K 1500 Suburban 4WD V8-6.5L DSL Turbo VIN F (1999)
Glow Plug Relay: Description and Operation
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 PCM uses a ignition voltage signal to control the solid state circuitry of the glow plug relay.
