K 3500 Truck 4WD V8-393 6.5L DSL Turbo (1993)
2. Then cycle; ON for about 1.5 seconds, OFF for about 4.5 seconds, and continue to cycle 1.5 ON/4.5 OFF, for a total duration (including the
initial 4 to 6 seconds) of about 20 seconds.
If the engine is cranked during or after this sequence, the glow plugs will cycle ON/OFF for a total duration of 25 seconds after the engine
control switch is returned from the crank position, whether the engine starts or not. the engine does not have to be running to terminate the
glow plug cycling.
All the times shown above are approximate because they vary with initial engine temperature. The initial ON time and cycling ON/OFF times vary
also with system voltage and/or temperature. Lower temperatures cause longer duration of cycling.
LOCATION
The controller is mounted at the rear of the left cylinder head on two 10 mm studs.
