Charging System: Generator: Notes

WARNING: This page is about a different variant/trim than selected.

The charging system is a negative ground system. The generator is belt-driven by the engine accessory drive system. When the engine is started, the generator begins to generate AC current, which is internally converted to DC. This current is then supplied to the vehicle electrical system through the output (B+) terminal of the generator.

The generator system consists of the generator mounted on the top center of the engine. A 120-amp generator with a 2.72:1 pulley ratio is standard. An extra heavy-duty option is available which includes a 155-amp generator with a 2.72:1 pulley ratio. A super heavy-duty option is also available which includes a 225-amp generator with a 3.00:1 pulley ratio.

The generators are similar in appearance and use the same connectors, making them interchangeable, although wiring lengths vary so a wiring change may be desired. Identification between the different generators can be carried out by referring to the generator engineering number and the parts catalog.

The set voltage varies with temperature and is typically higher in cold temperatures than in warm temperatures. This allows for better battery recharge in the winter and reduces the chance of overcharging in the summer.