OEM 2007 Buick Lucerne Intake Manifold

2007 Buick Lucerne Intake Manifold Parts and Q&A

• Q: How to replace the lower intake manifold on 2007 Buick Lucerne?

  A: In order to change the lower Intake Manifold, take off the upper Intake Manifold, drive belt tensioner, generator rear brace bolt and nut, and the generator rear brace. Next, remove the bolt and nut of the exhaust gas recirculation pipe, then the egr valve outlet pipe. Reposition the hose clamp at the Thermostat Housing using the hose clamp pliers (J 38185) and remove the radiator inlet hose from the Thermostat Housing. Proceed with the removal of the generator brace bracket bolts and the generator brace bracket and spacer as well as the lower Intake Manifold bolts to remove the lower Intake Manifold itself, and its lower Intake Manifold seals and gaskets. When changing the lower Intake Manifold, first, detach the engine coolant temperature (ECT) sensor, the Thermostat Housing bolt and stud, and the Thermostat Housing with the Thermostat. For the installation, begin and install the Thermostat and housing, and fasten the Thermostat Housing bolt/stud to 25 n.m (18 lb ft), and set the ect sensor, tightening to 23 n.m (17 lb ft). Clean the lower Intake Manifold sealing surface and before installing the lower Intake Manifold gaskets apply sealer the ends of the Intake Manifold seal, and install the seals. Next, install the lower Intake Manifold bolt by using applying a thread lock to the thread of the lower Intake Manifold bolt, and install the lower Intake Manifold bolt with 15 n.m (11 lb ft). Mount the generator brace bracket and spacer with generator brace bracket bolts; tighten these bolts to a torque of 50 n.m (37 lb ft). Replace the radiator inlet hose to Thermostat Housing, reset the hose clamp on the Thermostat Housing using the hose clamp pliers (J 38185), and install the egr valve outlet pipe and its bolt and nut and tighten to 25 n.m (18 lb ft). Lastly, install the generator rear brace and bolt and nut tightening to 50 n.m (37 lb ft), and then install drive belttensioner and upper Intake Manifold.