L&L Automotive & Performance
Grand Bay, Alabama’s Diesel Repair & Performance Services
When it comes to diesel trucks, performance and reliability are everything. At L&L Automotive & Performance we're a Full-Service Diesel Repair Shop, we specialize in comprehensive diesel diagnostics, repairs, and upgrades for Ford Power Stroke, Chevy Duramax, and Dodge Cummins engines. Whether you need routine maintenance or complete engine replacement, our experienced technicians have the tools, training, and OEM software to get the job done right.
Complete Diesel Engine Diagnostics & Repair
Expert Diesel Engine Repair in Grand Bay, AL | Serving Mobile & Baldwin Counties
Diesel trucks demand more than a standard mechanic, they require specialized knowledge, tools, and experience. At L&L Automotive & Performance, we provide expert diesel engine diagnostics and repairs for light-duty, medium-duty, and heavy-duty diesel trucks. Whether you're driving a Ford Power Stroke, Chevy Duramax, or Dodge Cummins, our shop in Grand Bay, Alabama is equipped to handle it all.
We proudly serve Mobile County, Baldwin County, and the surrounding areas, offering trusted diesel solutions that keep trucks running strong across south Alabama.
Our diesel technicians use cutting-edge diagnostic tools and OEM programming software to quickly identify and fix issues with precision. From minor performance problems to major engine failures, we’re committed to delivering dependable, long-lasting repairs the first time, every time.
Diesel Fuel System
Repair & Replacement
Your diesel engine is only as good as the fuel system feeding it.
At L&L Automotive & Performance in Grand Bay, Alabama, we specialize in diesel fuel system diagnostics, repair, and full replacements for Power Stroke, Duramax, and Cummins engines. If you're experiencing loss of power, poor fuel economy, hard starts, or smoke from the exhaust, a failing fuel system could be to blame.
We proudly provide diesel fuel system services across Mobile County, Baldwin County, and surrounding areas, helping truck owners, fleets, and contractors keep their equipment running clean and efficient.
Diesel fuel systems are complex, high-pressure systems designed for precision. Over time, components can wear down or become contaminated with water, dirt, or algae. Let our expert team inspect, diagnose, and restore your system to factory performance or better.
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Diesel DEF & Emissions System Repair in
Grand Bay, AL
Today’s diesel trucks rely on advanced emissions systems including Diesel Exhaust Fluid (DEF), Diesel Particulate Filters (DPF), and Exhaust Gas Recirculation (EGR) to run clean and efficient. At L&L Automotive & Performance, we provide expert diesel emissions system repair in Grand Bay, AL, handling everything from DEF heater failures and clogged DPFs to EGR valve issues and sensor faults. Whether you're dealing with a warning light, reduced power, or regen problems, our team has the experience and equipment to get your truck back to full performance. We work on all major diesel platforms including Power Stroke, Duramax, and Cummins, serving truck owners across Grand Bay, Mobile County, and beyond.
Diesel Turbocharger Repair & Replacement
When it comes to diesel performance and reliability, two of the most critical systems are your turbocharger and head gasket assembly. Whether you're dealing with power loss, excessive smoke, coolant issues, or unusual turbo noises, L&L Automotive & Performance in Grand Bay, Alabama is your trusted source for precision repairs and high-performance upgrades. Your turbocharger plays a key role in delivering the power, torque, and fuel efficiency your diesel engine depends on, especially under heavy load or while towing. We offer both OEM replacements and aftermarket turbo upgrades for drivers looking to boost performance and drivability. From Duramax and Power Stroke to Cummins, we proudly serve diesel truck owners across Mobile County, Baldwin County, and beyond, keeping your engine running at its best.
Diesel Head Gasket & Head Stud Installation
Diesel engines generate extreme heat and high combustion pressure, making head gaskets and studs frequent failure points, especially in tuned or heavily worked trucks. At L&L, we specialize in head gasket replacements and ARP head stud installations to reinforce engine integrity and prevent future breakdowns.
Common signs include white smoke, coolant loss, overheating, or rough running, particularly in Ford Power Stroke and Chevy Duramax engines. We provide full diagnostic service, top-end teardown, and professional machining to ensure a perfect seal and long-term reliability.
Diesel Engine Replacements & Performance Upgrades
At L&L Automotive & Performance in Grand Bay, Alabama, we know that sometimes a repair just isn’t enough to get your diesel truck back on the road with the reliability and power you need. That’s why we offer complete diesel engine replacements and custom-built performance upgrades tailored to your goals and budget. Whether you’re replacing a worn-out motor with a dependable OEM long block or building a high-horsepower engine with upgraded internals, our team is equipped to handle the entire process from start to finish. We perform engine removals and installs, short block and long block replacements, and can outfit your build with forged pistons, rods, cams, and other high-performance components to withstand high boost and heavy use. If you're ready to bring your diesel back to life or take it to the next level, we’ll build a solution that fits your application. Proudly serving Mobile and Baldwin Counties, L&L is your trusted shop for diesel engine replacement and performance builds that are built to last.
Why Choose L&L Automotive & Performance?
At L&L Automotive & Performance, we’re more than just a repair shop, we’re your local diesel experts in Grand Bay, Alabama, proudly serving Mobile County, Baldwin County, and the surrounding areas.
Our team of certified diesel technicians brings years of hands-on experience, dealership-level diagnostic equipment, and a passion for diesel performance to every job. From routine maintenance to full engine builds and performance upgrades, we offer the same high-quality service you’d expect from a dealership, but with the honesty, transparency, and personal attention of a locally owned shop.
We specialize in Ford Power Stroke, Chevy Duramax, and Dodge Cummins trucks and provide everything from fuel system repairs and turbo replacements to transmission swaps, suspension upgrades, and OEM programming.
Whether you're a daily driver, fleet operator, or diesel enthusiast, L&L Automotive & Performance is the trusted name to keep your truck running strong. Call us today, stop by our shop in 12800 US-90, Grand Bay Al 36541 or schedule your diesel service online, and experience the difference of working with true diesel professionals.