Know what's wrong
before you buy parts.

GarageGuide walks you from “my car has a problem” to “my repair is complete”. One simple question at a time, like a friend standing beside you under the hood.

Built for beginners. Optimized for driveway wrenching. ·Read the FAQ

Two AIs working for you

One figures out what’s wrong. The other walks you through fixing it.

Diagnostic AI

Asks the right questions one at a time, narrows down the real cause, and tells you which tests to run before you spend on parts.

Installation AI

Turns the diagnosis into a step-by-step install guide — with safety warnings, tools, torque notes flagged for verification, and answers when you get stuck.

Add your vehicle

Enter year, make, model, engine and mileage. We remember it for every future diagnosis.

Diagnose what’s wrong

Start with a symptom or OBD-II code. The Diagnostic AI asks one question at a time and narrows down the real cause - no guessing.

Find the parts

Once we know what’s wrong, we identify the parts you likely need and show you where to buy them at local stores near you.

Install it step-by-step

The Installation AI walks you through the repair one step at a time - safety warnings, tools, and answers whenever you get stuck.