What year did they stop making 4L80E transmissions?

[DelGia]

General Motors stopped production of the 4L80E transmission with the end of the 2009 model year. This robust automatic transmission had an exceptionally long production run, serving in GM's heavy-duty trucks and vans for nearly two decades since its introduction in 1991.

The 4L80E, known for its strength and reliability, was a mainstay in the GM C/K truck lineup (like the Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500) as well as in full-size vans and commercial applications. Its final applications were in the 2009 model year vehicles before GM transitioned to newer six-speed automatic transmissions, such as the 6L90, for subsequent model years.

Market data and service records from major automotive databases consistently list the 2009 model year as the cutoff. It's important to distinguish that the 4L80E was phased out of new vehicle production in 2009. However, genuine GM replacement units and a vast supply of remanufactured transmissions have been available ever since through the OEM and aftermarket parts networks, ensuring continued support for repairs.

A common point of discussion is the 4L85E variant. This was a fortified version of the 4L80E introduced later, featuring stronger internal components like a five-pinion planetary gearset. While it shared the core design and external dimensions, the 4L85E was rated for higher torque. Its production also concluded alongside the standard 4L80E after the 2009 model year, meaning all references to the 4L80E's end date apply equally to the 4L85E.

The following timeline summarizes the key dates:

Key Event	Model Year	Notes
Introduction	1991	Debuted in GM's C/K-platform heavy-duty trucks.
Variant Introduction	(Early 2000s)	The heavier-duty 4L85E variant entered production.
Final Model Year	2009	Last year the 4L80E/4L85E was installed in new GM vehicles.
Successor	2010+	GM widely adopted the 6L90 6-speed automatic transmission.

For anyone shopping for a used vehicle or a replacement transmission, identifying a unit from a 2009 or earlier model is the key indicator. The transmission's control electronics and external markings remained consistent throughout its life, making the vehicle's model year the most reliable factor for dating the transmission itself.

[FaithMarie]

As a mechanic who’s worked on these for twenty years, I can tell you they quit putting them in new trucks after 2009. That was the last model year you’d find one fresh off the assembly line. Everything 2010 and up moved to a six-speed.

Don’t worry about finding parts, though. The aftermarket is flooded with rebuild kits and even complete remanufactured units. It’s one of the easiest transmissions to keep on the road, which is why so many folks seek out the 2009 and older heavy-duty trucks.

[LeEmmanuel]

I manage inventory for a major transmission remanufacturer, so I deal with core returns and parts sourcing daily. Our system and all supplier data are very clear: the official end of production for the 4L80E and its 4L85E sibling was 2009.

This means the newest possible core we can receive from a vehicle is from a 2009 model. We still get tons of them. It’s a testament to how many are still in service. The date is crucial for us because parts compatibility is generally consistent across all model years, but we always verify the vehicle year to ensure we ship the correct reman unit.

If you’re ordering a replacement, the supplier will ask for your vehicle’s year. For a 2009 or older application, you’ll get a 4L80E/85E. For 2010+, it’s a completely different transmission.

[Katniss]

You’re looking at 2009. That’s the final year.

I just went through this searching for a used transmission for my 2008 Silverado 3500. Every seller, salvage yard, and parts store confirmed the same cutoff. The 2009 models from Chevy or GMC are the newest vehicles that will have one from the factory.

It simplifies the search. You know any truck or van from 1991 through 2009 is a potential donor. Just focus on the condition and mileage of the used unit, not wondering about the year.

[AustinDella]

I’ve restored several classic GM trucks and the information is consistent across enthusiast forums, repair manuals, and parts catalogs: production ceased for the 2009 model year. My own 2006 GMC Savana van has one, and I specifically sought out a low-mileage unit from a 2007-2009 vehicle for my swap because they were the most recent available.

The 4L85E, which is essentially a heavy-duty package for the 4L80E, shares the same fate. They were discontinued together. When you’re browsing online listings, any transmission advertised as being from a 2010 or newer vehicle is not a genuine 4L80E/85E—it’s likely a 6L90.

This end date is useful knowledge. It tells you that technology moved on, but also that there’s a defined 18-year pool of vehicles (1991-2009) you can pull parts from, which makes ownership very sustainable.