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Fig. 67: View Of Knock Sensor Wire Harness 1. Remove the intake manifold. Refer to Intake Manifold Replacement. 2. Gently pry up the rubber covers. 3. Disconnect the knock sensor electrical connectors.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 68: View Of Knock Sensors 4. Remove the knock sensors.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 69: View Of Engine Valley Cover, Gasket & Bolts 5. Remove the engine valley cover bolts. 6. Remove the engine valley cover and gasket. 7. Discard the old gasket.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 70: View Of Knock Sensor Oil Seals & Cover 8. Remove the knock sensor oil seals (1) from the cover (2). 9. Clean and inspect the engine valley cover. Refer to Engine Block Valley Cover Cleaning and Inspection. Installation Procedure IMPORTANT: All gasket surfaces should be free of oil or other foreign material during assembly.
2008 Hummer H2 2008 ENGINE Engine Mechanical - 6.2L - H2
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