Chevrolet Silverado 3500 HD (C/K-30/31) from 2020 to 2024

Car wiring diagrams are essential for diagnosing electrical issues, installing new components, or customizing a vehicle’s electronics. Haynes DIY's detailed wiring diagrams provides clear, accurate guidance, making complex systems easier to understand and troubleshoot for both professionals and DIY enthusiasts.

Haynes DIY puts you in control of the routine service and maintenance tasks that support your car's performance, reliability and safety. Carrying out regular maintenance checks, especially on engine, brakes and fluids, helps prevent wear and tear and helps to avoid expensive repairs

Haynes DIY Online Manuals are your ultimate workshop assistant, offering detailed guidance, diagrams, and videos to make repairs and maintenance straightforward.

Accessible on any device, they put expert knowledge right at your fingertips, so you can tackle projects with confidence and keep your car in top condition.

Videos are a great way to learn more about looking after your car. In addition to comprehensive data, diagrams and written tutorials, a wide range of instructional videos are available to view. Understand your job quickly and learn the best way to tackle each one.

Identifying the cause of a technical, electrical or mechanical fault can be tricky. The Haynes DIY Fault Finder takes the mystery out of diagnosing an issue with hundreds of your car's most common issues included in its interactive guide.

It's simple to use - simply log into the product in your Haynes account and enter your issue in plain English to receive a range of suggested resolutions.

Going on a road trip? Tackle all the essential prep ahead of time and avoid a breakdown. Off the road? The search and diagnosis tools will help you identify the right fixes quickly and get back to work. With 10-times more coverage than a printed book and thousands of tasks covered, Haynes DIY is a one-stop solution to caring for your car.