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Chevrolet
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2002
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Blazer 4D Utility, 4WD, Part Time
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Repair and Diagnosis (Single Page)
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Accessories & Equipment
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Exterior Lights
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Lighting Systems
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Diagnostic Information & Procedures
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DTC B1397: 5 Volt Reference Output Circuit Is Less Than 4.75 Volts Or Shorted To Ground
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Action Taken When DTC Sets
Action Taken When DTC Sets
The daytime running lamps (DRL) feature will not operate.