What safety precautions should you follow when inspecting or repairing the driveline?

• A. None are required
• B. Work with the engine running to test operation
• C. Secure the vehicle, chock wheels, use jack stands, disconnect the battery if near electrical components, and relieve stored energy
• D. Only wear gloves

Answer: (C)

The safety rule here is to immobilize the vehicle and manage any stored energy before you start working on the driveline. Start by securing the vehicle so it cannot move, then chock the wheels to prevent rolling. If you lift the vehicle, support it with jack stands rather than relying on a jack alone, so there’s no chance it will fall while you’re under or near the driveline. Disconnect the battery if you’ll be close to electrical components or wiring, to prevent shocks or an accidental engine start. Relieve stored energy so nothing can snap, twist, or release suddenly as you work—this includes any tension in springs or torsional energy in the driveshaft and related components, and any stored hydraulic pressure in lines if applicable. These steps protect you from unexpected movement, electric shocks, or injuries from a sudden release of energy. Simply wearing gloves isn’t enough, and keeping the engine running during inspection is dangerous because movement and energy release can occur even with the engine on.