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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - 4.3L >> Diagnostic Tests >> DTC P0503: Vehicle Speed Sensor Erratic (A/T) >> Diagnostic Aids

Diagnostic Aids

Inspect for ABS DTCs. A faulty ABS condition may contribute to setting DTC P0503.

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