OEM Chevrolet Suburban 2500 Intake Manifold

Chevrolet Suburban 2500 Intake Manifold Parts Questions & Experts Answers

• Manifold
  17113697
  Q: How to replace the intake manifold on Chevrolet Suburban 2500?

  A: For replacement of Intake Manifold, first loosen the clamp on the air cleaner sides and at the Throttle Body body and remove the air cleaner outlet duct. Loosen the Intake Manifold sight shield bolt, then remove the sight shield from the bracket, then the sight shield bracket and nuts. Relieve the fuel system pressure and disconnect the lines of the fuel feed and return lines. Vehicle harness clips disconnect from studs front of dash and wheelhouse splash panel. Remove the pressure cycling switch , surge tank switch , mass air flow (MAP) sensor. Reposition the engine harness branch on the topsurface of the engine and remove the connector position assurance (CPA) retainer at the ignition coil harness and disconnect the manifold absolute pressure(MAP) sensor, ignition coil harness and the engine coolant temperature (ECT) sensor. The parts to be removed include the engine harness bolts and studs, cpa retainer at the pioneer haul out coil harness, generator , injector harness , ignitors coil harness , throttle position (TP) sensor , electronic throttle control (Etc), and purge valve solenoid to be disconnected. Slide the engine harness to the driver side of the engine compartment, unplug the bypass valve vacuum hose from the Intake Manifold, and disconnect the exhaust gas recirculation (EGR) valve electrical connector. Loosen the bolts on the egr pipe on the egr adapter and reposition the egr pipe and discard the EGR Valve pipe gasket. Take out the fuel pressure regulator vacuum hose, and when replacing the Intake Manifold, remove the Fuel Rail studs and the Fuel Rail. Remove the Intake Manifold bolts but without prying under the gasket surface and remove the Intake Manifold, discard Intake Manifold; side gaskets; end seals. Before replacing the Intake Manifold, remove the splash shield, otherwise, bring the new Intake Manifold in place. Make sure that the splash shield does snap fit between the cylinder heads, replace the Intake Manifold with new end seals and side gaskets to the cylinder heads, but made sure to align the gasket tabs properly. Install the Intake Manifold gaskets with this side up stamped in an upward direction and then install the Intake Manifold. Apply threadlock gm U.S. P/N 12345382, canada P/N10953489 or equivalent to a minimum of eight threads of the Intake Manifold bolts, and install. Make sure to tighten the Intake Manifold bolts in a sequence, using four passes: first pass: 5 nm (44 inch lbs), second pass: 5 nm (44 inch lbs) third pass:10 nm (89 inch lbs), and last pass: 12 nm (106 inch lbs). Apply clean engine oil to the o-ring seals on the fuel injectors and then attach them to the spray tip of each fuel injector. If replacing the Intake Manifold, the Fuel Rail must be installed and the Fuel Rail studs should be tightened to 12 nm (106 inch lb). Mount the fuel pressure regulator vacuum hose, egr valve pipe gasket, and align the egr pipe; squeeze and tighten the egr pipe bolts to 30 nm (22 ft. Lbs.). Connect the EGR Valve electrical connector, and the bypass valve vacuum hose to the Intake Manifold. Shove the engine harness in the engine compartment and join the generator , injector harness , ignition coil harness , tp sensor , and etc as well as purge valve solenoid . Mount the cpa retainer at the ignition coil harness and install the engine harness bolt and studs. The bolt is to be tightened to 5 nm (44 inch lbs.), while the studs are to be tightened to 10 nm (89 inch lbs.) connect the MAP Sensor , ignition coil harness & ect sensor and over the engine set the engine harness branch on the top of the engine. Concert the pressure cycling switch , surge tank switch and maf sensor before connecting the engine harness clip to the wheelhouse splash shield and the clips to the studs on the front of the dash. Connect the fuel feed and return pipes attaching the engine sight shield bracket and nuts tighten the nuts 5 nm (44 inch lbs.) and install the sight shield to the bracket and tighten the Intake Manifold sight shield bolt to 10 nm (89-inch lbs.). Finally, take a look at the air cleaner outlet duct and tighten the clamps where the Throttle Body and air cleaner are located at a torque of 4 nm (35 inch lbs.).