LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L >> Repair Instructions >> Glow Plug Relay Replacement (Federal) >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

CAUTION: Refer to BATTERY DISCONNECT CAUTION .
  1. Remove the negative battery cables.
  2. Release the wiring harness connector at the glow plug relay.
  3. Remove the glow plug wiring harness nuts and harness.
    Fig 1: Glow Plug Relay Wiring Harness Connector, Glow Plug Wiring Harness & Nuts (Federal)
    G01599605Courtesy of GENERAL MOTORS CORP.
  4. Remove the relay mounting nuts.
    Fig 2: Glow Plug Relay Mounting Nuts (Federal)
    G01599606Courtesy of GENERAL MOTORS CORP.
  5. Remove the glow plug relay by lifting the glow plug off the mounting studs.
    Fig 3: Glow Plug Relay (Federal)
    G01599607Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals