Hand-pumped 8 liter vacuum extractor that pulls ATF out through the dipstick tube, so you can do a drain-and-fill without dropping the pan.
Plenty of late-model automatics have no drain plug in the pan, and some trucks and SUVs make the pan a messy, hour-long job just to swap a few quarts of fluid. The OEMTOOLS 24936 is a hand-pumped vacuum extractor with an 8 liter (about 2.1 gallon) tank that pulls ATF up through the dipstick tube instead, so a fluid service turns into a measured, clean exchange you can do in a driveway. It needs no compressor and no battery leads: you work the handle, and the vacuum in the tank does the pulling.
A pan drain or a dipstick extraction only removes the fluid sitting in the pan. The oil in the torque converter, the cooler and the valve body stays put, which is why a single service usually replaces only a portion of the total fill. The point of an extractor is to make that partial exchange easy to repeat. Feed the long dipstick hose down the fill tube until it touches the bottom of the pan, pump the handle to build vacuum, and let the fluid flow into the tank. The clear tank lets you see how much came out, so you can put the same amount of new fluid back. Repeat the exchange a few hundred miles later and the percentage of fresh fluid climbs each time. Our drain-and-fill walkthrough explains why many shops prefer this gentle approach on a high-mileage unit over a machine flush.
The 8 liter size suits GM's newer rear-drive units. GM TechLink lists the fluid change capacity of the 8L80 at 7.0 liters and the 10L80 at 7.7 liters, so one tank covers a complete pan-level service on either without stopping to empty it.
An extractor only works if the hose can reach the pan. Most units with a dipstick tube will take the 41 inch dipstick hose, but some sealed transmissions have no dipstick at all and are serviced from a fill plug in the case; those need a pressurized fill pump with an adapter rather than a vacuum unit. Check your fluid condition first with our ATF color and smell chart. Fluid that is merely dark calls for a service; fluid full of metal or with a strong burnt smell means a fluid change will not fix the problem and the transmission needs a diagnosis first. For fluid type and procedure, see our guide to changing automatic transmission fluid along with your owner manual.
This is a universal tool, not a vehicle-specific part. The AutoZone Pro tool catalog lists the 24936 with a 2.1 gallon (8.4 quart) reservoir, an overflow shutoff valve and the updated 41 inch extended dipstick hose, rated for engine oil, transmission fluid, gear oil, coolant and power steering fluid. It also comes with a 5 foot suction hose for reservoirs and fill holes the tank cannot sit beside, such as a differential or a power steering reservoir. It is built for thin fluids, so warm the transmission before you pull; cold ATF moves slowly through a small hose. It is not for gasoline or anything flammable, as the warning label on the tank states.
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No single pan-level service replaces all of the fluid, whether you pull it through the dipstick or drop the pan, because the converter and cooler keep their share. Two or three exchanges spaced a few hundred miles apart bring the fresh percentage up gradually.
This listing is the hand-pump version. You build vacuum with the handle, so it works anywhere without an air line or 12V power.
Only if you can get the hose into the pan through a fill or check opening. Many sealed units are serviced through a plug in the case and are easier to fill with a pressurized fill pump and the matching adapter.
8 liters, about 2.1 gallons or 8.4 quarts. That covers a pan-level service on most passenger car and light truck automatics in one pull.
Warm. ATF at operating temperature flows through the small dipstick hose far faster than cold fluid. Let it cool enough to handle safely, and never use the extractor on gasoline or other flammable liquids.
