6L80 Tcc Solenoid, new and ready to install. Fits the 6L80. Ships fast from the USA.
Read this before you order: this listing is not an electrical solenoid. On the 6L80 the torque converter clutch solenoid lives inside the TEHCM (the combined control module and solenoid body) and is not serviced as a loose part. What ships here is the TransGo 6L8 CS-TCC Clutch Select Valve and TCC Regulator Valve Kit, a hardened steel valve kit for the lower valve body of the 6L45, 6L50, 6L80 and 6L90. It is aimed at two complaints owners of Silverado, Sierra, Tahoe, Yukon, Suburban and Escalade trucks search for constantly: a low-speed converter chuggle or surge, often while the V8 is in cylinder deactivation, and a P0751 shift solenoid performance code that keeps coming back even after the solenoid side checks good.
The TCC solenoid in the TEHCM only sends a signal pressure. The TCC regulator valve in the lower valve body turns that signal into the actual apply pressure behind the converter clutch, and the computer constantly trims it to hold a small, controlled slip at light load. When the regulator bore wears, that slip control gets sloppy, and the computer hunts. You feel it as a chuggle around 25-45 mph, worst when the engine drops to four cylinders. The two clutch select valves sit in the same casting and steer solenoid output to the correct clutch. If one drags in its bore, the pressure switch reading no longer matches the command, and the TCM blames a shift solenoid. TransGo replaces both clutch select valves and the TCC regulator with new hardened steel valves; its product page says the redesigned regulator uses longer lands that ride on bore areas that were not worn by the original.
Scan for codes and watch commanded versus actual TCC slip with a scan tool at steady 35-45 mph cruise. A slip number that swings while the command stays steady points at regulation, not the converter itself. Rule out old fluid first: GM bulletins tie a lot of 6L80 shudder to fluid condition. If you have solenoid performance codes, our 6L80 shift solenoid symptoms guide walks through separating a bad TEHCM from a sticking valve, and the 6L80 common problems guide covers the converter shudder and valve body patterns this kit belongs to.
TransGo lists this kit for 2006-on 6L45, 6L50, 6L80 and 6L90 units, which covers the 6L80 in the Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, Escalade, Camaro and Corvette. The kit includes two extra clutch select springs: TransGo tells you to use them only if your separator plate gasket has a specific slot, and to reuse the original springs if it does not. Early and late valve bodies differ, so do not mix parts between them. If you are unsure, send us your year and VIN and we will confirm before it ships. Browse the rest of our 6L80 parts for the matching hard parts.
TransGo rates this job as one that does not require pulling the transmission; the pan, filter, TEHCM and valve body come out from underneath. Drop the lower valve body, discard the original clutch select valves but keep their springs, then hold the casting vertical and let each new valve drop into its bore. It should bounce off the bottom, which tells you it is free. Remove and discard the original TCC regulator and spring, install the new white spring and new valve, and reuse the original shuttle valve, end plug and retainer. Make sure every retainer sits below the casting surface. TransGo's sheet calls for valve body bolts at 71 in-lb. While the body is apart, check the other bores; the 6L80 valve body rebuild zip kit covers the rest of the casting, and a Sonnax TCC regulator valve kit is the alternative if your bore needs reaming. Fill with fresh Dexron VI, reset transmission adapts and run a fast learn with a capable scan tool before judging lockup quality.
| Fits | 6L80 |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | TransGo |
| Reference | P0751 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. On the 6L80 the TCC solenoid is part of the TEHCM and is not sold separately. This is the TransGo 6L8 CS-TCC valve kit: a new TCC regulator valve with calibration spring and two hardened steel clutch select valves for the lower valve body.
It targets low-speed chuggle and TCC cycling caused by a worn regulator bore, especially during cylinder deactivation. A shudder caused by worn-out fluid or a damaged converter clutch lining needs a fluid exchange or converter replacement instead, so confirm the cause first.
TransGo designed it for shift solenoid performance codes and false P0751 caused by sticking or dragging clutch select valves. If the code comes from an electrical fault in the TEHCM, the valves will not cure it.
TransGo lists this kit as transmission removal not required. The pan, filter, TEHCM and valve body come out from under the vehicle.
Yes. TransGo lists it for 2006-on 6L45, 6L50, 6L80 and 6L90. Upper valve bodies differ between those models, but the lower body valves in this kit are common.
Refill with Dexron VI to the level set by the check plug procedure, then reset transmission adapts and run the fast learn with a scan tool so the TCM relearns clutch fill and TCC control.
