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Home >> GMC >> 2001 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L (L65) (Introduction) >> Repair Instructions >> Glow Plug Relay Replacement (Federal) >> Installation Procedure

Installation Procedure

    Fig 1: Glow Plug Relay & Mounting Studs
    GM26782Courtesy of GENERAL MOTORS CORP.
  1. Install the glow plug relay on the mounting studs.
    2. Fig 2: Glow Plug Relay Mounting Nuts
    GM26781Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the glow plug relay mounting nuts.

    Tighten:  Tighten the nuts to 42 N.m (31 lb ft).

    3. Fig 3: Glow Plug Relay Wiring Harness Connector
    GM26780Courtesy of GENERAL MOTORS CORP.
  3. Install the wiring harness connector to the relay.
  4. Install the glow plug wiring harness and nuts.

    Tighten:  Tighten the nuts to 5 N.m (44 lb in).

  5. Install the negative battery cables.


    Fig 1: Glow Plug Relay, Mount & Bolts
    GM365439Courtesy of GENERAL MOTORS CORP.
  1. Install the glow plug relay (1) on the mounting bracket (3).
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the glow plug relay mounting bolt (4).

    Tighten:  Tighten the mounting bolt to 22 N.m (16 lb ft).

    3. Fig 2: Glow Plug Relay
    GM365417Courtesy of GENERAL MOTORS CORP.
  3. Install all three wiring harness connectors to the relay (1).
  4. Install the glow plug battery feed nut and wire.

    Tighten:  Tighten the nut to 4.5 N.m (40 lb in).

  5. Install the upper intake manifold cover bolts to 11 N.m (97 lb in).
  6. Install the negative battery cables.
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