Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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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 P0562 (ECM)CIRCUIT/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)
- Ignition OFF, disconnect the harness connectors at the ECM.
- Ignition OFF and scan tool disconnected, open and close the driver door, and wait 1 minute. Test for less than 5 Ξ© between the ground circuit terminals listed below and ground:
- 4.3L terminal 73 X2.
- V8 gas engines terminal 73 X1.
- 6.6L terminals 2-4 and 6 X2.
- If greater than the specified range, test the ground circuit(s) for an open/high resistance.
- Verify that a test lamp illuminates between the B+ circuit terminals listed below and ground.
- 4.3L terminals 19 and 73 X1.
- V8 gas engines X1 terminals 19 and 47 X1.
- 6.6L terminal 77 X1 and terminals 1-3-5 X2.
- If the test lamp does not illuminate, test the Ignition circuits for a short to ground or an open/high resistance.
- If all circuits test normal, replace the ECM.
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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.