Diagnostics

  • ABS Lit On Your Dashboard, Here Is What That Means!

    At Glenn's Auto & Truck Repair in Petaluma, CA, we’ve got every answer to your transmission questions and needs, and answers to a lot of things that fall outside of that realm as well. Today, we’re talking about the ABS light - an issue that plagues many modern drivers at some point or another.

  • Diagnosing a Bad Brake Master Cylinder

    mechanic working on brakes

    Your brake master cylinder is an integral part of your brake system. When one fails, some odd symptoms may arise, and it may be difficult to diagnose. Here’s some information to help you decide if yours has gone bad. At Glenn's Auto & Truck Repair in Petaluma, CA we want you to know what to look out for so that you can be safely on the road.

  • Diagnosing Issues with Your Vehicle

    mechanic sitting in vehicle working on a screen

    At Glenn's Auto & Truck Repair in Petaluma, CA, we understand the importance of being on top of the latest in automotive technology. That’s why we invest heavily in top-notch diagnostic and programming equipment, and why we have technicians that know how to use it.

  • Diagnosing Issues with Your Vehicle

    technician running diagnostics

    At Glenn's Auto & Truck Repair in Petaluma, CA, we understand the importance of being on top of the latest in automotive technology. That’s why we invest heavily in top-notch diagnostic and programming equipment, and why we have technicians that know how to use it.

  • Diagnosing the Issues with Your Vehicle

    mechanic running diagnostics on a vehicle

    At Glenn's Auto & Truck Repair in Petaluma, CA, our technicians have a wide variety of top of the line tools and equipment available to diagnose and repair your vehicle. We utilize equipment at the forefront of technological innovation to best provide for the specific needs of your car.

  • Diagnosing Those Dash Lights

    check engine light

    Since the first automobile, vehicle electronics have become increasingly more complex with every passing era. In the modern-day, your car, truck, or SUV likely depends on an array of modules, sensors, and components that control every aspect of how your vehicle runs and drives. Here’s what you need to know about your vehicle’s electronics systems, from Glenn's Auto & Truck Repair in Petaluma.

  • Everything you need to know about transmission sensors!

    Diagnostic Tablet on engine transmission sensor

    Our Petaluma drivers have been experiencing issues with their transmissions and there are a few things that we here at Glenn's Auto & Truck Repair feel are important to know so that you are more comfortable and confident if you are, indeed experiencing a transmission problem of any kind. First, if you drive a vehicle manufactured in the past few decades, there’s a good chance your transmission has a variety of sensors attached to it which monitors all kinds of things - fluid pressure, vehicle speed, temperature, air intake at the engine, and so on.  The first thing to check is your Transmission Sensor, which is a much more affordable fix than replacing your transmission!

  • Have you checked your battery? If it looks like this - It's bad!

    corrosive battery in car image

    When you are having trouble with your car or truck starting and you open the hood up to take a peek to see this....you'll see what an overly corroded battery looks like. This happens naturally over time on vehicle battery terminals.  If you are like 99% of normal Petaluma drivers, you don't check your oil or your battery so you don't keep an eye on the amount of corrosion that's building up on your car or truck battery.  Here at Glenn's Auto & Truck Repair, we do and there are solvents that we can use here in the shop during a battery maintenance service that will help slow the corrosion process but nothing that can prevent it 100%. Way before it gets to this point, we will be suggesting you consider replacing the battery. 

  • Is it time to replace your engine?

    At Glenn's Auto & Truck Repair in Petaluma, CA, we know it isn’t always easy deciding what to do next when it comes to major engine repairs. Fortunately, that’s what we’re here for - to help you make the best decision for your situation.

  • Looks Like A Problem? YES!

    Lady with car hood up - steam rising

    Sometimes it is EASY to see if your car or truck needs to come into our shop for professional repairs! 
    1.  You see steam rising from the engine!
    2.  The Check Engine Light is on!
    3.  The engine starts, but there is an odor that is not right.
    4.  You hear grinding or thumping noises.

  • Noticing an Emergency on your Dashboard

    At Glenn's Auto & Truck Repair in Petaluma, CA, we have seen our fair share of preventable engine failures. Frequently, engine disaster could have been avoided if the driver had known beforehand what the warning lights or gauges on the dashboard indicated. While some dash lights are fairly benign, others indicate imminent trouble. This guide from Glenn's Auto & Truck Repair in Petaluma, CA will prepare you for the next time your vehicle shows you a warning you shouldn’t ignore.

  • Recognizing Flood Damage When Buying A Vehicle

    Unless you are confident in your abilities as an automotive mechanic, there is really only one rule when purchasing a flood-damaged vehicle: don’t do it. Unfortunately, sometimes sellers aren’t particularly straight-forward with their used cars. Many will try to hide the fact that it’s been damaged by floodwaters at all or try to convince potential buyers that the car is in fact fine. “It has gone months with no issues” or “technically it is flood-damaged but” are two red flags, and while it isn’t impossible for a flood car to be fine, it’s altogether a good idea to stay away.
  • Sometimes it is obvious, others we have to hunt for it!

    car wiring chewed up photo

    Here at Glenn's Auto & Truck Repair in Petaluma we often do diagnostics and sometimes the problem is obvious after hooking the car up to the computer and reading the codes.  However, sometimes it isn't obvious during a test drive or after hooking it up to all those computer programs!  You know there is a problem and a Check Engine Light is on with the fleet customer telling you the car has been having issues starting and the light has been going off and on depending on several factors.  No pattern, no simple answer but the problem becomes obvious when you start following the "threads of the issue" thanks to all that ASE Technician training.

  • Specifications of your vehicle for reliable performance

    Performance Car

    If you drive a performance or luxury vehicle, you know that your precision engineered equipment demands precision tuning. At Glenn's Auto & Truck Repair in Petaluma, CA, we specialize in high-end imports and performance vehicles and keeping them up to par.

  • The ABS Light - why is it on, and what should you do?

    abs light on dash lit up

    Have you ever noticed your dashboard ABS icon lit up? If you have it means there is an issue that needs to be diagnosed, ABS issues don’t need to be ignored long. The anti-lock braking system, or ABS, is an important feature on every modern car, truck, or SUV. It has been legally mandated since 2013 in the US but was standard on almost every vehicle even prior to that. Here’s what you need to know to make sure your ABS system doesn’t fail, from Glenn's Auto & Truck Repair in Petaluma, CA.

  • What Does That Check Engine Light Mean?

    check engine light on in car dash

    It’s a busy morning, you’ve finally gotten everyone where they need to be and you’re just pulling into the parking lot at work when your dash light starts glaring at you. Your check engine light shines bright, but you have no idea why. Whether you can tell a difference in the way your car, truck, or SUV is running, your car is trying to tell you something. At Glenn's Auto & Truck Repair in Petaluma, CA, we can help!

  • When To Run Diagnostics

    911 diagnostics

    Modern vehicles are becoming increasingly complex, and as a result, computer diagnostic systems are becoming a necessity rather than a convenience. At Glenn's Auto & Truck Repair in Petaluma, CA, our state of the art technology and trained technicians are ready to diagnose any transmission issue you may be experiencing with your car, truck, or SUV.

  • When To Run Diagnostics On Your Vehicle

    Modern vehicles are becoming increasingly complex, and as a result, computer diagnostic systems are becoming a necessity rather than a convenience. At Glenn's Auto & Truck Repair in Petaluma, CA, our state of the art technology and trained technicians are ready to diagnose any transmission issue you may be experiencing with your car, truck, or SUV.

  • Your Vehicle's Computer Collects MORE Data Than Your SMART PHONE!

    Your car data owned by manufacturers now

    Newer Vehicles Generate as Much As 25GB of Data/Hour according to McKinsey.  Now That is Extremely Interesting!  It is also daunting as we now need to know "what data" right?  You also want to know where it is going if anywhere and who owns the data?  All interesting questions that we never thought about.  Just get in and drive, choose a destination and if a light goes off in the dash you call us here at Glenn's Auto & Truck Repair to schedule an appointment.   We want our Petaluma drivers to be informed as always and able to make their choices based on having facts.  This is a big change in the automotive-truck service industry and it really has not hit the news at all, so it is up to us to get you up-to-date and informed.  Here are the facts and where you can find more information!

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Glenn's Auto & Truck Repair

1309 Ross St, Suite E-F-G
Petaluma, CA 94954
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location small (707) 762-4360
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SHOP HOURS

Monday - Thursday   8:00 AM - 5:30 PM
Fridays & Weekends: Closed