Used 4L80E Transmission for Sale | GM Heavy-Duty 4-Speed Automatic with Overdrive (TH400 Successor)

$749.00

Product Overview & Specifications

In Stock, 2WD and 4WD Configurations Available
Free Shipping to All 50 States via Freight Pallet, 5 to 10 Business Days
All 4 Forward Gears and Reverse Function Tested
Lockup Torque Converter Operation Verified
Configuration Confirmed (2WD vs 4WD)
Bellhousing Pattern Confirmed (Gas vs Diesel Bolt Pattern)
Output Shaft Spline Count Documented
Donor Application Documented (Silverado HD, Hummer H1, Express, etc.)
100% Fitment Verified Before Every Order Ships
15 Day Replacement Warranty on Internal Defects

100% Fitment Assistance

15 Days Replacement Warranty

Free & Fast Shipping

Category: Transmission

Description
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Reliable 4L80E Transmission for Sale

The 4L80E transmission is for sale, a top-notch heavy-duty 4-speed automatic from General Motors. This is the perfect transmission if you’re on the hunt for a reliable and cost-effective replacement for your Silverado HD, Sierra HD, Suburban 2500, Hummer H1, or any GM heavy-duty truck application. The 4L80E is also a popular choice for performance V8 swap projects requiring an automatic transmission that can handle big-block torque.

The TH400 Heritage

The 4L80E is essentially the electronic-control evolution of the legendary GM Turbo-Hydramatic 400 (TH400) gearbox. The TH400 was introduced in 1964 and powered GM heavy-duty trucks, Cadillacs, and performance vehicles for nearly three decades. The 4L80E retains the TH400’s robust mechanical architecture (dual-stage planetary gear set, hardened steel internals, deep transmission case) while adding modern electronic shift control and lockup torque converter for fuel economy and emissions compliance. This means the 4L80E inherits the TH400’s legendary durability while adding modern overdrive and computer control.

Why Choose a Used 4L80E Transmission?

The 4L80E transmission for sale is renowned for its power and reliability, making it a favorite among automotive enthusiasts and professionals alike. Here are some key reasons to consider this transmission:

Durability: Built to handle high horsepower and torque, with stock ratings of 440 lb-ft and performance-built variants exceeding 885 lb-ft

Performance: Known for its robust nature and ability to take abuse without failure

Versatility: Compatible with a wide range of GM vehicles, available in both 2WD and 4×4 configurations

Cost-Effective: A used unit provides great value for money without compromising on quality

Upgradable: Strong aftermarket support with valve body modifications, billet hard parts, and performance torque converters available

In-Stock and Ready to Ship: Fast shipping ensures you get your transmission quickly

The 4L80E Transmission Fits These GM Vehicles:

Chevrolet Silverado 2500 / 3500 (1991 onward, including HD trim)

GMC Sierra 2500 / 3500 (1991 onward, including HD trim)

Chevrolet Suburban 2500 (heavy-duty trim)

GMC Yukon XL 2500 (heavy-duty trim)

Chevrolet Express 2500 / 3500 (full-size cargo van)

GMC Savana 2500 / 3500 (full-size cargo van)

Chevrolet Kodiak C4500 / C5500 (medium-duty truck)

GMC TopKick C4500 / C5500 (medium-duty truck)

Hummer H1 (1992 to 2006, with various engines)

GM Medium-Duty Commercial Vehicles

Engine Pairings

The 4L80E is compatible with a wide range of GM engines:

Signs You Need a Replacement 4L80E

Slipping in any forward gear or reverse under load

Failure to engage 4th gear (overdrive)

Failure of the lockup torque converter to engage

Hard or harsh shifting that ECM diagnostic codes confirm is mechanical

Fluid leaks at the valve body, output shaft, pump area, or rear seal

Burnt or contaminated transmission fluid (smell, color, debris)

Code P1870 (TCC slip excessive) or other 4L80E-specific TCM codes

Donor truck has been totaled and the transmission is being moved

Common 4L80E Maintenance Considerations

Fluid changes: Every 30,000 to 50,000 miles for normal duty; more frequently for towing, trailering, or performance applications

Filter and pan gasket: Replace at every fluid change. Use deep transmission pan with extra fluid capacity for towing applications.

Lockup torque converter clutch (TCC): TCC clutch wear is a documented 4L80E concern at high mileage.

Internal valve body wear: Performance valve body upgrades (TransGo, Sonnax) are popular for trucks doing heavy towing or performance applications.

type	Automatic Transmission
Model	4L80E
maker	General Motors
speeds	4 forward gears with overdrive (4th = 0.75:1 OD) + Reverse
torque-capacity	440 lb-ft to 885 lb-ft
overall-length	26.4 inches
fluid-capacity	17.5 quarts
fluid-type	Dexron III ATF
gear-ratios	1st: 2.48:1, 2nd: 1.48:1, 3rd: 1.00:1, 4th: 0.75:1 (overdrive), Reverse: 2.07:1
stall-speed	1, 200 RPM, 800 to 2
weight	135 lbs (per live page)
compatibility	1991 Chevy GMC 4L80E Transmission
price	$749.00

FAQs

How much does it cost to rebuild a 4L80E transmission?

Rebuilding can range from $1,300 to $1,800 for a basic rebuild, $2,500 to $4,500 for a moderately upgraded rebuild, and $4,500 to $7,500+ for a fully built performance rebuild (Performabuilt, ATS, Suncoast, etc.). Used units range from $500 to $1,200 for a serviceable core.

Which is better: 4L60E or 4L80E?

The 4L80E is preferred for high-torque applications including diesel trucks, big-block V8s, and heavy towing. It is essentially a TH400 with overdrive and electronic control, making it extremely robust. The 4L60E is more common, less expensive, and easier to find, but it has significantly lower torque capacity (~360 lb-ft stock) compared to the 4L80E. For 1/2-ton trucks with V6 or small-block V8 and light duty, the 4L60E is adequate. For 3/4-ton, 1-ton, diesel, or performance V8 applications, the 4L80E is the right choice.

Is the GM 4L80E a good transmission?

Yes, it is renowned for its performance, reliability, and ability to handle high power. Built on the legendary TH400 architecture with electronic control and overdrive added, the 4L80E is one of the most respected GM automatics. It powers Hummer H1 military vehicles, 8.1L Suburbans, Duramax diesels, and countless performance V8 swap projects.

What vehicles are compatible with the 4L80E transmission?

The 4L80E transmission is compatible with a wide range of GM vehicles, especially those requiring high-torque performance: Silverado / Sierra HD, Suburban / Yukon XL HD, Express / Savana, Kodiak / TopKick, and Hummer H1. It is also a popular swap transmission for performance V8 builds requiring an automatic that can handle big-block torque.

Do you offer installation support?

Yes, we provide detailed installation guides and offer phone tech support to assist you with all your installation needs. Critical considerations include: TCM compatibility, lockup torque converter wiring, transmission cooler sizing for towing applications, and crossmember modifications if swapping into non-original chassis.

What ATF should I use?

Dexron III ATF is the original spec. Modern Dexron VI is generally backward-compatible. Some operators use synthetic ATF for extended drain intervals and improved cold-temperature performance. For heavy towing, premium-grade synthetic ATF (Royal Purple, Amsoil, Mobil 1) is recommended.