Diesel Truck Repair in San Diego
Trusted by San Diego fleets & owner-operators for fast diagnostics and minimal downtime
Diesel Diagnostics • Engine Repair • DPF/DEF • DOT Inspections • Fleet Maintenance • CARB Compliance
25+ years supporting fleets and owner-operators
Certified techs with OEM-level diagnostics
Warranty-backed repairs with clear, honest estimates
Serving San Diego, Otay Mesa, Chula Vista, National City & surrounding areas
Downtime Is Expensive. We Help You Stay Moving
Missed loads, DOT pressure, derates, and unexpected breakdowns cost fleets and owner-operators thousands. LTEK Diagnostics focuses on fast, accurate diesel diagnostics and repairs to reduce downtime and keep trucks compliant and on the road.
Diesel Truck Repair Services in San Diego
Diesel Diagnostics
We pinpoint the real cause fast using OEM-level diagnostic tools and proven troubleshooting. Ideal for check engine lights, derates, no-starts, and performance issues.
Fleet Maintenance
Prevent breakdowns with scheduled maintenance built around uptime. Great for fleets that want consistency fewer surprise, and faster turnaround.
Engine Repair
From leaks and cooling issues to hard starts and power loss, we handle diesel engine repairs with clean estimate and no guesswork.
CARB Compliance
We help keep your equipment aligned with California emissions requirements. If you’re unsure what applies to your truck, we’ll walk you through it.
dpf / def / aftertreatment
We diagnose and repair aftertreatment issues that cause regens, derates, and downtime. Get back to reliable operations without the parts-cannon approach.
DOT Inspections
Stay ready for the road with thorough DOT inspections and straightforward reporting. We’ll flag what matters and help you prioritize fixes.