What is the gear ratio for a 1997 Chevy Suburban 1500 4x4?

There's no single gear ratio for a 1997 Chevy Suburban 1500 4x4. The gear ratio in the rear differential (and possibly the transfer case, depending on the specific 4x4 system) varied depending on the engine, transmission, and options chosen when the vehicle was built. To find the gear ratio for *your* specific Suburban, you need to check one of the following:

* The sticker on the driver's side doorjamb: This often lists the axle ratio. Look for something like "Axle Ratio: 3.73" or a similar notation.

* The owner's manual: This may specify the axle ratio.

* The build sheet (if you can locate it): This document will detail the specifications of your specific vehicle.

* The metal tag on the differential cover: This tag is often located on the differential cover itself and will provide the gear ratio. You'll likely need to get under the vehicle to see this.

Without knowing your specific Suburban's build details, it's impossible to give you the correct gear ratio. Common ratios for that era included 3.73, 4.10, and possibly others.