Programming & Re-flashing
Don't neglect your vehicle's electronic systems - trust our experts to repair your vehicle properly the first time around! A poor driving experience can often be related to a malfunctioning computer or driving controls. Come to Greg's Auto Service and Repair to ensure your vehicle is in top driving condition.
Our electronic services include:
Check Engine Light
Seeing the "Check Engine" light on your dashboard can raise concerns, signaling anything from a minor issue like a loose gas cap to more serious problems such as a malfunctioning catalytic converter. At Greg's Auto Service and Repair, our skilled technicians can quickly read the diagnostic code and determine the exact cause of the alert. For prompt and precise problem resolution, don't hesitate to contact us at 314-428-4000 or visit our facility in St. Louis.
Computer Reflashing
At Greg's Auto Service and Repair, we provide computer reflashing services, an essential update procedure that installs the latest software on your vehicle's computer. These updates from manufacturers enhance aspects like drivability and fuel efficiency and are critical for maintaining your vehicle's performance. Located in the St. Louis area, our shop uses the latest technology to ensure your vehicle receives all necessary software enhancements.
Diagnostics
Our expert mechanics specialize in comprehensive diagnostics of all electronic components of your vehicle. For thorough and professional diagnostic services, consider Greg's Auto Service and Repair your go-to solution.
Drivability
Drivability concerns the smoothness and stability of your vehicle's acceleration, monitored by onboard computers analyzing sensor data. If you notice any irregularities in your vehicle's performance, our technicians are equipped to diagnose and rectify any issues, ensuring optimal operation.
Engine Controls
The engine control system is crucial for managing your vehicle's exhaust emissions and optimizing fuel efficiency. Regular maintenance of this system is essential to leverage your vehicle's advanced capabilities. For any concerns regarding engine controls, contact Greg's Auto Service and Repair to ensure they are functioning perfectly.
Vehicle Computers
Modern vehicles incorporate sophisticated computers that manage essential functions like engine and transmission efficiency. These computers process data from various sensors to optimize settings for components such as spark plugs, idle speed, and fuel injectors. Regular checks and updates are crucial to ensure these computers function optimally. Should your vehicle's computer systems fail, immediate attention and possibly replacement are necessary to maintain performance and safety.
To learn more about our Electronic services, call us at 314-428-4000 or request a quote by clicking below:
Request Quote

Our electronic services include:
Check Engine Light
Seeing the "Check Engine" light on your dashboard can raise concerns, signaling anything from a minor issue like a loose gas cap to more serious problems such as a malfunctioning catalytic converter. At Greg's Auto Service and Repair, our skilled technicians can quickly read the diagnostic code and determine the exact cause of the alert. For prompt and precise problem resolution, don't hesitate to contact us at 314-428-4000 or visit our facility in St. Louis.
Computer Reflashing
At Greg's Auto Service and Repair, we provide computer reflashing services, an essential update procedure that installs the latest software on your vehicle's computer. These updates from manufacturers enhance aspects like drivability and fuel efficiency and are critical for maintaining your vehicle's performance. Located in the St. Louis area, our shop uses the latest technology to ensure your vehicle receives all necessary software enhancements.
Diagnostics
Our expert mechanics specialize in comprehensive diagnostics of all electronic components of your vehicle. For thorough and professional diagnostic services, consider Greg's Auto Service and Repair your go-to solution.
Drivability
Drivability concerns the smoothness and stability of your vehicle's acceleration, monitored by onboard computers analyzing sensor data. If you notice any irregularities in your vehicle's performance, our technicians are equipped to diagnose and rectify any issues, ensuring optimal operation.
Engine Controls
The engine control system is crucial for managing your vehicle's exhaust emissions and optimizing fuel efficiency. Regular maintenance of this system is essential to leverage your vehicle's advanced capabilities. For any concerns regarding engine controls, contact Greg's Auto Service and Repair to ensure they are functioning perfectly.
Vehicle Computers
Modern vehicles incorporate sophisticated computers that manage essential functions like engine and transmission efficiency. These computers process data from various sensors to optimize settings for components such as spark plugs, idle speed, and fuel injectors. Regular checks and updates are crucial to ensure these computers function optimally. Should your vehicle's computer systems fail, immediate attention and possibly replacement are necessary to maintain performance and safety.
Auto Diagnostic FAQs
How do vehicle diagnostic systems work?
OBD stands for On-Board Diagnostics and is a sophisticated computer that collects vital information from a network of sensors, monitoring engine performance, emissions, and other key functions. It not only regulates various car systems but also acts as a diagnostic tool, alerting you to potential problems before they become major issues.
How long does a car diagnostic last?
While a basic diagnostic test typically wraps up in 1-1.5 hours, complex issues demanding further examination and component access/testing can extend the process to 2-3 hours. The length ultimately depends on the severity of the problem and the potential presence of multiple underlying culprits.
What is included in a car diagnostic test?
Diagnostic tests are like X-rays for your vehicle, utilizing specialized equipment to scan its complex systems and components like the engine, transmission, and throttle. From minor oil tank issues to intricate electrical glitches, these tests diagnose a wide range of potential problems. However, interpreting the data they generate requires trained professionals, making dealer shops and skilled mechanics your best bet for accurate diagnoses.
To learn more about our Electronic & Diagnostic services, call us at 314-428-4000 or request a quote by clicking below:
Request Quote
Discover More About Electronics Repair Services At Greg's Auto Service and Repair in St. Louis
Fleet Electrical Services
Electrical Repair Services
Contact Us Today!
Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!
What Our Customers Are Saying
I'm a 28-year-old female professional, who has spent many years as an extremely WARY customer of auto shops. This sense of distrust was a result of a myriad of bad experiences with mechanics who took advantage of my lack of knowledge for cars. HOWEVER, I would HIGHLY RECOMMEND putting your faith in Greg's Auto Service and Repair. This is a remarkably well-run business, operated by an owner who actually cares about his customers - not an ounce of greed in this man's heart. My car was in dire need of good attention, and that's exactly what it got. I'm so thankful I stumbled across his business, and I wouldn't take my car anywhere else after working with Greg and his wife Marsha. What a team! This is a MUST-GO repair shop.
St. Louis, MO
Wonderful service. We have had several of family cars repaired at Greg's. Trust and fast service.
St. Louis, MO
I've never met a more honest repair shop. They are fantastic. Fast. Reasonable and they don't try to sell me something I don't need. My friends turn me on to Greg's and I'm really happy they did. If you want to feel safe, looking for a mechanic, then I recommend Greg's Auto.
St. Louis, MO
People there are extremely nice! When I walk in or call them you instantly feel like a friend that you've known for a few years. That's how well they treat you, you never feel like just a business opportunity it's more of friendship. Highly recommend you go to them for service if you ever need it.
St. Louis, MO


