Mobile Fleet Trailer Maintenance Programs (PM)
Northern California
Scheduled on-site lube, brake adjustments, and 90-day compliance checks for logistics yards in Sacramento, Stockton, Tracy, Modesto, Fairfield, Dixon, Roseville, Elk Grove, Lathrop, Manteca, West Sacramento & Woodland.
Mobile Kingpin Replacement
One of the few mobile services in Northern California performing kingpin replacement at your yard. This rare specialty service keeps your trailers in service without costly towing to a shop. Photos available upon request.
Learn About Kingpin Service →The TruMac PM Checklist
Every service is documented with VMRS codes and uploaded to your fleet management system
Lube & Grease
Landing gear legs, slack adjusters, wheel hubs, and kingpin plates. We use heavy-duty fleet-grade grease, not automotive multi-purpose.
See Landing Gear Project →Brake Certification
Measure stroke, check lining thickness, adjust slack adjusters (30/30 standard). Full BIT prep for California 90-day compliance.
90-Day BIT Service →Lighting & Electrical
7-way plug test, marker lights, ABS sensor diagnostics. We catch intermittent failures before DOT inspections do.
Electrical Repair Services →Tires (Air Only)
Inflation check and tread depth recording. No tire changes—just pressure verification to keep you rolling safely.
90-Day BIT Prep
We align every PM with California's 90-day BIT inspection requirements. Never miss a compliance window again.
BIT Inspection Details →Dry Van Specifics
Roll-up door cables, roof leak inspection, floor decking integrity checks. We catch structural issues early.
Door & Gate Repairs →Hitch & Coupler Systems
Pintle hooks, couplers, lunette rings, and fifth wheel connection points. Critical for safe multi-trailer operations.
Hitch Services →Air System Diagnostics
Air bag suspension, brake lines, glad hands, and pressure testing. Stop chasing phantom air leaks.
Air System Guide →Outsourced vs. In-House Maintenance
Why fleet managers choose TruMac's mobile PM program over hiring in-house
| Feature | In-House Mechanic | TruMac Mobile PM Program |
|---|---|---|
| Cost Structure | Fixed Overhead (Salary + Benefits) | Variable (Pay Per Unit) |
| Tooling Investment | You Buy & Maintain Tools | We Bring All Tools & Equipment |
| Scalability | Hard to Scale (Hiring Delays) | We Add More Trucks Instantly |
| Shop Space Required | Needs Dedicated Bay(s) | We Work in Your Yard |
| Downtime | Trailers Travel to Shop | Zero Travel Time |
| VMRS Coding | Manual Entry Required | Standard on Every Invoice |
| Specialization | General Mechanic Skillset | Fleet Trailer Specialists Only |
| Kingpin Replacement | Must Outsource or Tow | We Do It On-Site |
Complete Mobile Trailer Services
From preventive maintenance to emergency repairs across Northern California
Dispatching Scheduled PM Units
To major logistics hubs across Northern California's freight corridors
West Sacramento
ZIP: 95691The Port & Industrial Blvd Corridor. Deep Water Ship Channel distribution centers and warehouse terminals.
Stockton
ZIP: 95206Arch Road, Airport Way, and BNSF Intermodal. One of Northern California's densest logistics zones.
Tracy / Lathrop / Manteca
ZIP: 95330The I-5 & I-205 Distribution Triangle. Gateway to the Central Valley freight network.
Roseville
ZIP: 95652McClellan Park & Foothills Industrial. Union Pacific rail yard and surrounding distribution centers.
Fairfield / Vacaville / Dixon
ZIP: 95688The I-80 Logistics Corridor. Strategic position between Bay Area and Sacramento Valley.
Sacramento / Elk Grove
ZIP: 95826Power Inn Road, Depot Park, and Florin Perkins industrial zones. Our home base for rapid response.
Modesto
ZIP: 95391Central Valley's logistics hub. Highway 99 corridor distribution centers and agricultural freight terminals.
Woodland
ZIP: 95776Yolo County's agricultural and distribution center. I-5 corridor access to Northern California markets.
Hayward / East Bay
ZIP: 94545East Bay industrial corridor. Port of Oakland access and I-880 logistics zone.
Recent Fleet Projects
Mobile repairs completed at logistics yards across Northern California
Door Frame Structural Repair
Complete roll-up door frame rebuild at McClellan Park distribution center. Reinforced mounting brackets and replaced damaged vertical rails.
Landing Gear Overhaul
Emergency landing gear replacement at I-5 logistics center. Completed on-site in under 3 hours to minimize downtime.
Air Brake System Diagnosis
Resolved intermittent air leak at Port distribution yard. Replaced degraded glad hands and tested full system pressure.
Multi-Trailer Fleet PM
Scheduled preventive maintenance for 15-unit fleet at Vineyard logistics center. Completed lube, brake, and lighting service.
Landing Gear Emergency Service
After-hours landing gear repair preventing next-day delivery delays. Mobile response within 90 minutes of call.
Agricultural Fleet Maintenance
Seasonal PM program for agricultural hauling fleet. Specialized service for high-dust environments and heavy loads.
Fleet Maintenance Program FAQs
What managers need to know about TruMac PM contracts
In California, we recommend aligning PMs with the 90-Day BIT Inspection cycle. This ensures you never miss a compliance window while keeping equipment greased and road-ready. For high-utilization fleets (over 1,000 miles/week per unit), monthly lubrication and quarterly brake adjustments prevent costly roadside failures.
Yes. All TruMac invoices use standard VMRS coding, making it easy to upload data into your fleet management software (TMT, Samsara, Fleetio, Geotab, etc.). This ensures compliance tracking and accurate maintenance histories without manual data entry.
Our dry van PM includes: lube and grease (landing gear, slack adjusters, wheel hubs), brake certification (stroke measurement, lining thickness, slack adjustment to 30/30 standard), lighting and electrical (7-way plug test, marker lights, ABS diagnostics), tire inflation and tread depth recording, plus specific checks for roll-up door cables, roof leaks, and floor decking integrity.
Outsourced mobile fleet maintenance with TruMac eliminates fixed overhead (mechanic salaries, benefits, insurance), removes the need for shop space and tooling investments, and scales easily as your fleet grows or contracts. We perform all PMs at your yard, eliminating equipment downtime from shop visits and allowing your team to focus on core logistics operations.
Yes. We dispatch scheduled PM units to West Sacramento 95691 (Port and Industrial Blvd corridor), Stockton 95206 (Arch Road and BNSF Intermodal), Tracy/Lathrop 95330 (I-5/I-205 triangle), Roseville 95652 (McClellan Park), and the entire I-80 corridor including Fairfield, Dixon, and Vacaville. Contract fleets receive guaranteed service windows.
Absolutely. We integrate with your existing maintenance schedule in TMT, Samsara, Fleetio, Geotab, or any system using VMRS codes. We can trigger service based on mileage, days in service, or your custom PM intervals. Your system sends the alert, we dispatch to your yard.
Yes. TruMac is one of the few mobile services in Northern California that performs kingpin replacement at your yard. This rare specialty service eliminates expensive towing costs and keeps your trailers in service. We bring all necessary equipment including welding and pressing tools. Contact us for photos of recent kingpin projects.
We specialize in fleet yards operating 100+ commercial trailers. Our contract programs are designed for logistics operations in Sacramento, Stockton, Modesto, Tracy, Fairfield, and surrounding Northern California distribution hubs. We provide parts and maintenance programs tailored to your fleet size and utilization patterns.
No. TruMac focuses exclusively on scheduled yard-based maintenance and fleet yard emergency service. We do not provide freeway or roadside breakdown service. This specialization allows us to deliver faster response times and better quality work in controlled fleet environments.
We service fleet yards in Sacramento (95826), Stockton (95206), Fairfield (95688), West Sacramento (95691), Tracy (95330), Roseville (95652), Hayward (94545), Modesto (95391), plus Dixon, Elk Grove, Lathrop, Manteca, Vacaville, and Woodland. Our mobile units cover the entire I-5, I-80, and Highway 99 logistics corridors.
Start a Fleet PM Program
Stop chasing breakdowns. Switch to scheduled preventive maintenance and reduce your emergency repair costs by 80%.
Contract programs available for fleets operating 100+ commercial trailers

