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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 976 (Engine Controls - 6.6L (Lb7) (Introduction)) >> Repair Instructions >> Glow Plug Relay Replacement (California Emissions) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  2. Loosen the outlet duct clamp at the upper intake manifold cover.
  3. Remove the upper intake manifold cover from the outlet duct.
  4. Remove the upper intake manifold cover.
    5. Fig 1: View Of Upper Intake Manifold Cover, Outlet Duct & Clamp
    GM813243Courtesy of GENERAL MOTORS CORP.
  5. Remove the battery supply cable nut (1) and cable from the glow plug relay battery voltage supply post.
  6. Disconnect the glow plug electrical connectors (2) from the glow plug relay (3).
  7. Remove the glow plug relay bolt (6).
  8. Remove the glow plug relay (3) from the bracket (4).
    9. Fig 2: Glow Plug Relay Components
    GM741153Courtesy of GENERAL MOTORS CORP.
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