To be certain, I recommend:
* Checking your owner's manual: This is the best source for the exact location on your specific vehicle.
* Visually inspecting the driver's side of the engine block: Look for a heavy-duty cord emerging from near the bottom of the engine. Be cautious when looking near hot engine components.
* Looking near the front bumper/grille area: The cord may run along the frame and up into the engine bay, so you might see the cord entering there.
If you can't locate it after checking these areas, you might consult a Chevrolet dealership or a qualified mechanic.