Transmission Service

Transmission Auto Repair Service in Denton, TX

Welcome to the Transmission Service page at Huffines Kia Corinth. If you're here, you probably have some questions about your transmission. We understand how important a well-maintained transmission can be to the proper function of your car. That's why our Service Department technicians have received factory training to maintain, diagnose, and repair your transmission.

What Is a Transmission?

The transmission in your car plays a pivotal role in propelling your vehicle, though most people don't understand how it works. Think of it like a bicycle that has ten speeds. You have a shift lever that you press to toggle up and down the gears. The gears allow you to pedal at a consistent rate. When it becomes too easy to pedal or aren't getting the power you need, you toggle up a gear. Now you're pedaling produces more power, and the bicycle moves faster. 

The same principle applies to your car's transmission. The traditional transmission has multiple gears that convert the engine's power and turn the wheels. In a manual transmission, you start in first gear. When the gear reaches its maximum power, you shift into second gear, and so on until you reach your highest gear. In an automatic transmission, this happens without driver input. The transmission has settings that automatically move through the gears to optimize and balance the engine's power output to the drive wheels.

Modern transmissions have evolved, moving away from traditional gearboxes, and now many use a system with a belt or chain and pulleys. Instead of shifting through gears, the tension on the belt or chain gets adjusted to optimize and balance the power to the drive wheels.

The Basics of Transmission Service

Your transmission has many moving parts, all of which are under enormous pressure to perform under various weather, temperature, and road conditions. The working parts of your transmissions are lubricated and cooled by transmission fluid. Older cars have a transmission fluid dipstick you can use to check the level and quality of the fluid, similar to the one used to check your engine oil. 

In most new vehicles, the transmission fluid remains in a sealed system. This sealed system makes checking the fluid level and quality difficult for the average person because you have to drain the fluid. When you bring your car to our Service Center at Huffines Kia Corinth for transmission maintenance, we will drain the fluid, drop the pan, and replace the gasket before reassembling the pan and refilling the transmission with fresh fluid. We will clean the pan and replace the transmission fluid filter as well. Commonly, we can have this service completed in less than 30 minutes.

We also perform a multi-point inspection of your transmission. If your transmission has a computerized system, we will run electronic diagnostic testing for error and failure codes. Additionally, we will perform a visual inspection of all the systems that work with your transmission, like the shift linkage or cable, vacuum connections, transmission cooler, transmission mounts, axles, U-joints, CV joints, and more. 

We'll take your car for a brief test drive to ensure the system shifts properly and that neutral, park, and drive gears are performing up to factory standards. We'll listen for noises and other signs there might be a problem with your transmission.

Should our technician find anything in need of repair, we will provide you with a detailed explanation of the problem. We'll also give you a quote for the repairs and a time frame for completion, and our technician will answer all of your questions before initiating any service.

How Often Should You Service Your Transmission?

Most vehicles should have their transmission serviced every few years. The mileage can range from 60,000 miles up to 100,000 miles. Your owner's manual will give you the exact timeframe or mileage. If properly maintained, your transmission should last 300,000 miles or more. Modern transmissions have sensors and other electronic components that might fail at any time. These components are relatively easy and inexpensive to fix.

Signs Your Transmission Needs Service

You may need your transmission serviced if you experience odd vibrations or hear unusual sounds, like whining or straining from your powertrain. Many things can make these sounds, from loose mounting bolts to failing U-joints or CV-joints. 

Your transmission probably needs service if it begins slipping. Slipping happens when the transmission doesn't engage the next gear on time, causing the engine to rev as the transmission tries to engage. Slow, weak, or delayed acceleration can also be signs of a slipping transmission.

If you see fluid pooling beneath your car, check for leaks. You may not be able to determine the leak's location. Transmission fluid should be a bright, clean, cherry-red color when fresh. If the color of the leaking fluid has this red color, you should bring your car in immediately for service.

Tips to Keep Your Transmission Running Well

Get regular inspections and services to optimize your transmission's performance and extend its life. Keep your cooling system in good working order will also help your transmission. Most transmission problems stem from overheating caused by your cooling system or engine oil failing. Some transmissions have a separate transmission cooler, so be sure to keep this cooler in good working condition. 

Heat can also build up if you constantly drive in stop-and-go traffic. This heat build-up can wear out your transmission fluid sooner than the manufacturer intended, so if your commute has lots of traffic, you should be diligent with regular transmission inspections. In some situations, you can install a transmission cooler to help alleviate an overheating transmission problem.


At Huffines Kia Corinth, we know the importance of having your car's transmission running well. That's why our factory-trained technicians are experts at diagnosing issues before they impact your everyday life. We invite you to
schedule your transmission service online or stop by anytime. When you bring your car in for transmission service, you can be confident your transmission will get a thorough inspection and the proper maintenance to keep your vehicle running in tip-top condition.