FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Car repair manuals for everyone.
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Chevy Truck
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1999
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Express 1 Ton Van V8-5.7L VIN R
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Power Enrichment
Power Enrichment
(Active/Inactive)
The Power Enrichment parameter indicates if the Power Enrichment mode is active. Power enrichment fueling is entered during high engine load operation to provide for maximum engine output.