Remanufactured 6L90 Transmissions That Deliver Under Load
The 6L90 was built for bigger jobs — but it’s also known for big problems. Torque converter failure, fluid breakdown, and harsh shifts aren’t rare. They’re expected.
ACE remanufactures 6L90 units the way your shop needs them: updated, tested, and ready to install. No extra downtime. No return headaches. Just solid solutions for heavy-use platforms.
6L90 Problems We Know You’ve Seen
- Torque converter clutch failure and metal contamination
- Cracked bell housings or stator shaft wear
- Line pressure issues and delayed engagement
- Shift flare or harsh transitions under load
- Fluid breakdown in fleet or towing environments
We reman every unit with failure-prone parts replaced and OE updates included. Nothing leaves the floor untested.
What Sets Our 6L90 Builds Apart
- 🛠️ Fully remanufactured from case to tail
- 📊 Dyno tested under heavy-load simulation
- ⚙️ Includes updated valve bodies, converter clutch improvements, and new bushings
- 🛢️ Included with Mobil 1 synthetic transmission fluid
- 📦 Same-day shipping on most builds
- 🛡️ Backed by a 3-year / unlimited mileage warranty
Common Vehicles Running the 6L90
We supply drop-in 6L90 units for:
- Chevy Silverado HD (2500 / 3500)
- GMC Sierra HD (2500 / 3500)
- Chevy Express / GMC Savana 2500 & 3500 Vans
- Chevy Suburban / Yukon XL (Heavy-Duty Fleet Packages)
- Some Police / Municipal / Ambulance Chassis
Not sure about fitment or calibration? Call our team. We’ll confirm it in minutes.
Why Fleet & Commercial Shops Trust ACE
- ✅ More uptime — fewer comebacks and failed installs
- ⏱️ Save 4–8 labor hours per build vs. internal rebuilds
- 🔧 Live install support available when your tech needs help
- 🔁 Transferable warranty builds resale value and trust
- 💲 18-month warranty option available for price-sensitive fleet jobs
Shop-Tested. Fleet-Trusted.
- ✔️ 3-Year / Unlimited Mileage Warranty
- ✔️ Includes parts, labor, shipping & Mobil 1 fluid
- ✔️ Nationwide coverage from a real team
- 💲 Lower-cost option available when needed
Let’s Get Your Next 6L90 Out the Door
👉 Request a quote in under a minute
👉 Talk to a real tech to match the unit
👉 Most 6L90s ship same-day
The 6L90 doesn’t need to be a headache. Put a reman in your shop that you can trust.