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4L80E Valve Body 2003

$202.99
In stock • ships from the USA • qualifies for FREE shipping

4L80E Valve Body 2003, remanufactured and ready to install. Fits the 4L80E. 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

A 2003 Chevrolet or GMC 2500/3500, Suburban 2500, or van running the 4L80E that has started slipping between gears, shuddering under light throttle at cruise, or storing a solenoid-related code is usually describing wear inside the valve body itself. This remanufactured valve body is built for the 2003 model year specifically, the last year before GM's next casting update rolled out for 2004 and later units.

What the valve body does in the 4L80E

The valve body is the hydraulic brain of the 4L80E. It routes line pressure through precision bores and spool valves to apply each clutch and band, and it carries the shift and pressure control solenoids that the transmission control module fires to time every shift. One of the most common wear points on 4L80E units of this age is the actuator feed limit valve, which regulates the feed pressure that reaches the pressure control and TCC solenoids; that valve's bore has a large reaction area that side-loads under normal EPC solenoid oscillation, and the bore wears oversize over years of use.

Symptoms this fixes

Our 4L80E valve body wear and bench fix guide covers how actuator feed limit valve bore wear produces exactly this slip-and-shudder pattern even after the solenoids themselves have been swapped.

How to confirm it before you buy

If solenoids have already been replaced once and the shudder or slip codes keep returning, that is the strongest sign the bore itself, not the solenoid, is the real failure. A shop with the right equipment can vacuum test the valve body's critical wear areas directly rather than guessing from symptoms alone, which is the more reliable way to confirm a worn casting before paying for a replacement.

Fitment: 2003 4L80E

This valve body is built for the 4L80E as installed in 2003 model year Chevrolet and GMC 2500/3500 pickups, Suburban 2500, and Express/Savana vans. 2003 sits at the edge of a casting and solenoid running change that GM carried into the 2004 model year, so confirm your old unit's casting number and connector count against this listing, or send your year, model, and VIN before ordering if there is any doubt. Every 4L80E part we carry is grouped on the 4L80E parts page.

Install notes

Drop the pan and change the fluid and filter at the same time the valve body goes in, so debris from the old unit never reaches the new solenoids and bores. Torque the valve body bolts in the GM-specified sequence, refill with Dexron VI, and run the transmission control module's adaptive shift relearn once the truck is back together; skipping the relearn is a common reason a freshly installed valve body still shifts rough for the first few drives. If the original complaint included a stored pressure control solenoid code, pair this with a pressure control solenoid for 1996-2004 rather than reusing the old one on the new casting, and see our 4L80E common problems guide for the other failures that commonly show up alongside bore wear.


Specifications

Fits4L80E 2003
Part typeValve Body
ConditionRemanufactured
BrandOEM
ShipsFrom the USA
Warranty1-year

Complete the job: parts that go with this

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

4L80E Shift Kit
4L80E Shift Kit
$111.99

4L80E Valve Body 2003: common questions

Is this valve body specific to the 2003 model year only?

It is built for the 4L80E as installed in 2003 GM 2500/3500 trucks, Suburban 2500, and Express/Savana vans. 2003 sits right at a casting and solenoid running change GM carried into 2004, so match your old unit's casting number and connector count, or send your year, model, and VIN if unsure.

Will this fix a TCC shudder at cruise?

In most cases yes, when the shudder traces back to wear inside the valve body's regulating bores rather than converter or fluid condition. Confirm fluid condition first since burnt fluid points at a different problem.

I already replaced the solenoids and the code came back. Will a new valve body help?

That pattern points at bore wear, commonly the actuator feed limit valve bore, rather than a bad solenoid, which is exactly what replacing the valve body addresses.

Does this include solenoids?

Check the listing specs for this exact valve body for what is included. If a pressure control or TCC solenoid code was part of the original failure, pair it with a separate solenoid.

Do I need to do anything after installing it?

Yes. Change the fluid and filter at the same time, torque the valve body bolts to spec, and run the transmission control module's adaptive shift relearn.

What fluid does the 4L80E use?

Dexron VI ATF.


Repair guides for this job

Sources
  1. Sonnax — Actuator Feed Limit Valve Kit 34200-16K. Backs the actuator feed limit valve's large reaction area, side-loading wear mechanism under EPC solenoid oscillation, and the resulting pressure control and TCC solenoid symptoms described on this page. d2q1ebiag300ih.cloudfront.net/uploads/part/1990/34200-16K-IN.pdf
  2. Sonnax — Uncovering the Root Cause of Pressure Complaints: The Critical Role of Solenoid Modulator & AFL Valves. Backs the function of the actuator feed limit valve and how high or low AFL feed pressure causes the shift and TCC symptoms covered here. www.sonnax.com/tech_resources/1208-uncovering-the-root-cause-of-pressure-complaints-the-critical-role-of-solenoid-modulator-afl-valves
  3. Sonnax — GM 4L80-E, 4L85-E Vacuum Test Guide. Backs vacuum testing as the reliable method to confirm bore wear in a suspect valve body before replacement. www.sonnax.com/tech_resources/434-gm-4l80-e-4l85-e-vacuum-test-guide

4L80E Valve Body 2003

$202.99
In stock • ships from the USA • FREE shipping • 30-day returns

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