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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P063: Set Vs Vehicle Speed Difference >> Notes On Intermittents
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Notes On Intermittents

If Code P063 is setting intermittently, make sure owner is not overrunning set speed by more than 20 MPH. This code will not be caused by vacuum leaks or vacuum supply problems. It can only be set by the vehicle exceeding the set speed by 20 MPH.

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