If you own a 1998-2013 Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, Express or Savana and you have ever done a fluid service on it, you know the routine: loosen the pan bolts, let one corner sag, and take a bath in hot ATF because GM never put a drain plug on the factory pan. This kit replaces that pan with a new steel 265-811 casting that has a threaded drain plug, and it includes the filter and the pan gasket, so one box covers a complete 4L60E, 4L65E or 4L70E pan and filter service.
What the pan and filter do in a 4L60E
The 4L60E pump pulls all of its oil through the filter, which hangs from the valve body and sits low in the pan with its neck sealed into the pump suction bore. The pan is the reservoir that keeps that pickup submerged, and its floor is where wear material settles onto the magnet. When the filter loads up with clutch material, the pump works against a restriction, line pressure sags, and the 3-4 clutch pack, already the weak spot in this transmission, starts to slip and burn. Clean oil also matters to the valve body: Transmission Digest notes that valve-to-bore clearances in a modern valve body are measured in ten-thousandths of an inch, so fine debris that gets past a tired filter scores bores and causes the TCC and pressure problems these units are known for.
Symptoms that call for a pan and filter service
- Whine from the pump that rises with engine speed, worst when the fluid is cold
- Slow engagement into Drive or Reverse after the truck has sat
- Slipping or a flare on the 3-4 shift when the truck is loaded or hot
- Dark, burnt-smelling fluid on the dipstick
- A leaking pan rail or a pan that has been dented or bent
- A transmission that is simply past the GM interval with no record of a filter change
How to confirm before buying
Check the fluid hot and level first; a low reading is a leak to find, not a filter problem. If the fluid is dark or the truck has towed, plan the service. When the old pan comes off, read the debris: fine gray paste on the magnet is normal, while bronze flakes, steel slivers or loose friction material mean internal wear that a new filter will not fix. Our 4L60E filter and pan service guide covers GM's intervals and what the debris tells you, and the high-mileage service checklist lists what else to inspect while the pan is down.
Fitment
This kit is listed for 1998-2013 GM rear-drive trucks, SUVs and vans with the 4L60E, 4L65E or 4L70E, and the pan crosses to OE 24229658, 24240207, 24215535 and 24209295. Note that 1998 is when GM introduced the deeper pan on C/K trucks and G vans, with a longer dipstick, tube and stop bracket to match, and this is that deeper style rather than the shallow pan used on cars and many earlier trucks. Lay your old pan next to the listing photos or measure its depth before ordering; if your truck has the shallow pan, stay with a shallow pan, because a dipstick that does not match the pan reads the level wrong. When in doubt, send us your year and VIN. All 4L60E parts are on the 4L60E parts page, and if you would rather have a cast pan in the same 265-811 pattern, see the aluminum pan kit with magnetic plug.
Install notes
- Drop the old pan, pull the old filter straight down, and make sure the filter neck seal came out with it; a leftover seal stacked under the new one causes a pump suction leak.
- Clean the case rail of old gasket and oil. Do not add silicone to a dry gasket.
- Install the new filter fully seated, set the pan and gasket, and snug the bolts in a crisscross pattern. GM lists 18 ft-lb for the pan-to-case bolts and 25 ft-lb for the drain plug on the 4L65E and 4L70E.
- Refill with Dexron VI, start the engine, cycle through the gears and set the level at operating temperature.
- If the truck also has shift or solenoid complaints, do it in one pan drop with the 4L60E solenoid and filter service kit.
From then on, a fluid change is a pull of the plug instead of a pan drop, which is the whole point: a 4L60E that gets fresh fluid on schedule lasts longer.
