Where is abs module on 2001 silverado 2500hd located?

On a 2001 Silverado 2500HD, the ABS module is typically located near the brake master cylinder on the driver's side of the engine compartment. It's mounted on the frame or firewall and is connected to the brake lines. You may need to remove some components for better access, but it should be easily identifiable by its wiring harness and hydraulic connections.