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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> Proactive Alert Identifier SAC002 >> Circuit/System Testing

Circuit/System Testing

  1. Verify the battery cable connections are clean and tight.
  2. Verify Voltage is between 12.0 - 15.0 V
    • Go to next step: If within the specified range 
  3. Test for less than the 0.5 V drop between the positive battery cable at the battery and the positive battery cable at the M64 starter motor as the ignition is placed in the CRANK/START position.
    • If greater than 0.5 V 

      Replace the positive battery cable.

    • Go to next step: If less than 0.5 V 
  4. Test for less than 0.5 V drop between the negative battery cable and the M64 starter motor case as the ignition switch is placed in the CRANK/START position.
    • If greater than 0.5 V 

      Replace the negative battery cable.

    • Go to next step: If less than 0.5 V 
  5. Replace the Battery.
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