10L80 Pressure Control Solenoid 2019

Read this first: although this listing carries a pressure control solenoid name, the part in the photo and the part that ships is a PPE heavy-duty cast aluminum deep transmission pan for the 10L80 ten-speed, not a solenoid. It is aimed at Chevrolet Silverado 1500 and GMC Sierra 1500 owners running the 3.0L Duramax who tow, see fluid temperatures climb on long grades, want a real drain plug for easier fluid changes, or have a factory pan that is dented or seeping. If you came here for a line pressure solenoid, jump to the install section below where we point you to the right part.

What a deep pan does on a 10L80

On the 10L80 the pan is the sump the filter pulls from, and everything the pump sends to the valve body, clutches and cooler starts there. The factory pan is stamped and has no drain plug, so a routine fluid change means dropping the pan and wearing the fluid. This PPE pan changes three things. It holds about 4 more quarts, so the same heat load is spread over more fluid and temperature rises more slowly while towing. Its 3/4-inch external fins and 3/4-inch internal baffles add surface area for shedding heat and keep fluid from sloshing away from the filter pickup in hard stops and turns. And it adds a 304 stainless drain plug with a high-temperature neodymium magnet and Viton O-ring, plus a 1/8-inch NPT port with a plug already installed, which is where many owners add a sump temperature sender. The casting is A356.0-T6 heat-treated aluminum with gussets at the flange to stiffen the case joint.

Symptoms this upgrade helps with

• Transmission temperature readings that keep rising while towing or climbing long grades
• Shift quality that gets firm or erratic after a long hot run and settles down once the truck cools
• Fluid that turns dark or smells burnt well before its service interval
• A factory pan that is dented, scraped or weeping at the flange
• Wanting a drain-and-fill option for shorter service intervals on a hard-working truck

How to confirm the real problem before buying

A deep pan manages heat and makes service easier. It will not cure a hydraulic fault. If your truck has harsh or slipping shifts, a sudden downshift, or pressure codes such as P0748 or P0960, check the line pressure circuit and valve body first; our 10L80 pressure control solenoid symptoms guide and 10L80 valve body symptoms and testing walk through that diagnosis. If heat is the complaint, inspect the cooler lines and cooler for kinks, damage or restriction before blaming the pan; the 10L80 cooler line replacement guide covers that job.

Fitment

The listing is titled for 2019, but PPE dealers list this pan for 2020-2026 Silverado 1500 and Sierra 1500 trucks with the 3.0L Duramax diesel and the 10L80. Treat 2019 as unconfirmed and check with us before ordering for a 2019 truck. It is a diesel-application pan: do not assume it fits the gas 5.3L or 6.2L trucks, the full-size SUVs, the Camaro, or the 10L90. Confirm your engine on the RPO label or send us your year and VIN and we will check it. Everything else we carry for this transmission is on the 10L80 and 10L90 parts page.

Install notes

• PPE rates the job at about one hour with no drilling. The box contains the pan and the magnetic drain plug only.
• Drain as much as possible, drop the factory pan, and clean every trace of old gasket and fluid from the case rail.
• The pan is designed around the factory gasket and filter, so install a new filter and gasket while the pan is off.
• Tighten the pan bolts in a cross pattern to the factory torque in your service information; the gasket seals with even clamp, not extra torque.
• Refill with DEXRON ULV only. GM lists the 10L80 fluid change at 8.1 quarts, and the deeper pan adds about 4 quarts on top of what drained, so have plenty on hand and set the level hot, engine running, per the service procedure.
• If your actual problem is line pressure, the separate 10L80 line pressure control solenoid is the part to look at, and a worn hydraulic unit calls for a remanufactured 10L80 valve body.

Is this actually a pressure control solenoid?

No. The listing name is wrong. What ships is a PPE heavy-duty cast aluminum deep transmission pan for the 10L80, with a magnetic drain plug.

Will it fit my 2019 Silverado or Sierra?

PPE dealers list it for 2020-2026 Silverado 1500 and Sierra 1500 with the 3.0L Duramax and 10L80. For a 2019, or any gas engine, send us your year and VIN before ordering.

How much more fluid does it hold than stock?

About 4 quarts more than the factory pan, according to PPE's product information.

Do I need a new filter and gasket?

Yes. The pan uses the factory gasket and filter and neither is included, so replace both while the pan is off.

What fluid and how much?

DEXRON ULV only. GM lists an 8.1 quart fluid change for the 10L80; add roughly 4 quarts for the deeper pan and set the final level hot.

What is the extra threaded port for?

It is a 1/8-inch NPT port that ships plugged. Many owners use it to add a sump temperature sender; leave the plug in if you do not need it.

• 10L80 Cooler Line Replacement Guide
• 10L80 Pressure Control (EPC) Solenoid Symptoms
• 10L80 Valve Body Symptoms and Testing
• GM 10L80 Transmission Problems: The Valve Body Wear Behind the Wheel-Lock-Up Recall