Operation CHARM
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1982
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Riviera V6-252 4.1L
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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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EGR Valve
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Technical Service Bulletins
EGR Valve: Technical Service Bulletins
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Engine Controls - Heavy Chuggle, Surge at 35 to 55 MPH