Semi-Truck and Trailer Repair That Comes to You in Sacramento

When your semi goes down, the trailer sitting behind it is just as much of a problem as the truck itself. A broken gladhand, a trailer lighting fault, a blown axle seal, or a stuck landing gear can all hold up a load just as completely as an engine issue on the power unit. Capital Diesel provides mobile semi-truck and trailer repair across Sacramento and the surrounding area within a 50-mile radius, covering both units in a single service call so you are not coordinating two separate repair providers while your freight sits waiting.

Our technicians handle the full range of semi-truck repairs onsite, including diesel engine diagnostics and repair, transmission and clutch work, air brake system repairs and adjustments, electrical and lighting faults, DPF and emissions system issues, cooling system failures, suspension and axle repairs, battery and charging system service, and starting system failures. On the trailer side we handle brake inspections and adjustments, lighting and ABS fault diagnosis, tire repairs and replacements, landing gear repairs, gladhand and airline repairs, axle seal leaks, and structural issues including basic welding and fabrication.

We work on all major semi-truck brands including Kenworth, Peterbilt, Freightliner, Western Star, Volvo, International, Mack, Hino, and Isuzu, as well as all common trailer configurations including dry vans, flatbeds, reefers, tankers, drop decks, and tandem axle trailers. Our mobile units are fully equipped with professional diagnostic tools and the parts and hardware needed to resolve most semi-truck and trailer repairs at your location without a tow. We serve Sacramento and the surrounding area within a 50-mile radius, including West Sacramento, Elk Grove, Roseville, Rocklin, Folsom, Davis, Woodland, Citrus Heights, Rancho Cordova, and North Highlands.

If your semi-truck or trailer is down anywhere in the Sacramento area, call (916) 949-4882 and we will dispatch a diesel mechanic to your location immediately. We arrive onsite in 30 minutes or less, Monday through Friday, 8am to 5pm.

Why Sacramento Owner-Operators and Fleet Managers Trust Capital Diesel for Semi-Truck and Trailer Repair

  • Trailer Repairs Handled on the Same Call as the Truck: Most mobile mechanics focus on the power unit and leave trailer issues for someone else. We service both in a single visit, covering brake adjustments, lighting faults, tire repairs, landing gear, gladhands, axle seals, and structural repairs alongside all truck work.

  • No Tow Required for Most Repairs: Our mobile units carry professional diagnostic equipment and common repair parts for both semi-trucks and trailers. We resolve the majority of breakdowns at your location without the cost and delay of a tow to a shop.

  • Accurate Diagnosis Before Any Repair Starts: Electrical faults, intermittent brake issues, and check engine lights on semi-trucks require proper diagnostic equipment to identify correctly. We connect to your ECM, pull fault codes, and verify the root cause before recommending or starting any repair.

  • Onsite in 30 Minutes or Less Across Sacramento: We dispatch immediately upon your call and arrive at your location in 30 minutes or less throughout Sacramento and the surrounding 50-mile service area, minimizing the time your truck and load are sitting idle.

  • All Major Brands and Trailer Configurations Covered: From Kenworth and Peterbilt power units to dry van, flatbed, reefer, and tanker trailers, our technicians have hands-on experience with the equipment Sacramento-area owner-operators and fleets actually run.

  • Straightforward Pricing, No Surprise Charges: We diagnose the problem, explain what needs to be done, and give you a clear price before any work begins. If additional issues are found during the repair, we communicate them immediately and wait for your approval before proceeding.

Semi-Truck and Trailer Repair

Frequently Asked Questions

  • Can you repair the trailer and the truck in the same service call?
    Yes. This is one of the key advantages of calling Capital Diesel. Our technicians are experienced with both power unit repairs and trailer-specific systems including brake adjustments, lighting and ABS faults, tire service, landing gear, gladhands, airline repairs, axle seal leaks, and basic structural welding. We handle both in a single visit so your entire rig is back in service faster.

  • What trailer types do you service for mobile semi-truck and trailer repair in Sacramento?
    We service all common commercial trailer configurations including dry vans, flatbeds, refrigerated trailers, tankers, drop decks, lowboys, and tandem axle trailers throughout the Sacramento area and surrounding 50-mile service radius.

  • My semi has a check engine light on but still runs. Do I need to stop immediately?
    Not always, but it depends on what fault code is triggering the light. Some faults are informational and allow continued operation, while others, particularly those related to the emissions system, cooling system, or oil pressure, can cause serious engine damage if ignored. Call (916) 949-4882 and our technician can come to your location to pull the fault codes and give you an accurate assessment before you make the call on whether to keep running.

  • How quickly will you arrive after I call for semi-truck or trailer repair?
    We dispatch a diesel mechanic to your location immediately and arrive onsite in 30 minutes or less throughout Sacramento and the surrounding 50-mile service area. Monday through Friday, 8am to 5pm.

  • Do you carry parts for common semi-truck and trailer repairs on your mobile unit?
    Yes. We stock common repair parts for both semi-trucks and trailers on our mobile service vehicles, including brake components, air fittings, lighting hardware, belts, hoses, filters, and other frequently needed items. Most repairs are completed on the first visit without a parts delay.

  • What semi-truck brands do you service in Sacramento?
    We service all major commercial semi-truck brands including Kenworth, Peterbilt, Freightliner, Western Star, Volvo, International, Mack, Hino, and Isuzu. Call (916) 949-4882 to confirm coverage for your specific make, model, and year before dispatch.

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