FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
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Car repair manuals for everyone.
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Chevy Truck
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1999
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S10/T10 P/U 4WD V6-4.3L VIN X
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Repair and Diagnosis
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Powertrain Management
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Emission Control Systems
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Exhaust Gas Recirculation
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Description and Operation
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Purpose
Purpose
The
Exhaust Gas Recirculation
(EGR)
system lowers the NOx (Oxides of Nitrogen) emission levels created by the high combustion temperatures.