General Diesel Repair in Simi Valley, CA

Looking for general repair services that keeps your diesel workhorses earning? We come to you for inspections, diagnostics, and repairs that prevent costly downtime. From preventive maintenance to tires, brakes, and clutches, you’ll get precise fixes without towing or waiting around.

General Diesel Repair Within 65 Miles Of Simi Valley, CA

You need reliable help that shows up prepared and solves problems fast. Our on-site team handles drivability checks, code scans, and hands-on testing to pinpoint root causes—then completes the repair right where the truck sits. We cover cooling, fuel, air, electrical, and aftertreatment issues alongside preventive maintenance, tire repair, brake repair, and clutch repair. Whether you’re chasing a no-start, uneven tire wear, weak braking, or slipping engagement, we’ve got you. For added clarity, we also perform road tests to verify the fix and prevent repeat failures. When time matters, count on The Rolling Wrench for trusted local diesel truck repair services wherever you need us.

What Makes Us Different

You shouldn’t have to juggle multiple vendors. We work on any make or model, so you get one point of contact for mixed brands and consistent workmanship across your entire lineup. Because we’re mobile-only, every visit is planned like a pit stop: we arrive with diagnostics, common wear parts, and the tooling to finish most jobs on site. That means no tow bills, no drivers stuck in waiting rooms, and less disruption to your schedule. We listen first, verify symptoms, and test methodically—air, fuel, electrical, and mechanical—to find the true cause, not just the symptom. Then we communicate clearly: what failed, why it failed, what we fixed, and how to prevent it. If parts are needed, we coordinate procurement and return promptly to wrap the job. Your result is simple—fewer headaches, faster turnarounds, and repairs that keep your day on track.

Contact Us About General Diesel Repair Now: Call 818-917-1673!

If you’re overdue for service, seeing warning lights, or dealing with pulling brakes, clutch slip, or tire wear, call 818-917-1673. We’ll confirm symptoms, dispatch a tech, and arrive ready to diagnose and repair on site. From PMs to component replacements, we keep you rolling—without the tow.

FAQs

What Areas Do You Serve?

As well as Simi Valley, CA, we also proudly service Oxnard, CA, Camarillo, CA, Thousand Oaks, CA, Agoura Hills, CA, San Fernando Valley, CA, Santa Clarita, CA, Castaic, CA, and Frazier Park, CA. We come to your yard, jobsite, or roadside. Call and we’ll coordinate the closest technician.

Why Did My Truck Just Stop Working?

Sudden shutdowns often trace to fuel starvation, electrical loss, or sensor faults. Check fuel level, filters, and visible wiring first. Many trucks store fault codes; scanning alongside voltage-drop testing quickly narrows causes like failed pumps, loose grounds, or safety interlocks so you can restart safely.

Why Is My Truck Completely Dead?

A completely dead truck usually indicates battery failure, parasitic draw, or a poor connection at the terminals or grounds. Inspect cables for corrosion and tightness, then test state of charge and cranking amps. If batteries pass, diagnose the starter circuit and main fuses to restore power reliably.

Book Fast, On-Site Service Today

Ready for dependable, general diesel repair that comes to you? Call 818-917-1673 now. We’ll arrive prepared, diagnose precisely, and complete the fix on site so your schedule—and revenue—stay on track.

Request Service
SERVICES

Services We Offer

You need work finished where the vehicle sits. We show up ready. Our mobile services cover everything, including diagnostics, brakes, tires, electrical, cooling, and routine maintenance for trucks, trailers, RVs, and company vehicles.

Request Service
REVIEWS

Testimonials

Here's what our customers are saying, feel free to leave us a review!

Viejo

Broke down just outside Frazier Park—cooling system started acting up and had me dead in the water with a full load. Called around, and most places either didn’t answer or told me it’d be hours. Then I got ahold of Rolling Wrench.
Google icon
Star icon
Star icon
Star icon
Star icon
Star icon