Columbia Fleet Service
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800-308-6349
410-799-2500

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Diesel Mechanic

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Columbia Fleet Service has job openings available for a Diesel Mechanic We're looking for honest, dedicated, customer-service oriented people to join our team at Jessup, MD.

Applicants are required to be:

  • At least 18 years old
  • Recipients of a high school diploma or GED
  • In possession of a valid driver's license
  • Must have a clean driving record
  • Be able to diagnose and repair all aspects of diesel engines
  • Have own tools
  • Familiar with multiple makes and models of vehicles
  • Committed to keeping up to date on automotive knowledge
  • Dependable, honest and organized
  • Available to work weekends and some holidays

Columbia Fleet Service offers 401K, Health Insurance, Free Long term and Short term disability, paid vacation, and uniforms. Pay based on experience.

Click here to submit your application for this position.

  • Working Hours
    Monday 6:00AM - 5:00PM
    Tuesday 6:00AM - 5:00PM
    Wednesday 6:00AM - 5:00PM
    Thursday 6:00AM - 5:00PM
    Friday 6:00AM - 5:00PM
    Saturday Appointment Only
    Sunday Appointment Only
    Roadside Assistance & Towing Are Available 24/7!
  • Visit Our Shop

    We have friendly staff who will take care of you

    7661 Assateague Drive
    Jessup, MD 20794

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  • Have Questions?

    We're here to help you!

    800-308-6349
    410-799-2500
    Send A Message
    • Vehicle Tips

      According to recent studies, 5 percent of all motor vehicle fatalities are clearly caused by automobile maintenance neglect.

    • Vehicle Tips

      The cooling system should be completely flushed and refilled about every 24 months. The level, condition, and concentration of coolant should be checked. (A 50/50 mix of anti-freeze and water is usually recommended.)

    • Vehicle Tips

      Never remove the radiator cap until the engine has thoroughly cooled. The tightness and condition of drive belts, clamps and hoses should be checked by a pro.

    • Vehicle Tips

      Change your oil and oil filter as specified in your manual, or more often (every 3,000 miles) if you make frequent short jaunts, extended trips with lots of luggage or tow a trailer.

    • Vehicle Tips

      Replace other filters (air, fuel, PCV, etc.) as recommended, or more often in dusty conditions. Get engine drivability problems (hard stops, rough idling, stalling, diminished power, etc.) corrected at a good shop.

    • Vehicle Tips

      A dirty windshield causes eye fatigue and can pose a safety hazard. Replace worn blades and get plenty of windshield washer solvent.

    • Vehicle Tips

      Have your tires rotated about every 5,000 miles. Check tire pressures once a month; let the tires cool down first. Don't forget your spare and be sure your jack is in good condition.

    • Vehicle Tips

      Check your owner's manual to find out what fuel octane rating your car's engine needs then buy it.

    • Vehicle Tips

      Keep your tires inflated to the proper levels. Under-inflated tires make it harder for your car to move down the road, which means your engine uses more fuel to maintain speed.

    • Vehicle Tips

      Lighten the load. Heavier vehicles use more fuel, so clean out unnecessary weight in the passenger compartment or trunk before you hit the road.

    • Vehicle Tips

      Use the A/C sparingly. The air conditioner puts extra load on the engine forcing more fuel to be used.

    • Vehicle Tips

      Keep your windows closed. Wide-open windows, especially at highway speeds, increase aerodynamic drag and the result is up to a 10% decrease in fuel economy.

    • Vehicle Tips

      Avoid long idling. If you anticipate being stopped for more than one minute, shut off the car. Contrary to popular belief, restarting the car uses less fuel than letting it idle.

    • Vehicle Tips

      Stay within posted speed limits. The faster you drive, the more fuel you use. For example, driving at 65 miles per hour (mph) rather than 55 mph, increases fuel consumption by 20 percent.

    • Vehicle Tips

      Use cruise control. Using cruise control on highway trips can help you maintain a constant speed and, in most cases, reduce your fuel consumption.

    • Vehicle Tips

      Keep your engine tuned. A fouled spark plug or plugged/restricted fuel injector can reduce fuel efficiency as much as 30 percent.

    • Vehicle Tips

      Inspect the engine's belts regularly. Look for cracks or missing sections or segments. Worn belts will affect the engine performance.

    • Vehicle Tips

      Have the fuel filter changed every 10,000 miles to prevent rust, dirt and other impurities from entering the fuel system.

    • Vehicle Tips

      Change the transmission fluid and filter every 15,000 to 18,000 miles. This will protect the precision-crafted components of the transmission/transaxle.

    • Vehicle Tips

      Inspect the suspension system regularly. This will extend the life of the vehicle's tires.

What our clients say about us?

Reviews and comments from our satisfied customers

  • Quality work, great with car carriers, thanks for getting me rolling again guys.


    -Ryan M.

  • Got my truck worked on at this shop. Owner is a very nice guy. He worked with me, left very happy. Thanks!


    -Kavin

  • Completes work in a timely fashion.


    -Cierra O.

  • I been a truck driver for 35 years and I can tell you this shop is no joke. I've gone to this place for a real long time. I live over there in Dundalk and there are shops around there but I don't go to them because they aren't as good as this place. I will drive over to Jessup eveytime I need work on my tractor. Thanks for doing a great job.


    -Donnie J.

  • Very fast and courteous service.Prices are reasonable. Road service was quick and efficient.


    -Matthew B.

  • Reliable & Dependable, 24/7! Great service!


    -Tanya W.

  • Great services!


    -Chien K.

  • Repairs were done in a timely manner, and prices were very reasonable.


    -Bob H.

  • They do their best to get you in and out as quickly as possible. Great crew...great shop


    -James S.

Interested in working with our team?

We are currently on the lookout for the following:

  • Trailer Mechanic
  • Diesel Mechanic

    • Learn More