Complete 6T40 and 6T45 pan service in one box: stamped pan, filter, gasket and 13 bolts for Cruze, Malibu, Equinox and Encore.
If your Cruze, Malibu, Sonic, Trax, Equinox, Encore, Verano or Terrain has a 6T40 or 6T45 six-speed that is weeping fluid at the bottom of the case, or you have the unit apart and the old pan is dented or bent, this kit replaces every piece of that sealing joint at once. In the box: a new stamped oil pan, a new automatic transmission filter, a new pan gasket and all 13 mounting bolts. It is listed as replacing GM 24253434 and the earlier numbers 24243884, 24243517, 24274649 and SK242534.
The 6T40/6T45 is a transverse front-drive transaxle with no dipstick. Fluid sits in the bottom of the case, the filter feeds the pump, and the level is controlled by a check plug plus a thermal fluid level control valve that holds extra fluid in the valve body cover once the unit is warm. That design makes the bottom sealing joint more important than on an older box: a slow leak drops the working level without any dipstick to warn you, and once the pump starts pulling air at the pickup the clutch-to-clutch shifts are the first thing to suffer. A loaded or cracked filter does the same thing from the other direction, starving the pump of volume.
Do not assume every wet case is a pan leak. Our 6T40 fluid leak guide covers the converter housing seal and left axle seal leaks that run down the case and drip in the same spot. Clean the area, drive, and trace the trail to its highest wet point. If it truly starts at the pan flange, check the flange with a straightedge: a bent flange is the reason many 6T40 pans keep leaking after a gasket-only job, and it is exactly when a whole new pan pays for itself. If the fluid is dark and the magnet is carrying steel, read the 6T40 common problems guide before buying parts, because the pan is not your real problem.
The listing covers 6T40/6T45 applications including Chevrolet Cruze 2011-2018, Malibu 2008-2018, Sonic 2012-2018, Trax 2013-2018, Equinox 2016-2018, Impala 2014-2018, Orlando 2012-2013 and Captiva Sport 2012-2015; Buick Encore 2013-2018, LaCrosse 2010-2016 and 2018, Regal 2011-2017, Verano 2012-2017, Cascada 2016-2018 and Envision 2016-2018; GMC Terrain 2016-2018 and Acadia 2017-2018; Pontiac G6 2009-2010 and Saturn Aura 2009. GM made running changes inside this family across Gen 1, Gen 2 and Gen 3, so hold your old pan next to the photos and match the part number before you order, or send us your year and VIN. If the clutches are worn too, the 6T40 clutch module is the next part most rebuilders reach for.
If you only need the filter and gasket and your pan is straight, the lighter 6T40/6T45 filter and gasket kit is the lower-cost option for 2010-2011 units.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
If the flange is flat, undamaged and clean, a gasket and filter are enough. Buy the full pan when the flange has been bent by a pry bar, the pan is dented from debris, or the drain area is rusting. A bent flange will leak through any new gasket.
DEXRON VI only. GM TechLink lists 4.0-6.0 liters (4.2-6.3 quarts) for a fluid change on the 6T40. Add roughly what came out, then set the final level hot at the check plug.
Per ATRA bulletin 1725, cycle the shifter through each range, idle at least three minutes in Park, and with fluid at 85-95 C (185-203 F) on a scan tool, remove the level set plug and let excess run until it drips. Overfilling by as little as half a quart can push fluid out the vent.
The listing covers the 2011-2018 Cruze with the 6T40. Compare your old pan and its part number against the photos and the numbers on this page, or send us your year and VIN and we will confirm before it ships.
No. Converter housing seal and left axle seal leaks run down the case and drip where a pan leak would. Clean the area and trace the leak to its highest wet point before ordering.
