TCRA News

March 7, 2026

SEMA Applauds Repeal of Greenhouse Gas Endangerment Finding

SEMA is celebrating the Trump Administration’s decision to rescind the 2009 Endangerment Finding and Greenhouse Gas Vehicle Standards, dubious policy positions that empowered regulators at the federal and state levels to override consumer […]
January 18, 2026

6L80 and 6L90 Torque Converter Similarities & Interchangeability

Introduction The General Motors 6L80 and 6L90 transmissions are widely used in a variety of GM vehicles, from trucks to performance cars. Both are six-speed automatic […]
January 11, 2026

Understanding GM 10L1000 Early & Erratic TCC Engagement

© Sonnax Transmission Company, Inc. Reprinted with permission Some ’20–’23 GM 3500HD series trucks with 10L1000 transmissions may experience early TCC application or a condition in […]