6T30 Solenoid Kit 2009-2011, remanufactured and ready to install. Fits the 6T30. Ships fast from the USA.
The 6T30 is the light-duty member of GM's 6T family, built for small-engine front drivers like the Chevrolet Cruze 1.4L and 1.8L. When one of these starts flaring on upshifts, drops a gear, or throws a P07xx solenoid performance code, the fix is often inside the control solenoid valve assembly. This remanufactured kit replaces all seven solenoids in that assembly for the 2009-2011 applications it is listed for, so the whole set comes out at the same age and condition.
The 6T30 shares its control layout with the 6T40 and 6T45, and GM covers all of them in the same diagnostic bulletins. The transmission computer and its solenoids are one module, the TEHCM, bolted to the valve body inside the case. Six of the seven solenoids are variable bleed pressure control units that regulate line pressure, the four clutch circuits and torque converter clutch apply. The seventh is SS1, an on/off solenoid that steers oil through the clutch select valve in Park, Reverse, Neutral and 1st braking. Because the clutches swap clutch to clutch with no bands, pressure control is everything; a solenoid that sticks or reads high resistance shows up as a flare or a lost gear right away.
A 1-2 neutral drop is not always a solenoid. Transmission Digest traced a flare to neutral on a 2011 Cruze 1.8L Gen 1 unit to a damaged valve body filter plate and the pressure switch 2 circuit, which a solenoid kit will not repair, so inspect the filter plate whenever the TEHCM comes off. GM's PI0670A also covers Cruze and Sonic and warns not to replace the TEHCM on a Gen 1 unit until the 3-5-R clutch piston has been inspected, since a cut piston lip sets the same P0776 as a bad PCS2. Use our shift solenoid symptoms and testing guide for the 3-5 ohm and 16-20 ohm resistance checks, and read delayed engagement causes if the complaint is a slow pull into gear.
This kit is listed for 2009-2011 6T30 and 6T40 applications, with the Cruze 1.4L and 1.8L as the main North American vehicles in that window. It is made to the Gen 2 solenoid pattern. That matters on a Cruze more than most: GM's PI0604C kept the 2012 Cruze and Sonic 1.8L on Gen 1 controls even after other models changed, so a 2011 Cruze with its original TEHCM is likely Gen 1. Read the eighth digit of the TCM identifier on the module before you order; B, C or D confirms Gen 2, while 1, 2 or 3 is Gen 1. Your RPO code on the service parts label tells you which 6T unit you have. Send us the ID, or your year and VIN, and we will confirm the match. For a 2012 Cruze or Sonic, look at the 6T30 solenoid kit for 2010-2012 instead.
Drop the side cover, unplug the TEHCM and lift it off the valve body. Lube new O-rings with Dexron VI, seat each solenoid in its original position, and torque the retaining hardware lightly and evenly. Fill with Dexron VI and set the level at the plug with the fluid hot. Clear adapts afterward and let the unit relearn over several drive cycles. If the valve body has worn bores or a broken filter plate, pair the kit with the Gen 1 valve body repair shift kit, or move to a remanufactured 6T40 valve body.
| Fits | 6T30 2009-2011 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| 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 2009-2011 Cruze 1.4L and 1.8L applications. The set follows the Gen 2 solenoid pattern, and many 2011-2012 Cruze units are Gen 1, so read the eighth digit of the TCM ID on your TEHCM or send us your VIN before ordering.
They are close relatives that share the TEHCM-based control design and the same GM diagnostic bulletins. The 6T30 is the lighter-duty version used behind small engines. Use your RPO code to confirm which one your vehicle has.
Not always. A documented cause on 2011 Cruze 1.8L Gen 1 units is a damaged valve body filter plate and the pressure switch 2 circuit. Inspect the filter plate when the TEHCM is off.
Pressure control solenoids should read about 3-5 ohms and the SS1 on/off solenoid about 16-20 ohms at room temperature. A solenoid in spec can still stick, so flow testing is the next step.
Dexron VI. Fill and check the level hot at the level set plug.
