* Cab style: Regular cab, extended cab, crew cab (if offered in '89, which I'm not certain about for that specific year) all had different weights.
* Engine: Different engines (e.g., a V6 vs. a big-block V8) added considerable weight.
* Transmission: Automatic vs. manual transmissions also affected weight.
* Options: Features like power windows, air conditioning, and added equipment all increased the curb weight.
* Axle ratio: Different gear ratios in the rear axle could slightly change the overall weight.
To find the curb weight for a *specific* 1989 Chevy dually, you'd need to locate the vehicle's original sticker (often found in the glove box or owner's manual) or consult a detailed specifications guide from that year, possibly found online through sites specializing in classic vehicle information or through a Chevy parts database.
