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Chevy / GMC • Trucks & SUVs • 6L80 / 6L80E (RPO MYC)

6L80 / 6L80E Transmission for Sale for Chevy Silverado, GMC Sierra, Tahoe, Yukon, Suburban & Escalade

Quality by Design. Monster by Nature.

Stock replacement to 1000 HP competition builds. Every Monster 6L80 / 6L80E ships with a matched torque converter, is dyno tested, and is built in the USA with custom in-house parts including our Hyper Blue model pistons.

Since 2003 20+ years building transmissions
Built in the USA In-house custom parts & dyno tested
Up to 6 Year Warranty Unlimited miles on select builds
1-800-708-0087 Talk to a real Monster build expert
In Stock
$2,499
RoadReady 6L80 / 6L80E transmission and torque converter for Chevy Silverado GMC Sierra Tahoe Yukon Suburban, OEM stock replacement
Best for stock replacement

6L80 / 6L80E Transmission | RoadReady OEM Replacement | Stock HP

HP capacity Stock
  • OEM-quality replacement for stock power daily drivers and work trucks
  • Refreshed frictions, bushings, solenoids and seals
  • Factory-smooth shift feel with dependable street manners
  • For Daily drivers and OEM Vehicles only
  • 3 Year Warranty • Unlimited Miles
Shop RoadReady →
★ Most Popular
In Stock
$3,099
StreetMonster 6L80 / 6L80E transmission with HD billet converter and tow shift kit, Silverado Sierra Tahoe Yukon, +100 HP over stock
Best for mild tune & light tow

6L80 / 6L80E Transmission | StreetMonster Stage 1 | +100 HP

HP capacity +100 over stock
  • High-energy clutch pack for mild HP and bolt-on builds
  • Tow and pro shift kit, increased line pressure, firm crisp shifts
  • HD billet converter to cut out slip and reduce heat
  • Daily drivers, light to moderate towing, and tuned street trucks
  • 3 Year Warranty • Unlimited Miles
Shop StreetMonster →
✓ Best Value • 6 Yr Warranty
$3,799
SportMonster 6L80 / 6L80E transmission with HD billet converter and modified pump, 650 HP Chevy GMC truck SUV build
Best for heavy tow & built street

6L80 / 6L80E Transmission | SportMonster Stage 2 | 650 HP

HP capacity 650 HP
  • Increased capacity clutch pack for higher torque holding power
  • Modified pump and shift kit for firm precise shifts under load
  • HD billet converter strategy for reduced slip and lower temps
  • Heavy tow rigs, tuned trucks, and built street applications
  • 6 Year Warranty • Unlimited Miles
Shop 2WD → Shop 4WD →
$5,999
TrackMonster 6L80 / 6L80E transmission with billet multi disc converter and Hyper Blue pistons, 1000 HP competition build
Best for 1000 HP builds

6L80 / 6L80E Transmission | TrackMonster Stage 3 | 1000 HP

HP capacity 1000 HP
  • Increased capacity clutches and reinforced hard parts for max effort use
  • New Hyper Blue model pistons built in house for improved holding strategy
  • Billet multi-disc converter for maximum lockup holding power
  • Serious horsepower, drag, road race, and competition Chevy GMC builds
  • 1 Year Warranty • Unlimited Miles
Shop 2WD → Shop 4WD →

Still not sure which 6L80 / 6L80E you need?

The 6L80 / 6L80E is one of the most config-sensitive transmissions on the market. 2WD vs 4WD, year-correct TEHCM, and tow vs track requirements all matter. Call a real Monster build expert and we will match the right build to your truck or SUV before you buy.

✆ 800-708-0087 Mon to Fri 8am to 6pm EST, Sat open
Build comparison

What's inside each 6L80 / 6L80E build

RoadReady

Stock replacement

Best for getting a worn out Silverado, Sierra, Tahoe, Yukon, or Suburban back on the road with factory drivability.

  • OEM-style replacement strategy
  • Fresh frictions, bushings, solenoids, and seals
  • Reman Torque Converter
  • Best for stock trucks and daily duty use
StreetMonster

Mild power and towing

For drivers who need more holding control than a basic rebuilt 6L80, but do not need a max effort race build.

  • High energy clutch pack
  • Tow and pro shift kit with firmer shifts
  • Increased line pressure
  • HD billet converter to cut slip and heat
SportMonster

Heavy tow and built street

Designed for heavier vehicles, sticky tires, steeper gears, and trucks that see real towing or tuned street use.

  • Increased capacity clutch pack
  • Modified pump and shift kit
  • HD billet converter strategy
  • 2WD and 4WD options for trucks and SUVs
TrackMonster

Competition and 1000 HP

When the truck is far past factory intent, this is the build that targets the hardest launches and the heaviest lockup events.

  • Increased capacity clutches and reinforced hard parts
  • New Hyper Blue model pistons
  • Billet multi-disc converter
  • 2WD and 4WD options for serious horsepower builds
Common failures

Common 6L80 / 6L80E problems we address

The 6L80 / 6L80E is a strong 6-speed when temps and apply timing stay in check, but it has well-known wear points. Most "bad 6L80" stories are really TCC slip plus heat that destroys clutches over time. The right Monster build is designed to prevent the failure, not just replace the worn unit.

P0741 · P2769 · P2770

TCC slip and PWM lockup failure

The 6L80 torque converter clutch is sensitive to heat and PWM apply timing. Burnt TCC friction is one of the most common reasons a 6L80 ends up on a bench. Codes like P0741 (TCC stuck off) and P2769 / P2770 (TCC solenoid circuit) are typical flags. Our SportMonster and TrackMonster builds run an HD billet or multi-disc converter strategy to resist burn through under towing and tune use.

P0776 · P0777

3-5-R and 4-5-6 clutch wear

The 3-5-R and 4-5-6 elements are heat and timing sensitive. As clutch material breaks down, you see flare, slip, or harsh re-engagement under load. P0776 and P0777 (pressure control solenoid B performance) often appear once clearance opens up. Our higher tiers add clutch capacity, revise clearances, and tighten hydraulics to hold apply pressure cleanly.

In-house • TrackMonster

Piston wear & the Hyper Blue Pistons

Repeated high torque events punish the apply pistons, especially in tuned and high horsepower 6L80 builds. Our new Hyper Blue model pistons are built in house for the TrackMonster as part of our increased capacity clutch strategy. They are one of the biggest reasons our 1000 HP builds survive the hardest competition launches.

P0842 · P0843

Pump and pressure regulator wear

The 6L80 pump can lose pressure as wave plates and stator support bushings wear. P0842 / P0843 (transmission fluid pressure switch A circuit) and soft shifts under load are typical signs. SportMonster and TrackMonster builds use a modified pump and shift kit strategy to restore proper pressure control under heat and high torque.

Install critical

Cooler contamination after a previous failure

Debris trapped in the transmission cooler and lines is the number one cause of comeback failures on any 6L80 / 6L80E install. When a converter or clutch burns up, metallic particles coat the cooler and return to kill the new unit. Our install checklist requires flushing or replacing the cooler and both lines, no exceptions.

TEHCM & reprogramming

Programming and adaptive learn

Every 6L80 / 6L80E we ship is built with year-correct solenoids and TEHCM configuration, but a full reprogramming is required after install. Skipping the reprogramming or the adaptive learn drive cycle is one of the fastest ways to ruin a fresh transmission with harsh shifts and unnecessary clutch wear.

Fitment by year

6L80 / 6L80E by model year for Chevy & GMC trucks and SUVs

The 6L80 (RPO MYC) appears in a wide range of GM 1500-class trucks and SUVs. Always verify by RPO label, year, and 2WD vs 4WD configuration before ordering. The 6L90 (RPO MYD) is a different transmission and is not covered on this page.

2007 to 2013 GM 1500 trucks & full size SUVs

Early 6L80 trucks and SUVs are common stock replacement and tow upgrade candidates. If your Silverado, Sierra, Tahoe, Yukon, Suburban, or Escalade in this range is still on the original transmission, a remanufactured or upgraded 6L80 / 6L80E is often a smarter long term move than another minimal rebuild.

2014 to 2018 GM 1500 trucks & full size SUVs

This is one of the highest value year groups for the 6L80 / 6L80E. Many 4.3L and base 5.3L 1500 trucks use it. StreetMonster and SportMonster are typically where these owners land when tire size, trailer weight, or added power push the truck beyond stock expectations.

2019 to 2021 GM 1500 trucks & SUVs

Later 1500-class trucks and SUVs still need the same buying logic. Some configurations moved to 8L90 (M5U / M5X) or 10L80 (MQB / MQC), so verify RPO before ordering. Many 4.3L builds in this range still require the 6L80.

Model year Vehicle Common engine(s) RPO check
2007 to 2013 Silverado / Sierra 1500, Tahoe, Yukon, Suburban, Escalade V8 packages (varies by trim) MYC = 6L80. Confirm on the service-parts label.
2014 Silverado / Sierra 1500 (new gen), full size SUVs 4.3L / 5.3L (and some 6.2L builds) MYC is the common 6-speed code on 6L80-equipped 1500s.
2015 to 2018 Silverado / Sierra 1500 base & some trims, full size SUVs 4.3L / 5.3L (base & some trims) MYC = 6L80. Many 6.2L (and some higher trim 5.3L) use 8L90 (M5U / M5X).
2019 Silverado / Sierra 1500 (carryover Limited + new body) 4.3L plus some 5.3L (especially carryover / Limited) MYC on some builds. Others may be 8L90 (M5U / M5X) or 10L80 (MQB / MQC).
2020 to 2021 Silverado / Sierra 1500 (select configs) 4.3L plus some 5.3L configurations MYC on some builds. Others may use 8L90 or 10L80. Verify before ordering.
Quick RPO cheat sheet:
• MYC = 6L80 (6-speed) — this page
• M5U / M5X = 8L90 (8-speed)
• MQB / MQC = 10L80 (10-speed)
• MYD = 6L90 (HD 6-speed, common in 2500/3500 gas)
• MW7 = Allison 1000 (older Duramax HD)
• MGM / MGU = Allison-branded 10-speed (newer HD)

Best practice: verify (1) RPO code, (2) 2WD vs 4WD output, and (3) year/electronics before ordering.

Fitment should always be confirmed by VIN, RPO label, and actual vehicle configuration before purchase.

Protect your investment

Recommended add-ons for any 6L80 / 6L80E install

Cooling and fluid strategy are the difference between a 6L80 / 6L80E that lasts and one that comes back. Pair any build with these add-ons.

Transmission Cooler

Drop temps and protect 3-5-R / 4-5-6 clutches under load.

Cooling
6L80E Deep Aluminum Pan

Extra fluid capacity and better heat rejection for tow and track use.

Capacity
Full Synthetic ATF

Start clean after install and set level properly at temperature.

Fluid
6L80E TEHCM

Year-correct electronics. Reprogramming required after install.

Electronics

6L80 / 6L80E transmission buying guide

If you are comparing a rebuilt 6L80, a remanufactured 6L80E, and a full upgraded transmission for your Chevy or GMC, start with how the truck is actually used. A stock daily Silverado has very different needs than a tuned LS swap, a heavy tow Yukon, or an Escalade with bigger tires and steeper gears. Price matters, but so do converter strategy, line pressure behavior, clutch holding capacity, and cooling.

DEXRON-VI only

The correct 6L80 / 6L80E transmission fluid is DEXRON-VI. Using the wrong fluid affects clutch apply timing, shift behavior, and long term durability. After installation, verify level at operating temperature using the correct procedure for your vehicle, and replace the filter.

Why the converter matters so much

On a 6L80, the torque converter is one of the biggest durability factors. Heat, towing load, added torque, and PWM lockup demand can punish a weak converter quickly. This is where TCC slip and burn through come from. That is why all four builds include a matched converter, and SportMonster and TrackMonster step up to HD billet and multi-disc strategies.

Installation checklist

  • Flush or replace the cooler and both lines, no exceptions
  • Confirm strong cooler return flow before final install
  • Fill only with DEXRON-VI
  • Verify final fluid level warm using the correct procedure
  • Perform a full reprogramming with a capable scan tool
  • Run an adaptive learn drive cycle with light throttle upshifts
  • Recheck for leaks and correct operation after heat cycles

6L80 vs 6L90 vs 8L90 vs 10L80

The 6L80 (RPO MYC) is the standard 6-speed in many GM 1500 trucks and full size SUVs. The 6L90 (RPO MYD) is a heavier duty cousin used in 2500 and 3500 gas applications and is a different transmission. 8L90 (M5U / M5X) and 10L80 (MQB / MQC) appear in newer 1500 configurations. Verify by RPO before ordering.

2WD vs 4WD

The 2WD vs 4WD difference comes down to the output and tailhousing setup that mates to your transfer case. The internals are similar but fitment must match. SportMonster and TrackMonster ship with both 2WD and 4WD options. If you are changing transfer case or gearing, tell us so we can match the package correctly.

FAQ

6L80 / 6L80E transmission FAQs

Is the 6L80 a good transmission?
In stock form the 6L80 / 6L80E is a solid 6-speed for trucks and SUVs, but it is heat-sensitive under towing, big tires, heavy vehicles, or aggressive tuning. Most "bad 6L80" stories are really converter slip plus heat that leads to clutch damage over time. A correct converter strategy plus proper cooling addresses that directly.
Is the 6L80 the same as the 6L80E?
Yes. In everyday GM truck and SUV searches, 6L80 and 6L80E usually refer to the same 6-speed automatic transmission with RPO code MYC. Many customers search both names, so the safest way to order is to verify the RPO label, model year, engine, and 2WD or 4WD configuration before choosing a build.
What vehicles use the 6L80 / 6L80E transmission?
The 6L80 (RPO MYC) is commonly found in Chevy Silverado 1500, GMC Sierra 1500, Tahoe, Yukon, Suburban, Escalade, and a number of other GM applications across model years roughly 2007 through 2021 depending on engine and trim. Always verify by RPO label before ordering because some 1500 configurations also used 8L90 or 10L80.
Is a torque converter included with these 6L80 / 6L80E builds?
Yes. Each complete build on this page includes a matched lockup converter. SportMonster and TrackMonster step up to HD billet and multi-disc converter strategies. Converter quality directly affects heat, lockup control, and long term durability.
What fluid does a 6L80 / 6L80E use?
Use DEXRON-VI. It is the correct fluid choice for shift quality, clutch apply behavior, and durability. Capacity varies with pan and converter, so verify fluid level warm using the correct procedure for your vehicle.
Do I need programming after a 6L80 / 6L80E install?
Yes. A full reprogramming appropriate to your year and build is required after install. Then run an adaptive learn drive cycle with light throttle upshifts and gentle coastdowns so the TCM seats correct shift adapts. Skipping this step is one of the fastest ways to ruin a fresh transmission.
What are the most common 6L80 / 6L80E failures?
The most common failures include TCC slip and PWM lockup burn through, 3-5-R and 4-5-6 clutch wear, pump and pressure regulator wear, piston wear under high torque, and cooler contamination after a previous failure. Those are exactly the issues a better matched build and proper install process are meant to address.
What is the difference between a rebuilt 6L80 and an upgraded build?
A basic rebuilt transmission is often focused on getting the unit working again. An upgraded build is selected around actual vehicle use and may add better converter strategy, stronger pressure control, increased clutch capacity, or stronger hard parts depending on the level chosen.
How do I know if I have a 6L80 or a 6L90?
Check the RPO label on the vehicle. MYC = 6L80, MYD = 6L90. They look similar from the outside but have different internal capacity and hard part dimensions. They are different transmissions and should not be ordered based on guesswork.
2WD vs 4WD on a 6L80 / 6L80E, what is different?
The 2WD vs 4WD difference is in the output and tailhousing configuration that mates to the transfer case. Internals are similar but fitment must match the truck. SportMonster and TrackMonster offer both 2WD and 4WD options.
I am looking for a 6L80 / 6L80E rebuild kit with torque converter, what should I actually buy?
Most rebuild kits are seals and frictions only. The converter is often sold separately, and that is where many failures start. If you are doing a DIY rebuild, plan for a quality converter plus any hard parts your unit needs. If you want a turnkey fix, our packages already include a matched lockup converter built for the tier.
Should I choose RoadReady, StreetMonster, SportMonster, or TrackMonster?
Daily stock power: RoadReady. Mild bolt-ons or light towing: StreetMonster. Built street, heavier vehicles, real towing, or sticky tires: SportMonster. Competition or 1000 HP class builds: TrackMonster.
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