ALS Diesel

Get Back On The Road Fast

With our 24 Hour Emergency Roadside Service


About Us



 We at ALS Diesel, Inc. have been in the repair business for more than 20 years. Our experience ranges from light to heavy duty trucks, trailers and cars. We specialize in diagnostics, and feel at home with electrical diagnostics and repairs.  We are dedicated to providing high-quality repairs to keep you safe and happy. 


We Have You Covered

Whether you're coming in for a routine inspection or a repair service, we promise that you will be completely satisfied with our work.  We know your truck is more than a tool that gets you from point A to point B, it’s your freedom. Your truck is your office. You depend on it, so it’s important your truck receives quality repairs and service. Our full function state-of-the-art scan tools will ensure you're running smooth, so you can hit the road hard and clock up miles. 


Our Quality Promise

 When you bring your truck to ALS we make sure your truck leaves trouble-free so you can have your freedom, and your peace of mind. We're committed to providing a stress-free experience to both new and returning customers. Our shop only uses parts from reputable brands to ensure that your vehicle is always ready to drive.  

ALS Diesel, Inc is just off I-39/90,  U.S. Highway 51, WI 26 and U.S. Highway 14. For your convenience, we are also cleverly located near many Hotels, Car Rentals, Restaurants, Grocery Stores, and Shopping Centers. 

Services Include



  • ​Aftertreatment Systems
  • ​Air Conditioning
  • Anti Lock Brakes
  • ​Batteries
  • Brakes
  • ​Breakdown Assistance
  • CAT
  • ​Car Hauler
  • ​Check Engine Lights
  • Cummins
  • Detroit Diesel
  • Diagnostics
  • Differentials
  • DOT Inspections​​​​
  • Dump Trucks
  • Duramax
  • 24 Hour Mobile Roadside Service


  • Electrical Systems
  • Engine Repair
  • Fabrication
  • Fleet Maintenance
  • Free Estimates
  • Fuel Delivery
  • General Automotive Repair
  • Heating Systems
  • HVAC Repair
  • Isuzu
  • Injector Coding
  • Jump Starts
  • Liftgate Repair
  • Light, Medium and Heavy Duty Trucks
  • Lockouts
  • Mobile Truck Repair
  • Mobile Welding


  • ​​Motorhome Maintenance/Repair
  • ​​​​Out of Service Repairs
  • Power Stroke
  • Powertrain
  • ​Preventative Maintenance
  • Refer Repair
  • Regeneration
  • Service Provider Program
  • Sprinter Vans
  • Starting/Charging
  • Suspension
  • ​Trailer Repair/Maintenance
  • Transmissions
  • ​Truck Repair/Maintenance
  • Utility Trailers
  • ​and So Much More!

Contact Us

ALS Diesel, Inc.

1705 Newport Ave, Janesville, Wisconsin 53545 United States

(608) 931-5674


24 Hour Roadside Assistance

Monday - Friday: 7am - 5pm

Saturday: Closed

Sunday: Closed

E-mail Us


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