LEMON Manuals
: Even more car manuals for everyone: 1960-2025
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Cadillac
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1990
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Seville Base, 440T4/ME9
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes
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ECM Trouble Code Charts
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ECM Code EO63: Vehicle Speed/Set Speed Difference Too High
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Failure Conditions:
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Failure Conditions:
Vehicle speed 20 MPH greater than or less than set speed for .5 second.