duct and Intake Manifold insulator. The technician would first pull the evaporative emissions (EVAP) canister purge line from its position then move it to a safe spot and proceed by disconnecting the pcv line at the Intake Manifold top. Start by disconnecting the Intake Manifold tuning valve's electrical connector after removing the Brake Booster Vacuum Hose and electronic throttle control (ETC) electrical connector. Remove the bracket retaining bolt which supports the engine harness then unplug the map sensor electrical connector. First install the retaining bolts of the upper intake then remove both the upper intake and gasket but throw away the gasket. To replace the upper Intake Manifold you must remove three components including the evap purge solenoid valve, Intake Manifold tuning valve, and Throttle Body. Position upper Intake Manifold gaskets onto the lower Intake Manifold before securing each one with fir tree retainers. Declare the upper Intake Manifold position before you threadlock the bolt threads and tighten the upper Intake Manifold bolts to 23 n.m (17 lb ft). Install the Throttle Body and both the Intake Manifold tuning valve and evap purge solenoid valve when doing upper manifold replacement. First attach the map sensor electrical connector followed by installation of the engine harness bracket retaining bolt and connector of the etc electrical connector . The service process includes joining the Brake Booster Vacuum Hose and connecting the Intake Manifold tuning valve electrical connector while also reconnecting the pcv line to the top of the Intake Manifold. When ending your work finish by connecting the evap canister purge line then add the Intake Manifold insulator followed by the air cleaner outlet duct and ending with the fuel injector sight shield.