Wed, 06 May 2026 09:21:18 +0000

Do This Before Driving – The 6L80 Secret Everyone’s Overlooking Every driver knows the basics: check oil, tire pressure, brakes, headlights—but few stop to consider one of the most critical yet overlooked pre-driving checks: the 6L80 transmission control module (TCM). Hidden beneath the hood, this small but powerful component governs how your vehicle’s transmission shifts gears—impacting fuel efficiency, performance, and even long-term reliability. Despite its vital role, the 6L80 remains a secret between manufacturers and everyday drivers. But mastering one key step before every drive could transform your driving experience. Here’s exactly what you need to do—and why it’s more important than you think. ---