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Home >> GMC >> 2003 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Engine Mechanical (Repair Instructions -- 1 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Engine Valley Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Gently pry up the rubber covers.
  3. Disconnect the knock sensor electrical connectors.
    4. Fig 1: View Of Rubber Covers
    GM832149Courtesy of GENERAL MOTORS CORP.
  4. Remove the knock sensors.
    5. Fig 2: View Of Knock Sensors
    GM309864Courtesy of GENERAL MOTORS CORP.
  5. Remove the engine valley cover bolts.
  6. Remove the engine valley cover and gasket.
  7. Discard the old gasket.
    8. Fig 3: View Of Engine Valley Cover, Gasket & Bolts
    GM65048Courtesy of GENERAL MOTORS CORP.
  8. Remove the knock sensor oil seals (1) from the cover (2).
    9. Fig 4: View Of Knock Sensor Oil Seals & Cover
    GM490851Courtesy of GENERAL MOTORS CORP.
  9. If required, clean and inspect the engine valley cover. Refer to Engine Valley Cover Cleaning and Inspection .
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