6T30 Sprag Clutch 2013, used and ready to install. Fits the 6T30. Ships fast from the USA.
This is a used GM low and reverse one-way clutch (mechanical diode) out of a 6T30, part number 24274196. It came from a 2013-up Chevrolet Cruze or Sonic with the 1.8L engine. The 6T30 is the light-duty member of GM's small front-drive six-speed family. It went behind the small engines, and in a 1.8L car it sees a lot of short-trip, stop-and-go miles. If yours slips or feels like it is in neutral when you pull away in Drive, but drives normally once it shifts to second, this hub is a likely cause. It is a good used OE part, not aftermarket, and it carries a 1-year warranty.
The 6T30 shares its clutch layout and apply chart with the Gen 2 6T40 and 6T45. Sonnax covers all of them with one valve body booklet and one chart. First gear in Drive comes from just two parts: the 1-2-3-4 clutch and this one-way clutch. The diode has spring-loaded struts in a pocket plate. They lock against the notched race in one direction and click past it in the other. That lets the TCM shift 1-2 by applying the 2-6 clutch with nothing to release. The diode just overruns.
In manual low the Low and Reverse clutch applies to give engine braking, and the diode carries no real load. In Reverse the Low and Reverse clutch works with the 3-5-R clutch. The diode only works in Drive first, so a worn one only affects first gear.
Check the fluid level hot first. A low 6T30 can cause pump cavitation and a slip that feels a lot like a bad diode. Then road test in Drive and in manual low. If the car pulls in L1 but not in Drive first, the 1-2-3-4 clutch is applying and the diode is not holding. If first, second, third and fourth all slip, look at the 1-2-3-4 clutch and its piston, not the diode. Our delayed engagement guide shows which clutch each engagement depends on, and it applies to the 6T30 too. The 6T40 family common problems guide covers the clutch failures that look similar.
This used hub is listed for the 6T30 in 2013-up Chevrolet Cruze and Sonic with the 1.8L. GM's PI0604C says every 2013 vehicle it covers uses the Gen 2 design. The 2012 Cruze and Sonic 1.8L stayed on Gen 1, so a 2012 1.8L car may not take this exact part. Match 24274196 to the part on your old hub, or send us your year and VIN and we will confirm it before you order. For a new unit, see the new ACDelco 6T40 one-way clutch, but check its part number against yours, since it is a 6T40 part.
| Fits | 6T30 2013 |
| Part type | Sprag Clutch |
| Condition | Used |
| 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.
Maybe not. GM kept the 2012 Cruze and Sonic 1.8L on the Gen 1 design and moved 2013 to Gen 2. This part came from a 2013-up 1.8L unit, so match 24274196 to the old part or send us your VIN first.
They do the same job in the same apply chart, but the part numbers differ by unit and generation. This one is GM 24274196. The new 6T40 part we stock is 24274198. Match the number to the part you remove.
That is the classic sign. In manual low the Low and Reverse clutch holds first gear. In Drive only the one-way clutch holds it. If L works and D does not, the diode is the prime suspect once fluid level is correct.
Inspect and usually replace the Low and Reverse clutch pack, plus every seal you disturb. An overhaul or master rebuild kit covers those while the case is apart.
Yes. Use DEXRON-VI, set the level hot, then clear shift adapts and run the fast learn so the TCM relearns clutch fill for the shifts.
