K 1500 Suburban 4WD V8-6.5L DSL Turbo VIN F (1999)
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Glow Plug: Description and Operation
These are 6-volt heaters (operated at 12 volts) that turn ON, when the ignition switch is turned to the run position, prior to starting the engine. They
remain pulsing 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 come ON during post
glows.