1. Check the owner's manual. The owner's manual for your Trailblazer should have a section that contains wiring diagrams.
2. Search online. There are a number of websites that offer free wiring diagrams for vehicles. Some popular websites include:
- AutoZone
- RepairPal
- CarMD
3. Visit your local auto parts store. Many auto parts stores sell Haynes and Chilton manuals, which contain wiring diagrams for vehicles.
4. Purchase a subscription to an online repair manual service. Services such as AllData and Mitchell1 offer subscriptions that give you access to a variety of repair manuals, including wiring diagrams.
Once you have found a wiring diagram for your Trailblazer, it is important to read and understand it carefully before attempting any electrical repairs. If you are not comfortable reading and understanding wiring diagrams, it is best to consult with a qualified mechanic.
