Built for Uptime.
Every job starts with a real diagnostic — not a guess. Here's what we handle.
Diagnostics & ECM Scanning
Full ECM scan, live data analysis, fault code interpretation, and root-cause diagnosis. We pinpoint the problem in 60 minutes — so you know exactly what's wrong before a single wrench turns.
Explore Diagnostics 02Engine Repair
Injector service, valve adjustments, oil & coolant leaks, and complete overhauls across all major platforms.
Aftertreatment / DPF / SCR
DPF regen & cleaning, SCR/NOx sensors, DEF system repair, EGR service. We get you out of derate.
Brakes
Air brake service, drum & shoe replacement, slack adjusters, S-cam, and ABS diagnostics.
Electrical
Wiring harness, alternator & starter, lighting, and chassis electrical troubleshooting.
A/C & HVAC
Condenser replacement, recharge, compressor diagnosis, and climate control service.
Free 90-Day Inspection — Limited Time Offer
Keep your fleet compliant and road-ready. *Terms apply.
Request InspectionConveniently located near the 905/125 interchange. Easy access for fleets coming from the border crossing.
"Sebastian and the team at LTEK are wonderful. They are fair, knowledgeable, and their customer service is top notch. Shops like LTEK are exemplars of professionalism!"
"They've been honest, transparent, done such great work, all at an extremely reasonable price, time and time again. I recommend them 110%."
"We've been working with LTEK since 2019. Louie is a very professional and honest diesel mechanic who always diagnoses issues accurately."
Everything fleet managers and owner-operators ask us before their first visit.
What makes LTEK different from other diesel shops?+
We're a diagnostics-first shop. Every job starts with an ECM scan and live data analysis to identify the root cause — not guessing or throwing parts. Transparent, fast, and built to minimize your downtime.
How quickly can you diagnose my truck?+
Diagnostics are our priority. Most trucks get a full diagnosis and estimate within 60 minutes of check-in.
Do you work with fleets?+
Yes. We specialize in fleet maintenance and compliance — scheduled inspections, PM programs, and fast diagnostics to keep your trucks legal and running.
Do you perform DOT, BIT, and CARB inspections?+
Yes. DOT, BIT, 90-day inspections, and CARB Clean Truck Check testing — including required repairs to help trucks pass compliance.
Do you offer warranties?+
All repairs come with a workmanship warranty. Parts covered by the manufacturer's warranty unless otherwise stated.
Do you offer mobile mechanic services?+
Yes. Mobile service across San Diego County for breakdowns and on-site diagnostics. Our team is fully equipped for field work.
Neither Can We.
Same-day diagnostics. Transparent estimates. Repairs done right.
