GM 6 speed 6L80E 6L90E Transmission

High-Performance, Heavy-Duty Transmissions Built for Power and Reliability

If you’re in the market for a powerful, durable, and versatile automatic transmission, look no further than the GM 6 speed 6L80E 6L90E Transmission. Designed for heavy-duty applications, these electronically-controlled transmissions are widely used in both consumer and commercial General Motors vehicles, and they’ve earned a reputation for strength, adaptability, and long-term performance.

Whether you’re rebuilding your truck, upgrading a performance vehicle, or seeking a reliable replacement for a failing unit, investing in a 6L80E or 6L90E is a smart move. And right now, we have reliable, remanufactured and brand-new GM 6 speed 6L80E 6L90E Transmission for sale—tested, warrantied, and ready to ship nationwide.

What is the GM 6 speed 6L80E 6L90E Transmission?

The GM 6 speed 6L80E 6L90E Transmission are part of GM’s Hydra-Matic 6-speed automatic transmission family. Introduced in 2006, the 6L80 was developed to handle higher torque, improve fuel economy, and provide smoother shifting for a range of vehicles.

Key Applications:

These GM 6 speed 6L80E 6L90E Transmission are found in a variety of GM vehicles, including:

• Chevrolet Silverado / GMC Sierra (1500–3500)

• Chevrolet Camaro SS

• Chevrolet Corvette C6 / C7

• Cadillac Escalade

• GMC Yukon / Yukon XL

• Chevrolet Tahoe / Suburban

• Express / Savana vans

• Holden and HSV models (Australia)

They’re also commonly used in restomod builds, LS swaps, and performance upgrades due to their electronic control, gear ratio flexibility, and wide aftermarket support.

What’s the Difference Between GM 6 speed 6L80E 6L90E Transmission?

While both transmissions share the same basic design, there are some critical differences that buyers should understand.

6L80E Overview:

• Designed for light- to medium-duty applications

• Torque capacity: Up to 664 lb-ft

• Case length: Shorter than 6L90E

• Weight: Approximately 195–210 lbs

• Common in SUVs, half-ton pickups, sports cars

6L90E Overview:

• Heavy-duty version of the 6L80

• Torque capacity: Up to 738 lb-ft

• Reinforced internals and extended case

• Heavier-duty clutch packs and planetary gears

• Common in 2500/3500 series trucks and high-output applications

The 6L90E is your go-to if you’re towing, hauling, or pushing serious power. If you’re working with a high-horsepower build or diesel application, the 6L90E is the stronger choice.

Benefits of the GGM 6 speed 6L80E 6L90E Transmission

6-Speed Performance

These transmissions feature six forward gears and one reverse gear, allowing for better fuel economy and performance by maintaining optimal RPM ranges at various speeds.

Improved Fuel Efficiency

Compared to 4L60E or 4L80E units, the GM 6 speed 6L80E 6L90E Transmission offer better fuel efficiency due to advanced gear ratios and torque converter lockup capability.

Advanced Electronics

Fully electronically controlled, with adaptive learning and compatibility with GM’s TCM systems. This makes tuning and integration with modern ECUs seamless.

Built for Torque

Factory-rated for up to 738 lb-ft, and capable of handling more with performance upgrades, these transmissions are ready for demanding applications.

1. Aftermarket & Tuning Support

Large community and vendor support for upgrades, tuning, converters, coolers, and swap kits.

Why Buy from Us?

We take pride in providing high-quality GM 6 speed 6L80E 6L90E Transmission that meet or exceed OEM specifications. Whether you’re a professional shop or a DIY enthusiast, our transmissions are rigorously tested and backed by warranty.

What You Get:

• Remanufactured or New GM 6 speed 6L80E 6L90E Transmission

• Fully dyno-tested prior to shipping

• Updated with latest OEM revisions

• Upgraded clutches, seals, bushings, and solenoids (in reman units)

• Compatible torque converter available

• Plug-and-play options

• Nationwide shipping available

Warranty Coverage

• 1–3 year limited warranty (depending on model and build tier)

• Warranty covers parts and labor in most cases

• Optional extended warranty available

Customization and Performance Builds Available

Need a transmission that can handle 800+ horsepower? We offer stage 1, 2, and 3 performance builds for both the GM 6 speed 6L80E 6L90E Transmission. These high-performance versions include:

• Hardened input shafts

• Upgraded clutch packs

• Heavy-duty sprags and planetary gears

• High-performance torque converters

• Improved cooling systems

• Tuned valve bodies for quicker shifts

Let us know your application and goals—we’ll build the perfect transmission for your street car, off-road rig, race car, or towing setup.

Installation Support and Compatibility

 Compatibility:

Not sure which transmission you need? Our team can help match the correct transmission to your:

• VIN or OEM part number

• Engine and drivetrain combo

• Vehicle year, make, and model

• Performance or towing needs

 Installation Support:

We also offer:

• Detailed installation instructions

• Tuning guidance

• Torque converter recommendations

• Cooling solutions

Need a complete swap kit for an older vehicle or LS swap? Ask us about our GM 6 speed 6L80E 6L90E Transmission swap packages with harnesses, controllers, and driveshaft adapters.

Prices and Availability

We keep a rotating stock of popular models and configurations. Prices vary depending on:

• Transmission model (6L80 vs. 6L90)

• New vs. remanufactured

• Performance level (OEM, Stage 1–3)

• Warranty duration

 Example Pricing:

• Remanufactured 6L80E (Standard Build): $2,195–$2,595

• Remanufactured 6L90E (HD Build): $2,695–$3,295

• Stage 2 6L90E Performance Build: Starting at $3,895

• Torque Converters: $295–$795

• Complete Swap Packages: Contact us for pricing

Call or message us for current inventory, shipping quotes, and discounts on multi-unit purchases.

Why the GM 6 speed 6L80E 6L90E Transmission is a Top Choice for Builders and Enthusiasts

The GM 6 speed 6L80E 6L90E Transmission series are quickly becoming the go-to transmissions for LS swap enthusiasts and builders looking to replace outdated 4-speed automatics. They provide the perfect blend of:

• Power handling

• Modern electronic control

• Highway drivability

• Upgrade potential

With over a decade of proven reliability behind them, plus massive aftermarket support, these transmissions are a smart long-term investment for any serious build.