6L80 Overhaul Kit 2006, new and ready to install. Fits the 6L80. Ships fast from the USA.
The 6L80 debuted for 2006, and the earliest units have a few quirks a later-model kit does not account for. If you are rebuilding a first-year six-speed out of a 2006 Corvette or Cadillac STS-V, or an early unit swapped into another build, and it leaks, slips into reverse or flares on the 2-3, this is the gasket and seal overhaul kit for that 2006 transmission.
An overhaul kit is the soft-parts half of a rebuild: case and valve body gaskets, the pan gasket, clutch piston lip seals, the Teflon and rubber sealing rings that feed each clutch, and the O-rings for the pump, case connector and fittings. In a clutch-to-clutch six-speed those parts decide whether the clutch the TCM is applying gets full pressure on time. The product photo shows that seal and gasket set; no friction or steel plates are pictured, so plan on plates separately if your clutches are worn.
GM changed the 1-2-3-4 piston, the 1-2-3-4 piston housing and the 3-5-R piston for the 2008 model year, and warns that a 2008 housing in a 2007-or-older 6L80 can cause a 2-3 flare or 3-5-R clutch distress. Early units also use three inner seals in that housing that must all be installed, or the result is no reverse, no forward or burnt clutches. Rebuilding a 2006 means matching seals to early pistons, not grabbing whatever is on the shelf.
On 2006-2009 vehicles GM traces the harsh 2-3 to leaking 1-2-3-4 and 3-5-R sealing rings at the pump, which this kit replaces, and the reverse complaints to either those rings or a cracked housing.
Codes can come from the valve body or the TEHCM rather than seals, so start with fluid level and a scan. The 6L80 Corvette common problems guide covers the platform most 2006 units came in, and the 6L80 common problems guide lays out the pressure and solenoid checks. If the drum weld is cracked, a seal kit will not save it.
Listed for the 2006 GM 6L80. Because the internals changed during the early years, check your transmission against the kit before you start: send us the year and VIN and we will confirm. If your unit is 2007 or later, or you want the filter in the box, compare the 6L80/6L90 master overhaul kit with filter. Other parts for the unit are in the 6L80 collection.
| Fits | 6L80 2006 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The kit pictured is a gasket and seal set: gaskets, piston seals, sealing rings and O-rings. No plates are shown. If your clutches are worn, add plates or choose a master rebuild kit.
Be careful. GM changed the 1-2-3-4 piston, its housing and the 3-5-R piston for 2008, so seals need to match the pistons in your unit. Send us your year and VIN to confirm.
The first 6L80s went into 2006 performance cars such as the Corvette and Cadillac STS-V. Truck and SUV applications followed in 2007. Confirm by RPO MYC on the service parts label.
Only if the cause is leaking sealing rings or piston seals. A cracked 1-2-3-4 / 3-5-R housing must be replaced, and a sticking 3-5-R regulator valve needs valve body work.
DEXRON VI, with level set hot at the check plug. After the rebuild, reset transmission adapts with a scan tool and drive through the relearn.
