How do you adjust the parking brake on a Chevy Silverado 3500 diesel 2003?

To adjust the parking brake on a 2003 Chevy Silverado 3500 diesel, start by ensuring the vehicle is on a flat surface and the rear wheels are chocked. Locate the parking brake adjustment lever or cable under the vehicle, typically near the rear axle. Tighten the adjustment nut until the parking brake engages firmly with a few clicks when pulled, but ensure it doesn’t drag when released. Finally, test the parking brake by applying it and checking if the vehicle holds in place.