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Removal & Installation (Calif.)

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cables. Loosen the outlet duct clamp at the upper intake manifold cover. Remove he upper intake manifold cover from the outlet duct. Remove the upper intake manifold cover. Remove the battery supply wiring harness nut and harness connector from the glow plug controller battery voltage supply post.
  2. Remove the glow plug wiring harness connectors from the glow plug controller. Remove the glow plug controller mounting bolt from the mounting bracket. Remove the glow plug controller from the mounting bracket. See Fig 1. To install, reverse removal procedure.
Fig 1: Locating Glow Plug Relay (Calif.)
G00079458Courtesy of GENERAL MOTORS CORP.
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