The front wheel speed sensor on a 2001 Chevy pickup truck is located
within the wheel hub assembly, at the back of the hub. It's integrated into the hub itself on most models, not a separate component bolted to it like on some older vehicles. You'll need to remove the wheel and brake caliper to access it.
To be absolutely certain, you should consult a repair manual specific to your year, make, and model of Chevy pickup. The exact location might vary slightly depending on the trim level and specific options. The manual will have diagrams and clear instructions.
