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1987
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Chevy Van G20, 5.0 H, Standard
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Repair and Diagnosis
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Engine Performance
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Check Engine Light Diagnostics - Non-ECM
Check Engine Light Diagnostics - Non-ECM
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Circuit Testing
Chart C-6HD-1, Air Management System 5.7L (Over 8500 GVW)
Service Engine Soon Light is On
Chart C-6HD-2, Air Management System 7.4L (Over 8500 GVW)
Service Engine Soon Light is On