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Diesel & Truck Repair Shops in Fullerton, CA

6 of the 106 auto repair shops we list in Fullerton have diesel engine or heavy truck repair.

Diesel engines and heavy trucks need different tools, parts and training than passenger cars, and many shops turn them away. Every shop here names diesel, semi, heavy-duty or commercial truck work in its business name, listing or on its own website — a shop that services “cars, trucks and SUVs” is not enough.

  1. Fullerton Smog Center

    537 W Valencia Dr Ste C, Fullerton, CA 92832

    Mon–Fri 9am–5pm, Sat 8:30am–3:30pm, Sun closed

    Smog & emissionsDiesel & truck
    Call Website Directions

  2. Fullerton Stop N Smog

    1133 E Commonwealth Ave, Fullerton, CA 92831

    Smog & emissionsDiesel & truckSe habla español
    Call Website Directions

  3. Complete Auto Repair

    1133 E Commonwealth Ave, Fullerton, CA 92831-4615

    Smog & emissionsDiesel & truck
    Call Website Directions

  4. Ronin Autowerks

    617 W Valencia Dr, Fullerton, CA 92832

    Smog & emissionsDiesel & truckEuropean & importMuffler & exhaustA/C repairTowing
    Call Website Directions

  5. Raptor Diesel

    1301 E Orangethorpe Ave, Fullerton, CA 92831

    Diesel & truck
    Call Directions

  6. Mihm's Truck Repair

    1526 E Walnut Ave, Fullerton, CA 92831-4731

    Diesel & truck
    Call Directions
Say what you drive. A shop that works on diesel pickups (Duramax, Power Stroke, Cummins) is not always set up for semi trucks, and fleet shops may put contract customers first. If you run a commercial vehicle, ask whether they do DOT inspections.

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Diesel & Truck Repair Shops near Fullerton

Good to know

Do I need a diesel specialist for my pickup?

Most shops can handle routine maintenance, but fuel injection, turbochargers, diesel emissions systems (DPF, DEF, EGR) and engine repairs are best done by a shop that works on diesels every day.

Where can I get a DOT inspection?

Commercial truck shops and some diesel repair shops perform annual DOT inspections with a qualified inspector. Call ahead — not every truck shop offers them.