Welcome to Our Service Department

Most people in Lewisville know Nationstar Autoplex for our excellent selection of pre-owned vehicles. However, we also have a full-service auto repair shop, and work on all kinds of cars and trucks through a variety of services. If you are looking for a quick and affordable vehicle repair shop, you've come to the right place!

Along with a wide variety of repair services, Nationstar Autoplex is one of the few shops in Lewisville who can perform required State of Texas vehicle inspections. If your car or truck happens to initially fail an inspection, our technicians can take a look at the vehicle in our shop and help ensure that you will be able to pass a second inspection. If your vehicle fails the inspection, you will not need to pay an additional fee to have your vehicle re-inspected. 

Common reasons your vehicle might fail to pass a state inspection include inadequate windshield wipers, poor brake performance, burnt out bulbs, and parking brake issues. Our service team can perform all of these repairs, including much more!


Our Services Include:

Oil Change

These days, any auto shop can perform an oil change for an affordable price. Our technicians are highly qualified and held to a high standard of service. Customer service is our priority, and when you choose the Nationstar Autoplex Service Center for an oil change, you can combine a variety of our other routine maintenance services to ensure that you are getting a fair price and that your car will continue to run smoothly. 

Aftermarket Installations

Along with dozens of mechanical services, our service team is experienced in providing several aftermarket installation services that will take your vehicle to the next level. Our primary aftermarket services include backup camera installations and GPS installations. If you have an older model vehicle that did not come equipped with a backup camera, it is never too late to add this essential feature. Our backup cameras are perfectly positioned every time, and drastically lower the chances of damage to the rear of your vehicle. In addition, a built-in GPS system ensures that you can navigate hands free without having to rely on your smartphone for directions. Call us for more information about the electronic vehicle systems we install. 

Air Conditioning

Here in Texas, a properly functioning car air conditioning system is crucial for those blistering summer months. We often don't think about how our air conditioning systems even work until they go out. This could be the result of hose pipes clogging or dripping, or a problem with the air conditioner compressor. If you can't go a day longer without some cool air in your car, bring the vehicle by our repair center. 


Another crucial piece of proper wear on your vehicle is correct wheel alignment. If your vehicle is tending to pull to either side of the road, making unusual noises, or showing unusual wear on either the rear or front tires, a wheel alignment may drastically help. Our alignment services not only help your vehicle drive smoother, they can also improve your fuel efficiency.

Balance Tires

What is a tire balance anyways? When one of our technicians performs a tire balance, they use a highly calibrated balancer and a series of wheel weights to evenly redistribute weight of your wheel assembly. This involves spinning the wheels at high speeds to determine the heaviest point. If you are noticing vibrations in your steering wheel when you approach high speeds, a tire balancing service may be the cure!

Brake Adjustments & Repairs

We are your one-stop-shop for all brake needs. If you have been experiencing any kind of grinding or squeaking noises when you brake, it is probably time to have your brakes inspected. The Nationstar Autoplex Service Center can take a close look at your brake system and install new brake pads and/or rotors depending on your vehicle's needs. We can also work on your e-brake, which is independent of the hydraulic brake system. If your emergency brake is stuck or not working properly, bring it by our shop.

Catalytic Converter Repair and Replacement

If you had any troubles passing an emissions test, the catalytic converter is one of the first culprits to look at. Catalytic converters is a part of the exhaust system in modern cars and trucks that helps cut down on emissions. If your catalytic converter is failing, you will likely need to have it replaced, especially if you are hoping to pass a Texas emissions test. A catalytic converter replacement will not only cut down on harmful emissions, but can improve the acceleration performance of your vehicle as well. Our service team is no stranger to catalytic converters. Give us a call to schedule an appointment. 

Check Engine Light Diagnostics

Seeing your vehicle's check engine light turn on is a stressful sight. No need to worry! Our service team in Lewisville has helped many vehicle-owners quickly diagnose the issue that caused a check engine light to turn on and efficiently repaired it so that our customers can continue on with their everyday life. However, it is important to have a professional mechanic diagnose the cause of your check engine light at your earliest convenience before continuing to drive the vehicle. There are several common reasons that your check engine light may have come on. These can relate to your spark plugs and wires, catalytic converter, O2 sensor. Bring your car by the service department and we can help. 

Coolant Flush

Coolant, or radiator fluid, is responsible for maintaining a proper internal temperature in your vehicle's engine. When coolant ages, it loses its anti-corrosion properties, which can deteriorate the various metals that make up different engine components. A good way to fight this is to not only top off your radiator fluid, but completely flush the system. 

Differential & Transfer Case Service

Our gearbox specialists provide transfer case services as well as front and rear differential services to ensure that your vehicle is able to turn correctly. If you are experiencing trouble turning, sense the feeling of slipping gears or a burning smell, it is likely time to have your differential inspected and have the fluid changed. Four wheel drive vehicles have both a front and rear differential that is connected with a transfer case. Keeping these components in working condition means ensuring that the gears, bearings, and shafts are receiving proper lubrication and that the respective fluids are not contaminated. Our service team can quickly perform these services and get you back on the road. 

Muffler Service & Replacement

If you are experiencing symptoms such as your engine running louder than normal, rattling when you idle, or significantly worse gas mileage, it is probably time to have our experienced team take a look at your muffler! A fast diagnosis can tell us what needs to be done, and save you a more costly repair down the road, including engine damage. Give us a call to set up an appointment.  

Power Steering Services

The Nationstar Autoplex service center also handles any and all steering issues. This can range from a simple power steering fluid top-off or power steering pump replacement to rack and pinion repair services. Whether you are no longer able to easily turn the steering wheel, the steering feels loose or even binds at certain angles, we can help. Our experienced team can quickly diagnose the root cause of your steering problems and have you back on the road in no time at all. 

Timing Belt Services

Whether your vehicle has a timing belt or a timing chain, these pieces are a vital part of your vehicle's operation. If your car is idling poorly, emitting large amounts of exhaust, or you noticed fraying timing belt edges, we recommend having it replaced. This can save you inconvenient breakdowns in the future. In many cases, it makes sense to have your water pump and timing belt replaced at the same time. Both components are crucial to the operation of your vehicle and work in conjunction to keep your car running smoothly. Our mechanics can give you honest recommendations for preventative maintenance services such as this that your car may need. 

Tire Rotation

A tire rotation is a very simple service that is often neglected by car owners. Rotations help you avoid extensive wear on your tires while giving them a longer lifetime. We recommend having your tires rotated every 6,000 to 8,000 miles. When you visit for an oil change, it is a good time to ask our experienced technicians if they recommend having your tires rotated. In most vehicles, the front tires wear a little quicker than the rear, so it is important to evenly distribute the wear. 

Transmission Service & Replacement

We are often asked whether a transmission flush is really necessary, and if the results are worth it. Many people think that topping off the transmission fluid is a much easier fix than a transmission flush. However, if you are having problems shifting gears or are experiencing vehicle surges, you might need a flush. What a transmission flush does is run a solution through the transmission fluid lines of your vehicle to rid your car of old, contaminated transmission fluid that could be causing problems in shifting gears. For more serious repairs, we offer complete transmission replacement and installations as well. 

Wash, Wax, & Interior Clean

We can give your car or truck a deep detailing that will make it look brand new. Our team is accustomed to detailing vehicles to prepare them for our car lot, and can do the same for your vehicle. There's no need to worry about buying all the cleaning materials and cleaning your car yourself - our team can do it in a portion of the time. Our detail services include a waxed exterior, bug and tar removal, tires shining, window cleaning, deep interior vacuum, floor mats shampooed, and more. 

Additional Services:

A/C Repair

Air Conditioning Evac/Recharge Service

Air Intake Cleaning & Filter Changing

Airbag and SRS System

Alternator and Starter Services

Battery System Testing

Brake Service and Repair

ABS System service and repair

Drum and Rotor Service

Hydraulic System Diagnosis and Repair

Check Engine Light Diagnostics

Clutch Repairs & Replacement

Complete Tuning

Comprehensive Maintenance Inspection

Computer Diagnostics (Check Engine Light, Air Bag Light, etc.)

Cooling System Service (Water Pumps, Radiators, etc.)

Diesel Service and Repair

Diesel Service

Differential & Transfer Case (4WD)

ServiceDrive Train Repair

Drive Belt Services

Electrical and Computer Diagnosis

No-Start Diagnostics

Electrical System Diagnosis and Repair

Electrical and/or Wiring Problems

Emissions Repair Facility

EVAP system service and repair

Engine Head Gasket Repair

Exhaust System Work

Fleet Services

Catalytic Converter Emissions


Oxygen Sensor Replacement

Factory Recommended Services by Each Manufacturer

Four Wheel Drive Suspension Modifications

Fuel Injection Repair

Interior / Exterior Lighting Replacement

Mechanical and Suspension Repairs

On-Site Repairs

Power Steering Services

Power Window & Door Lock Repair

Preventative Maintenance Inspection

Suspension (Struts, Shocks, Axles, Control Arm)

TDI Diesel RepairTiming Belt Services

Timing Chain Replacement

Water Pump Replacement

Transmission Service & Replacement

Tune-Ups, Air Filters, Fuel Filters

Oil and Fluid Leak Repairs


Nationstar Autoplex

1651 S. Stemmons Frwy
Directions Lewisville, TX 75067

  • Sales: (469) 637-9900


  • Monday 8:00am - 5:00pm
  • Tuesday 8:00am - 5:00pm
  • Wednesday 8:00am - 5:00pm
  • Thursday 8:00am - 5:00pm
  • Friday 8:00am - 5:00pm
  • Saturday Closed
  • Sunday Closed