OEM 2004 GMC Envoy Intake Manifold

2004 GMC Envoy Intake Manifold Parts and Q&A

• Q: How to replace the intake manifold on 2004 GMC Envoy?

  A: It is an opportunity to change the Intake Manifold, i.e., start by detaching the Throttle Body, the battery box, the oil level indicator and tube, and disconnecting the brake booster hose for the brake booster. Next, remove the manifold absolute pressure (MAP) sensor electrical connector and MAP Sensor wiring harness retainer from Intake Manifold. Remove the positive crankcase ventilation (PCV) dirty air tube from the camshaft cover, disconnect the generator and the engine wiring harness retainer from the Intake Manifold. Pull off the two bolts on the top that attach the engine wiring harness bracket to the Intake Manifold, lift and support the vehicle sufficiently to be able to access the remaining components through the wheelhouse, remove the left front wheel and wheelhouse liner, then. Unhook the wiring harness retainers for Battery Cable, engine (4, 6) and MAP Sensor then remove the remaining engine wiring harness bracket and pull the bracket out through the wheelhouse opening and removing the bolt. Lower the vehicle, unbolt the Intake Manifold bolts, and peel off the Intake Manifold from the cylinder head. Replace old seal and mask off the open ports to the cylinder head to prevent the entry of foreign objects into the engine. Clean and inspect the Intake Manifold first before fitting a new seal into the Intake Manifold groove and fitting it onto the cylinder head. Lift up the vehicle once more to reach Intake Manifold bolts, engine wiring harness bracket bolts, and wiring harnesses. Install the Intake Manifold bolts by tightening them from within to 10 nm (89 inch lbs) and put the engine wiring harness bracket onto the engine and harnesses then put the bracket present onto the said bracket by installing bracket bolts that must be tightened to 10 nm (89 inch lbs). Snap retention for the wiring harnesses: battery cable, engine(4,6), and MAP Sensor, onto the engine wiring harness bracket, then install the left front wheelhouse liner, and left front wheel before lowering the vehicle. Connect the engine wiring harness retainer to the Intake Manifold, attach the generator, and attach the pcv dirty air tube to the camshaft cover. Lastly, connect begin the MAP Sensor wiring harness retainer and electrical connector, reconnect the brake booster hose, install the oil wish indicator and tube, battery box, finish installing the Throttle Body.