Operation CHARM
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GMC Truck
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1992
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Typhoon V6-262 4.3L Turbo
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Repair and Diagnosis
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Lighting and Horns
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Marker Lamp
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Description and Operation
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Rear
Rear
Voltage is supplied through the CRANK Fuse to the Light Switch at all times. With Light Switch in PARK or HEAD, voltage is supplied to the Tail, Marker, Endgate, Clearance and License Lamps.