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Home / Shop / Hard Parts / 6L80E Valve Body 2010-Up - Remanufactured Casting 0955 0945
Hard Parts

6L80E Valve Body 2010-Up - Remanufactured Casting 0955 0945

$410.00
In stock • ships from the USA • qualifies for FREE shipping

6L80E valve body for 2010-Up, remanufactured and ready to install. Ships fast from the USA.

Fits these transmissions
Secure Stripe checkout • free shipping over $100 • 30-day returns
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Ships from the USA
30-day returns

About this product

If a 6L80E-equipped truck or SUV from 2010 or newer is binding between gears, starting out in the wrong gear, or throwing a shift-pressure code, the fastest way to buy the right replacement valve body is to read the casting numbers off the unit that is already in the vehicle. This listing is a remanufactured 6L80E valve body built to match castings 0955 and 0945, the identification numbers GM stamped into the main body and separator plate on a large share of 2010-and-up production.

Why casting numbers, not just a model year

GM revised the 6L80E valve body more than once inside the 2010-and-up window, changing bore sizes, check-ball locations and the separator plate gasket pattern along the way. Two trucks built two years apart can carry different castings, and two trucks built the same year can also differ depending on the plant and build date. The casting number cast into the housing, not the vehicle's model year alone, is what actually determines whether a replacement valve body will bolt up and seal correctly, which is why this listing is built and sold against castings 0955 and 0945 specifically.

What this valve body does inside the 6L80E

The valve body is the hydraulic control center of the transmission. It meters pump pressure through a field of precision bores and spool valves to apply the clutch packs and bands in sequence, and on the 6L80E it also houses the shift and pressure control solenoids the computer uses to time every shift. When the regulator and boost valve bores wear, the symptoms show up as harsh or soft shifts, slipping, bind-ups, wrong-gear starts and stored solenoid performance codes rather than a single obvious failure.

Symptoms that point to this part

For a full breakdown of which code maps to which internal circuit, see our 6L80 valve body problems guide.

Rule out the pump and solenoids first

A worn pump can mimic valve body symptoms by starving the regulator circuit of consistent pressure, and tired solenoids can produce the same codes a worn valve body bore does. Our 6L80 pump failure guide and 6L80 shift solenoid guide cover how to test each one separately before you commit to a valve body replacement.

Fitment: casting 0955 and 0945, 2010-Up

Pull the old valve body and read the casting number off the main housing and separator plate before ordering. If your numbers read 0955 or 0945, this unit is built to match. If they do not, send us your year, make, model and VIN, or a photo of the casting numbers, and we will point you to the correct listing on the 6L80 parts page instead of guessing from the model year alone.

Install notes

Drain and drop the pan, disconnect the internal harness connector and manual valve link, and lower the valve body straight down so the check balls and accumulator springs stay in their bores. Fit a new seal and gasket kit at the same service, torque the bolts in GM's sequence, and refill with Dexron VI. Let the computer relearn shift adapts over the first several drives afterward rather than judging shift feel on the first trip.


Specifications

Transmission6L80E
Year Range2010-Up
ConditionRemanufactured / updated
ShippingShips from the USA

Complete the job: parts that go with this

Doing this repair right usually means replacing these at the same time. Same transmission, ships together.

6L80 Shift Kit
6L80 Shift Kit
$313.99

6L80E Valve Body 2010-Up - Remanufactured Casting 0955 0945: common questions

How do I know if my 6L80E matches castings 0955 or 0945?

Drop the pan and read the numbers cast into the main valve body housing and the separator plate. If they read 0955 or 0945, this listing matches. If not, send us a photo or your year, make, model and VIN and we will find the correct one.

Why does fitment depend on casting number instead of year?

GM revised the 6L80E valve body more than once within the 2010-and-up window, changing bore sizes and the separator plate pattern. The casting number stamped into the housing is what determines fit, not the model year by itself.

Does this include the solenoids?

No, this is the valve body casting assembly, remanufactured and tested. If your solenoids are original and already worn, test them separately before assuming the valve body alone will clear the code.

My shifts are fine but I have a stored solenoid performance code. Could it still be the valve body?

Yes. Worn regulator or boost valve bores can produce intermittent solenoid performance codes without an obvious shift complaint. Our 6L80 valve body problems guide covers how each code maps to a specific circuit.

What fluid does the 6L80E use?

Dexron VI ATF. Change the fluid and filter at the same time you install the valve body so old debris does not circulate through the new unit.


Repair guides for this job

Sources
  1. Sonnax — GM 6L45, 6L50, 6L80, 6L90 Valve Body Layout. Exploded location guide identifying each clutch regulator valve, boost valve, and bore plug referenced in the symptom breakdown above. www.sonnax.com/tech_resources/1052-gm-6l45-6l50-6l80-6l90-valve-body-layout
  2. Sonnax — Remanufactured Valve Body GM6L80E. Lists the complaints a corrected 6L80E valve body addresses, including burnt clutches, harsh/bump/flare shifts, bind-ups and wrong-gear starts. www.sonnax.com/parts/4621-remanufactured-valve-body
  3. General Motors — Preliminary Information PI1393B (June 2015, NHTSA-hosted). Backs DTC P0741 on 6L80 and 6L90 units from damaged torque converter clutch material, and the instruction to check line pressure before replacing parts. static.nhtsa.gov/odi/tsbs/2015/MC-10113709-9999.pdf
  4. Transmission Digest — GM 6L80 Transmission Early Failure Issues & Fixes. Backs the pattern of valve body and internal updates GM made across 6L80 production and why casting-level identification matters when sourcing parts. www.transmissiondigest.com/gm-6l80-transmission-early-failure-issues-fixes/

6L80E Valve Body 2010-Up - Remanufactured Casting 0955 0945

$410.00
In stock • ships from the USA • FREE shipping • 30-day returns

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