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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Description And Operation) >> Description and Operation >> Glow Plug System Description >> Glow Plugs

Glow Plugs

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The glow plugs are heaters in each of the cylinders that turn ON, they are pulse-width modulated when the ignition switch is turned to the RUN position prior to starting the engine. The ECM remains pulsing the glow plugs a short time after starting, then are turned OFF.

A Wait to Start lamp on the instrument panel provides information on engine starting conditions. The Wait to Start lamp will not illuminate during post-start glow plug operation.