Replacement (California)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 GMC C3500 HD, and 2002 Chevrolet RV Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect negative battery cables. On vans, remove engine cover. See ENGINE COVER . On all models, remove the upper intake manifold cover by loosening the mounting bolts. Release all three wiring harness connectors at the glow plug relay. Remove the glow plug battery feed nut and wire. Remove the relay mounting bolt. Remove the glow plug relay.
- To install, reverse removal procedure. Tighten fasteners properly. See TORQUE SPECIFICATIONS . Ensure that the PCM electrical harness is properly routed to avoid contact with the engine cover during installation.