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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Description And Operation) >> Description and Operation >> Glow Plug System Description >> Glow Plugs

Glow Plugs

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

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.

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