6L80 Governor Pressure Solenoid, remanufactured and ready to install. Fits the 6L80. Ships fast from the USA.
People shopping for a 6L80 governor pressure solenoid are usually chasing a shift problem: a Silverado, Tahoe, Sierra, Yukon or Escalade that bangs into second, flares on the 3-4 or 4-5, drops into a fixed gear, or keeps setting solenoid and pressure codes. The 6L80 does not actually have a governor. That part belongs to older hydraulic and early electronic transmissions. On the 6L80, the job of deciding line pressure and when each clutch applies is done by the TEHCM, and that is what this listing is: a remanufactured TEHCM solenoid valve body assembly, the electronic solenoid body that bolts to the valve body inside the pan.
TEHCM stands for Transmission Electro-Hydraulic Control Module. It combines the transmission control computer, the shift and pressure control solenoids, and the pressure switches in one unit mounted on the valve body. Fluid from the pump is regulated by the valve body, and the solenoids on this assembly meter that oil to the five clutches, 1-2-3-4, 3-5-R, 4-5-6, 2-6 and low/reverse, so that one clutch releases while the next applies. Clutch-to-clutch shifting leaves no one-way clutch to cover for a weak solenoid, so a sticking solenoid or a cracked pressure switch shows up right away as a harsh, slipping or tied-up shift.
Do the cheap checks first. Make sure the fluid level is correct with the transmission at temperature, scan for every stored code, and watch the commanded versus actual gear and pressure control solenoid current on a scan tool. A mainline pressure test against the commanded value tells you whether the problem is electrical or a worn bore in the valve body. Worn actuator feed limit bores and pump problems can mimic a bad solenoid, so rule those out. Our 6L80 common problems guide walks through the seven failures that actually show up, and the Escalade shift problems guide covers the code-by-code diagnosis on the big SUVs.
The source description for this remanufactured unit lists 6L80 from 2008 to 2010, 6L90 from 2007 to 2013, and 6L45 in 2010, with the title calling out 2008 to 2013 GM applications. The 6L80, 6L90 and 6L45 share a family layout, but upper valve bodies and the parts mounted to them are unique by transmission RPO (MYA, MYB, MYC, MYD), and GM has documented no reverse and no second gear after the wrong upper valve body was installed. Compare the casting and connector on your removed unit to the photos, check your RPO code on the glovebox or door label, and send us your year and VIN if you want us to confirm before ordering. Browse every part for this unit on the 6L80 parts page.
| Fits | 6L80 |
| Part type | Governor Pressure Solenoid |
| Condition | Remanufactured |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The 6L80 is a fully electronic clutch-to-clutch transmission with no governor. Line pressure and shift timing are controlled by solenoids in the TEHCM, which is what this remanufactured assembly is.
The source description lists the 6L80 for 2008-2010, the 6L90 for 2007-2013 and the 6L45 for 2010. For a 6L80 outside 2008-2010, send us your year and VIN and the part number from your removed unit so we can confirm before you order.
Plan on it. The control module has to carry the correct calibration for your vehicle, which is done with a capable scan tool or by a dealer or shop, followed by a transmission fast learn so clutch fill times are relearned.
Dexron VI automatic transmission fluid. Check the level at operating temperature through the check plug procedure for your vehicle after installing the assembly.
A new pan gasket and filter at minimum. If diagnosis showed worn valve body bores or low mainline pressure, repair the valve body or pump too, since a new solenoid body cannot fix pressure lost elsewhere.
