Operation CHARM
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GMC Truck
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1992
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S15/T15 2WD P/U L4-151 2.5L
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Repair and Diagnosis
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Lighting and Horns
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Backup Lamp
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Testing and Inspection
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Troubleshooting Hints
Troubleshooting Hints
1.
Check condition of TURN-B/U Fuse. If fuse is blown, locate and repair source of overload. Replace fuse.