6T30 Banner Rebuild Kit 2009-13, new and ready to install. Fits the 6T30. Ships fast from the USA.
The 6T30 is the light-duty member of GM's six-speed front-drive family, built for the small four-cylinder cars: the Chevrolet Cruze with the 1.8L and the Sonic with the 1.6L or 1.8L, plus a long list of export models. When one of these starts slipping on the 2-3 or 3-4, flares on takeoff once it is warm, or drips from the pan and axle seals, the usual fix is a soft-parts overhaul. This banner rebuild kit is listed for 2009-2013 6T30 units and carries the transmission overhaul gasket and seal kit plus a standard set of friction clutch plates. It is listed without pistons, which keeps the cost down when your pistons and steels are still serviceable.
The 6T30 shares its basic layout with the 6T40: clutch packs applied by hydraulic pistons and a TEHCM that combines the valve body, solenoids and transmission computer inside the case. Each clutch pack is applied by oil that has to pass a run of seals and sealing rings, and the computer judges every shift by how fast the input speed changes. Glazed frictions and hardened seals both slow that change, so the TCM raises pressure and lengthens the shift until it sets a ratio or performance code. Replacing the friction plates restores grip, and the new seals and gaskets let each piston see full apply pressure again. The 6T30 is built for lower torque than the 6T40, and its overhaul kits carry their own part numbers, so do not assume the plates in a 6T40 kit will drop into a 6T30.
Start with the level, checked hot at the plug, since a low 6T30 can slip just like a worn one. Then pull codes. An electrical or single solenoid code with clean fluid is a TEHCM problem, not a rebuild, and our shift solenoid guide for this family walks through it. If the fluid is burnt and the pan holds friction debris, the packs are worn and a banner kit is the right repair. A leak alone may only need seals; the common leak spots guide shows where to look first, including the converter seal GM revised in 2013.
The listing covers 2009-2013 6T30 transmissions, including the Cruze 1.8L and Sonic 1.6L and 1.8L. That range spans GM's Gen 2 update, which started in 2012 and changed the valve body, removed the pressure switches and dropped one sealing ring, so a 2012-2013 unit and a 2009-2011 unit are not identical inside. Read the ID tag on the case, compare the gaskets and sealing rings against your old parts before you assemble, and confirm your friction count. If you are not sure which unit you have, send us your year and VIN and we will check it. All of our 6T30 and 6T40 overhaul kits are grouped on the rebuild kits page, and the other 2009-2013 6T30 banner kit is listed separately.
Steels and pistons are not listed in this kit. If the steels are blued or warped, or a piston lip is cut, order those parts before you tear down so the job is not held up. Soak the new frictions in Dexron VI, set each clutch clearance to spec, and inspect the drums and the low one-way clutch while the unit is apart; the 6T30 sprag clutch is the part to replace if it slips or locks in both directions. Check the pump bushing and gears for scoring, and replace the 6T30 pump if they are worn. Refill with Dexron VI only, set the level hot, and run the adaptive learn with a scan tool before you judge the shifts. The rebuild cost guide covers which hard parts most often get added once one of these units is open.
| Fits | 6T30 2009-13 |
| Part type | Banner Rebuild 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.
It is listed for 2009-2013 6T30 transmissions, including the Chevrolet Cruze 1.8L and the Sonic 1.6L and 1.8L. Larger-engine cars in this family usually have the 6T40 or 6T45, so check the ID tag or send us your year and VIN.
It is listed without pistons, and the contents name the overhaul gasket and seal kit and a set of friction plates. Plan on sourcing steels or pistons separately if yours are heat-damaged.
Do not assume it. The 6T30 is the lighter-duty member of the family and its rebuild kits carry different part numbers, so use a kit made for the 6T30.
Check the fluid level hot first and scan for codes. P0776 with burnt fluid and debris in the pan points to worn clutches and a rebuild; clean fluid with a solenoid code points to the TEHCM instead.
Dexron VI only. Set the level with the fluid hot at the check plug, then run the adaptive learn with a scan tool and road test before you judge the shift quality.
