Niles Nimmo

If you run a Caterpillar C13, you already know this engine is a workhorse. Found in everything from on-highway trucks to wheel loaders and gensets, the C13 turbocharger is the single most important component standing between you and the boost numbers that move 80,000-pound loads. When that turbo starts to fail, fuel economy drops, EGTs

The Caterpillar C15 turbocharger is one of the hardest-working components in over-the-road trucking, and when it starts to fail it takes your boost, your fuel economy, and your uptime down with it. Whether you’re running an ACERT C15, a pre-emissions BXS/MBN block, or a 6NZ pulling 80,000 pounds over the Rockies, knowing how to diagnose

The 2017 Duramax L5P didn’t just bump horsepower numbers, it rewrote the turbocharger playbook that GM had been running since the LB7 days. For the first time in Duramax history, the engine arrived with a Garrett GT37-series variable geometry turbo controlled by a fully electronic actuator and tighter emissions calibration than anything before it. If

If you run an ‘07.5 to ’10 GMC or Chevy with the 6.6L LMM Duramax, the variable geometry actuator on your Garrett GT3788VA turbocharger is the single most likely component to leave you stranded with a P003A, P0046, or P2563 code. The LMM turbo is a workhorse, but the electronic vane actuator that controls boost

The Cummins QSB is one of the most versatile diesel platforms ever built, and the turbocharger bolted to it is doing serious work whether that block is sitting in a sportfishing boat, a wheel loader, or a 60-foot scissor lift. If you run QSB-powered equipment, understanding which Holset turbo is on your engine, how it