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.
2014 Chevrolet VoltFACTORY OEM SERVICE PROCEDURE
Circuit/System Verification
- Vehicle in Service Mode, verify no OnStar DTC's are set.
- If any OnStar DTC's are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no OnStar DTC's are set
- If any OnStar DTC's are set
- Verify the scan tool Telematics Communication Interface Control Module/Data Display/GPS Data/Second parameter is incrementing.NOTE: The vehicle needs to be in an open, outside area where a cellular call can be successfully placed and GPS data can be received from satellites.
- If seconds are not incrementing
- If seconds are incrementing
- Replace the K114B Hybrid/EV Powertrain Control Module 2.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.