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 MANUALSGMC2013SAVANA H1500, VAN CARGOREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERBATTERY, CHARGING SYSTEM AND STARTING SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURES (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)CHARGING SYSTEM TESTCIRCUIT/SYSTEM TESTING (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)

2013 GMC Savana H1500, Van Cargo

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

2013 GMC Savana H1500, Van CargoSECTION Circuit/System Testing (Battery, Charging System And Starting System)

NOTE:

You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Ignition OFF.
Test for less than 2 Ω between the G13 Generator housing and battery negative terminal.
- If 2 Ω or greater
  Repair the open/high resistance in the circuit.
- If less than 2 Ω
Verify a test lamp illuminates between the G13 Generator B+ circuit terminal 1 X2 and ground.
- If the test lamp does not illuminate and the circuit fuse is good
1. Remove the test lamp and disconnect the B+ cable at the G13 Generator.
2. Test for less than 2 Ω in the B+ circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
1. Remove the test lamp, disconnect the battery negative cable, and disconnect the G13 Generator B+ cable.
2. Test for infinite resistance between the B+ circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, test or replace the G13 Generator.
- If the test lamp illuminates
Test or replace the G13 Generator.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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