Monster Transmission Blog: Transmission Tech, Upgrades & How-To Content

6L80E / 6L90E Transmission Install Guide (GM Trucks & SUVs) Chevy Silverado/Sierra • Tahoe/Yukon/Suburban • Camaro/Corvette • 2WD/4WD • StockMonster • StreetMonster • SportMonster • TrackMonster This is the streamlined, shop-tested walkthrough for installing a Monster 6L80E/6L90E in late-model GM trucks/SUVs and select cars. It blends the factory-correct sequence with...

Installing a 68RFE the Right Way: Complete Step-By-Step + Relearn, Fluids & Troubleshooting If you’re putting a new or reman 68RFE into a Ram with the 6.7L Cummins, the install process matters as much as the parts. Most failures we see after an install trace back to three things: dirty...

4L60E vs. 4L65E: Spotting the Differences in Your Vehicle GM’s 4-speed automatics confuse a lot of folks because the 4L60E and 4L65E look nearly identical on the outside. But if you’re swapping, rebuilding, or trying to order the right converter, the differences matter—a lot. Below, we’ll show you exactly how...

“The Worst” Chevy Transmission Ever? Let’s Talk Honestly About the 6L80E The internet loves a hot take. You’ve probably seen thumbnails calling the Chevy/GMC 6L80E “the worst transmission ever.” We get it—when a truck shudders at 45 mph, drops into limp mode, or burns a clutch pack after a tune,...