K 3500 Truck 4WD V8-393 6.5L DSL Turbo VIN S (1995)
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Glow Plug Relay: Description and Operation
Glow Plug Relay
The glow plug relay is mounted at the rear of the left cylinder head. It is a solid state device which operates the glow plugs. The Powertrain
Control Module (PCM) uses B+ signal to control the solid state circuitry of the glow plug relay.