Auto Services in Nappanee, IN

Comprehensive Auto Services - Locke Auto and Diesel Repair

If you’re really into your vehicle or if you want a one-stop-shop where you can address all your mechanical needs, no matter how varied or specialized they are, you’ll find Locke Auto and Diesel Repair in Nappanee, Indiana, to be your best option. We work on any make or model vehicle, gasoline or diesel. We even offer specialty services for your classic car, commercial auto, light-duty diesel, and performance truck. What’s more, you don’t have to make the drive into the city. You’ll find us just off Hwy. 19 at 28699 County Road 50. We look forward to offering you the best of all mechanical auto services, so give us a call at 574-393-9700 to schedule your appointment.

Every Mechanical Service for Every Vehicle

Our mission is to take care of all your automotive service needs. Therefore, we provide preventive maintenance services that will extend your vehicle’s life and keep it on the road for a long time to come. We offer routine oil and filter changes because who wants sludge buildup or premature engine death? Also, we take care of topping off and replacing vital fluids as needed because nobody wants to deal with an overheated engine.

From Repairs to Performance

We’re the trusted team for complex repairs, too. A transmission overhaul can remedy those slipping gears, and brake pad replacement can put an end to squealing or scrubbing as well as those dangerously long stopping distances. Should you find that it’s time for new tires, we sell and install major brands. We provide related services, too, such as rotating and balancing or wheel alignment. If you own something outside the realm of an ordinary daily driver, we service that also. We welcome you to bring us your fleet vehicles, trucks, light-duty diesel, or even your classic car. There’s not a make or model we haven’t seen. And, of course, if you are an enthusiast who wants to make your vehicle truly your own, we’re your shop for maintaining performance and conducting needed repairs.

Exceptional Customer Service

As much as we like servicing your vehicle, we enjoy providing excellent customer service for you even more. Our staff is friendly and always open to discussing your vehicle service and repair needs with you. We offer many conveniences to help you through your daily routine while we take care of your car. These include free shuttle services, free loaner cars, before- and after-hours drop-off and pick-up, electronic status updates via text or email, car wash/detailing, prompt turnaround (same day service if possible), and free wifi for our customers who are waiting on site. In addition, we offer a generous 36-month/36,000 mile warranty, and financing is an option if you need that. We’ll gladly make your appointment, but walk-in’s are always welcome at Locke Auto and Diesel Repair in Nappanee, Indiana, where we look forward to seeing you soon.

We Specialize in a Variety of Auto Repair Services

Standard Maintenance Services

  • Factory Scheduled Maintenance
  • 30/60/90/120K Mile Services
  • DMV Certified Vehicle Inspection & Repairs
  • State Emission Inspections & Repairs
  • Computer Diagnostics
  • Oil Changes
  • Tune Ups
  • Filter Replacements
  • Safety & Emissions Inspections
  • Windshield Wiper Blades
  • Fluid Services
  • Trip Inspections
  • Maintenance Inspections
  • Check Engine Light Diagnostics & Repair
  • Brake Repair & Antilock Braking System (ABS) Repair
  • Shocks & Struts Repair
  • Chassis & Suspension Repair
  • Suspension & Steering Repair


  • Transmission Repair & Service
  • Transmission Replacement
  • Driveline Repair & Maintenance
  • Axle Repair & Replacement
  • Clutch Repair & Replacement
  • Transmission Fluid Service
  • Flywheel Repair & Replacement
  • Driveshaft & U-Joint Repair
  • Transmission Flush
  • Differential Diagnosis
  • Differential Rebuild & Service

Engine Services

  • Engine Repair
  • Engine Replacement
  • Engine Performance Check
  • Belt Replacement
  • Hose Replacement
  • Cooling System Repair
  • Radiator Repair & Replacement
  • Water Pump Repair & Replacement
  • Drivability Diagnostics & Repair
  • Fuel Injection Repair & Service
  • Fuel System Repair & Maintenance
  • Ignition System Repair & Maintenance

Tire Services

  • Tire Sales
  • Tire Installations
  • Tire Rotation
  • Tire Balancing
  • Tire Replacement
  • Wheel Alignment
  • Tire Air Pressure Checks
  • Tire Pressure Monitoring System (TPMS) Repair & Service

Heating & Air Conditioner Repair

  • Heating & Cooling System Diagnostics
  • Auto Air Conditioning Repair & Service
  • Heating System Repair & Service
  • Belt Repair & Replacement
  • Compressor Repair & Replacement
  • Evaporator Repair & Replacement
  • Refrigerant Replacement

Fleet Services

  • Factory Scheduled Maintenance
  • Preventative Maintenance (PM)
  • Semi & Commercial Truck Repair & Maintenance
  • Pre-Purchase Inspections
  • DOT Inspections
  • State Inspections
  • Fleet Accounts

Auto Electrical Services

  • Electrical System Diagnostics & Repair
  • Alternator Repair & Replacement
  • Starter Repair & Replacement
  • Windshield Wiper Repair
  • Power Lock Repair
  • Power Antenna Repair
  • Power Steering Repair
  • Power Window Repair
  • Power Accessory Repair
  • Light Repair & Bulb Replacements

Exhaust Services

  • Exhaust Repair & Replacement
  • Muffler Repair & Replacement
  • Tailpipe Repair & Replacement
  • Catalytic Converter Repair
  • Exhaust Manifold Repair
  • Custom Exhaust Fabrication
  • Exhaust Upgrades

Hybrid Services

  • Factory Scheduled Maintenance
  • State of Health Battery Testing & Conditioning
  • High Voltage Battery Testing & Conditioning
  • High Voltage Cable Inspection & Repair
  • Brake System Repair & Maintenance
  • Transmission Fluid Flush
  • Heating & Cooling System Repair