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102680020C

RoadReady Chevy 6L80E Transmission and Torque Converter

RoadReady Chevy 6L80E Transmission and Torque Converter
$2,999.00 $3,299.00
Total with selected add-ons
Part # 102680020C
Selected: —
Core Fee Required: $750.00 USD added at checkout
Dyno Tested 6-Year Warranty 5 Star Reviewed

Recommended Add-Ons

Add fluids, cooling and the 6L80 bypass delete now so you’re ready to install.
Includes FREE 3-Year Extended Warranty
Features
  • Complete Overhaul Kit: Includes all critical components to restore the transmission to like-new performance, ensuring reliability and durability.
  • New Micron Filter: Provides superior filtration for cleaner fluid, reducing wear and extending the life of internal components.
  • Remanufactured Pump: Restores optimal fluid pressure, ensuring smooth shifts and consistent operation.
  • Refurbished TCM (Transmission Control Module): Restored to ensure precise shift timing and compatibility with advanced driving requirements.
  • PREVENT TRANSMISSION FAILURE: Watch our step-by-step installation video https://monstertransmission.com/pages/how-to-properly-install-a-transmission
Warranty

WARRANTY

Note

  • 6 Year Warranty Unlimited Miles (3 Year Monster + 3 Year Extend)
Notes

NOTE

  • A GM MDI2 or equivalent scan tool with J2534 pass-thru programming capability is required to update the TECHM/TCM calibration file and initiate a relearn. This is a critical step to take before attempting to test-drive the vehicle
  • Does NOT Fit Chevy Silverado / GMC Sierra 2019-2021 models with 5.3L VIN D. The engine type is indicated by 8th digit of the vehicle identification number (VIN)
  • Does NOT Fit Chevy Silverado 2016-2018 High Country
  • Does NOT Fit Chevy Silverado 2016-2018 models with 5.3L VIN R. The engine type is indicated by the 8th digit of the vehicle identification number (VIN)
  • Does NOT Fit GMC Sierra 2016-2018 Denali or SLT
  • HP Tuners is capable of programming the TECHM/TCM as an alternative method.
  • This RoadReady unit is manufactured by a Monster-Approved vendor and is not built in-house by Monster Transmission.

Chevy 6L80 Transmission: Reliability, Upgrades, and Monster-Built Performance

The GM 6L80 six-speed automatic is a workhorse behind Silverado, Sierra, Escalade, Camaro, Corvette and more. From towing to daily driving to performance builds, heat control, clutch capacity, and converter lockup strategy are the difference between a transmission that survives and one that thrives. Our Monster-built 6L80 units address the known weak points—friction capacity, valve body hydraulics, cooling, and torque converter durability—so you get crisp shifts, lower temps, and the headroom to add power without risking premature failure.

Common 6L80 Pain Points We Solve

  • Converter clutch shudder during lockup (often 35–55 mph)
  • Overheating in towing/stop-and-go, leading to burnt fluid and clutch glaze
  • Valve body pressure losses causing flare, harsh 2-3 / 3-4 shifts, or limp mode
  • TCC apply/release strategy that wears the clutch prematurely
  • Cooler circuit restrictions that keep temps high even after a fluid service

What You Get with a Monster 6L80

  • Upgraded clutch packs and steels for higher thermal capacity
  • Calibrated valve body components for stable line pressure and clean shifts
  • Heavy-duty or performance torque converter options to match your build
  • Recommended cooler and inline filtration strategies to keep temps in check
  • Dyno-tested before it ships, backed by our 6-Year warranty

Whether you’re restoring shift quality on a stock truck or building a tow-ready SUV with added power, our StreetMonster, SportMonster, and TrackMonster tiers help you pick the right clutch capacity and converter strategy for your real-world use—not just a brochure number.

6L80 Transmission — Frequently Asked Questions

What vehicles use the 6L80?
The 6L80 came in many GM RWD/4WD platforms including Silverado/Sierra 1500, Suburban/Tahoe/Yukon, Cadillac Escalade, Camaro, Corvette, and select vans—model years vary by platform.
How do I know if I have a 6L80 vs 6L90?
The 6L90 case is slightly longer with additional clutch capacity
What causes 6L80 shudder?
Typically torque-converter clutch (TCC) slip during light throttle lockup. Heat, degraded fluid, and valve-body leaks accelerate it. Our converter and hydraulic updates address root causes.
Will a fluid change fix shudder?
It can help temporarily if fluid is only mildly degraded. For recurring shudder we recommend upgraded converter, proper cooler service, and calibration review.
Is tuning required after install?
Not always, but optimizing shift timing and TCC apply with HP Tuners or similar can improve longevity and feel—especially with power adders or gear/tire changes.
What ATF do you recommend?
Use a high-quality full-synthetic ATF that meets GM specs. Fresh, clean fluid is critical for TCC life and thermal control.
How much power can your 6L80 builds handle?
Each tier (StreetMonster, SportMonster, TrackMonster) increases clutch capacity and converter strength. Tell us your goals and we’ll match a safe rating.
Will this work with towing packages and auxiliary coolers?
Yes. We encourage an external cooler and, in many cases, an inline filter to protect the valve body and TCC.
Do you dyno test every unit?
Yes. Every Monster 6L80 is dyno tested for pressure, shift quality, and TCC apply before it ships.
What’s the warranty?
6-Year warranty. Coverage terms apply
Do I need to ship my core?
Most orders require a refundable core charge. We provide freight-ready packaging and arranged pickup when applicable.
How fast can you ship?
If inventory shows in stock, orders placed before 11 AM EST qualify for our Same-Day Shipping Guarantee. Backorder times vary by build and parts availability.
$2,999.00
Free 3-Year Extended Warranty