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.
Battery Charger
The hybrid battery charger is a serviceable assembly containing several micro-processors, two separate high voltage chargers and a single low voltage charger. It is mounted behind the passenger's side headlamp assembly and is flash programmable, communicating on both GMLAN and the High Voltage Energy Management Expansion bus. Engine coolant (DexCool) is used as a cooling medium to ensure that the charger does not exceed its maximum designed operating temperature. The low voltage charger is used to ensure that the 12 V battery does not become depleted during a charge event, while one the high voltage chargers is used with a 120 V charge source and both are used with a 240 V charge source.
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.
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