LB7, LLY, LBZ, LMM, LML and L5P — Power Diesel diagnoses and repairs Chevy and GMC Duramax trucks on-site in Miami, from injectors to CP4 pumps.
Answering calls day & night across Miami-Dade and Broward. Se habla español.
The GM Duramax is a strong engine, but each generation has its known weak points — LB7 injectors, CP4 pump failures on LML and L5P, glow-plug and EGR issues, and emissions faults that trigger limp mode. Power Diesel comes to your Chevy or GMC in Miami, diagnoses the real problem and repairs it on-site whenever possible, including the Allison transmission behind it.
We handle the injector and CP4 pump problems these trucks are known for.
We come to your truck, yard or the roadside with pro scanners, tools and common parts.
Day, night, weekends and holidays — we answer when other shops are closed.
See also our injector repair and diagnostics pages.
Comparing mechanics? See why we are the best Duramax mechanic in Miami, and for the truck as a whole, the best Chevrolet diesel mechanic.
Call Power Diesel and we'll come to you — 24/7.
Yes. We handle Duramax injector jobs across all generations and CP4 pump failures on LML and L5P — on-site in Miami and South Florida. Call (786) 395-7263.
Yes. We read the actual code and live data, find the cause (often emissions, fuel or sensor related) and get you back on the road.
Yes — both, all generations from LB7 to L5P, plus the Allison transmission behind them.
Yes — se habla español. Call or WhatsApp (786) 395-7263 and we'll help you in English or Spanish.