Check engine light on, or something that just feels wrong?

Al & Son’s Automotive works on cars, trucks and SUVs. Bring the vehicle in, we hook it up to our computer system readers, tell you what the codes mean, and give you a fair and honest cost estimate. We don’t play games with the price.

When to bring it in

Check engine light on
Trust the lights on your dashboard. They are there for a reason.
Knocking under the hood
Harsh banging or knocking while the engine is running.
Excessive exhaust smoke
More smoke out of the exhaust than the vehicle usually makes.
Not performing up to standard & more
Cannot pinpoint where it comes from? give us a call.

What the computer is telling us

Modern vehicles all have computers installed that control their various system components and electronics. These computers are particularly useful because they enable the vehicle to effectively tell us what’s wrong with it. However, specialized tools and knowledge are required to translate what the computer is trying to tell us. Our auto diagnostic service crew have precisely those tools and experience.

Bring it in and we’ll find it

If it’s been a while since your vehicle last received services, or if you’re having issues and are unable to pinpoint its origin, bring your vehicle into our shop. Our automotive diagnostics team will hook your car, truck, or SUV into our computer system readers. Once we have the answers that we need, we’ll run you through a comprehensive list of services that need to be done, if any, and give you a fair and honest cost estimate.

Catching problems before they cost you

The best way to ensure that your vehicle stays running at optimal efficiency is by having frequent and consistent inspections and diagnostics. We’ll interpret the diagnostic data, putting it to use when servicing your vehicle. This way, we can actively work to prevent dangerous and financially draining situations or breaks from happening. The detail is on our auto diagnostics page.

My AC went out, and was able to get it recharged very quickly from Al & Sons. They were very honest and know what they are doing. Price was fair, and they did not try to up charge. It’s like brand new and I will be going back whenever I need more service.👍🏼
read more
Kyle Landry Piano Avatar
Kyle Landry Piano
5/13/2026
(909) 987-5819 · Mon–Fri 7:00AM–5:00PM
Serving Alta Loma, Rancho Cucamonga, Montclair, Claremont, Chino, Chino Hills, La Verne, San Dimas, Etiwanda, Fontana, San Bernardino, Rialto, Upland & more
Auto repair by city