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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 6 (HYBRID ENERGY STORAGE SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P1AE5CIRCUIT/SYSTEM TESTING
2009 Chevrolet Tahoe Base, 4.8 C
Circuit/System Testing
2009 Chevrolet Tahoe Base, 4.8 CSECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Verify if DTC P2534 is set.
- If DTC P2534 is set, refer to DTC P2534 .
- Ignition OFF. remove the drive motor generator control module assembly sight shield.
- Disconnect the harness connector X1 at the drive motor generator power inverter module (PIM) assembly.
- Ignition ON, test for 4.9-5.1 volts between the contactor signal circuit terminal 4 X1 and ground.
- If less than the specified range, test the circuit for an open or a short to ground. If the circuit tests normal, replace the drive motor generator battery control module.
- If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the drive motor generator battery control module.
- If all circuits test normal, replace the PIM module.
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:
- • 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.