GM Gen 3 LS-based truck PCM Tuning Knowledge - 1 calibration entries

These 1 entries document the GM Gen 3 LS-based truck PCM: what the log shows, how the parser reads it, and what tuners changed in response. The largest bodies of evidence are Spark / Speed Density reference. This page shows aggregate counts only; individual KB rows, source details, and tuning findings remain available inside the signed-in app.