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HOMESERVICE MANUALSGMC2010SAVANA SPECIAL 6.0 GREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERBATTERY, CHARGING SYSTEM AND STARTING SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURES (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)DTC B1517CIRCUIT/SYSTEM TESTING (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)
2010 GMC Savana Special 6.0 G

Circuit/System Testing (Battery, Charging System And Starting System)

2010 GMC Savana Special 6.0 GSECTION Circuit/System Testing (Battery, Charging System And Starting System)
  1. Ignition OFF, disconnect the harness connectors at the BCM.
  2. Ignition OFF, test for less than 3.0 Ξ© between the ground circuit terminal 9 X4 and ground.
    • If not within the specified range, test the ground circuit for an open/high resistance.
  3. Ignition On, verify a test lamp illuminates between the B+ circuits terminals listed below and ground.
    • Terminal 3 X3
    • Terminal 10 X4
    • If the test lamp does not illuminate, test the appropriate B+ circuit for a short to ground or an open/high resistance.
  4. If all circuits test normal, replace the BCM.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.