Enter Vehicle Year Make Model

Specify your vehicle's year, make and model to guarantee fit.

1A Auto Diagnostic & Repair Application

The 1A Auto Diagnostic & Repair app will guide you through your automotive repair, whether you are a first time do-it-yourselfer or a life-long technician. With over 13,000 in-depth auto repair & diagnostic videos, you are sure to find answers to your automotive problems.

This car & truck repair app has the following features:

  • Learn from professional technicians about how to diagnose and repair vehicles like yours
  • Search the auto repair video library by your year, make, and model
  • Learn how to diagnose your vehicle using your senses — seeing, hearing, feeling, or smelling
  • Navigate check engine light codes and learn what causes them
  • Shop for the quality auto parts used in the videos
  • Use time stamps to jump ahead to the part of the video you need
  • Read the step-by-step written instructions for the repair
  • Save your favorite videos to easily reference later

If you have any questions or suggestions, please reach out to us at AppSupport@1aauto.com

Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.