Duramax Buyer's Guides
Best Duramax Turbo Upgrades: Stock Replacements to Compounds
How to choose a turbo for your GM Duramax — VGT rebuilds vs. drop-in upgrades vs. compound turbo kits, and how much power each supports on the LB7, LBZ, LMM, LML, and L5P.
July 22, 2026
GuideCommon Duramax Problems by Generation (and the Parts That Fix Them)
A straight-talk reference to the known weak points of every 6.6L Duramax — LB7 injectors, LLY overheating, LBZ/LMM sticking turbo vanes, LML CP4 failure, L5P — and the exact parts that fix each one.
July 26, 2026
GuideDuramax EGR & Cooling Guide: Coolers, Radiators & Fixes
How to address the Duramax's cooling and emissions weak points — EGR coolers, oil coolers, radiators, water pumps, and thermostats on the LMM, LML, and L5P diesel.
July 22, 2026
GuideDuramax Generations & Fitment Guide: LB7 to L5P by Year
A year-by-year reference for every GM Duramax generation — LB7, LBZ, LMM, LML, and L5P — mapped to the GMT800, GMT900, K2XX, and T1XX truck platforms, so you order parts that actually fit your Chevy Silverado or GMC Sierra HD.
July 23, 2026
GuideDuramax Injector Buyer's Guide: LB7 to L5P Symptoms, Types & Replacement
How to choose fuel injectors for your GM 6.6L Duramax — reading failure symptoms, understanding stock vs. reman vs. performance injectors, the LB7 vs. common-rail differences, and the return-line 'black death' fix by generation.
July 27, 2026
GuideDuramax Maintenance Schedule & Parts Checklist (6.6L Service Intervals)
A mileage-by-mileage service schedule for the 6.6L Duramax — oil, fuel filters, air filter, glow plugs, coolant, transmission, and the wear parts to keep on the shelf. Intervals and part types for LB7 through L5P.
July 25, 2026
GuideLB7 vs L5P Duramax: Which Generation to Build (and How)
A plain-English comparison of the LB7, LBZ, LMM, LML, and L5P Duramax — reliability, injector issues, the CP4 pump, and the parts each engine needs most, from head studs to tuners.
July 22, 2026