* Engine: Different engines were offered, and each might have been paired with different transmissions and axle ratios. A V6 will likely have a different ratio than a V8.
* Transmission: Automatic or manual transmissions will have different gear ratios internally. Even within automatic transmissions, different transmission types (e.g., 4L60E, 4L80E) will have varying ratios.
* Rear Axle Ratio: This is the crucial factor determining the final drive ratio. Common axle ratios for the 2002 Silverado ranged from 3.42 to 4.10, and even higher ratios were available depending on the truck's configuration (e.g., towing package). This is the ratio of the driveshaft rotations to wheel rotations.
To find the gear ratio of your specific 2002 Chevy Silverado, you need to check:
1. The sticker on the driver's side doorjamb: This sticker usually lists the axle ratio (e.g., 3.73).
2. The owner's manual: While it might not explicitly state the axle ratio, it might provide information on the transmission type and could reference the available axle ratios for that model year and configuration.
3. The vehicle's build sheet (if available): This would provide very detailed specifications, including the axle ratio.
4. The manufacturer's website (unlikely): This usually has limited detail on older vehicles.
5. Check the differential tag: Located on the differential itself, usually on the top or side. This will provide the axle ratio.
Without knowing your specific Silverado's engine, transmission, and intended use (tow package etc.), it's impossible to give you a definitive gear ratio.
