P0C76 GMC - Hybrid/EV Battery System High Voltage Present

P0C76 GMC Possible Causes

• Faulty Starter Generator Control Module
• Starter Generator Control Module harness is open or shorted
• Starter Generator Control Module circuit poor electrical connection

How is the P0C76 GMC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P0C76 GMC code

Labor: 1.0

The cost to diagnose the P0C76 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

• Engine Light ON (or Service Engine Soon Warning Light)

P0C76 GMC Meaning

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.
The generator control and battery module assembly contains a high voltage contactor. The high voltage contactor allows the high voltage DC batteries to be connected to the vehicle and safely contain the high voltage DC within the generator control and battery module assembly. The high voltage contactor is connected in series with the positive side of the DC voltage potential of the high voltage battery. The hybrid powertrain control module supplies ground to the control circuit of the high voltage contactor to close.

More Information

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Repair Importance Level:3 Repair Difficulty Level:3