4L60E Transmission Cooler 2007-2013, new and ready to install. Fits the 4L60E. Ships fast from the USA.
On a 2007-2013 GM truck or SUV with the 4L60E, the most common reason people search for a transmission cooler part is a red drip under the cab, a wet frame rail, or a crusty steel line that finally rusted through. This listing is the pre-bent steel cooler line set pictured, the plumbing that carries hot fluid from the 4L60E forward to the cooler in the radiator and brings it back. Replacing a rotted set is far cheaper than the transmission it protects.
The 4L60E makes most of its heat in the torque converter, especially before the converter clutch applies and any time it slips. Converter charge oil leaves the transmission through one line, runs up to the cooler in the radiator, and returns through the other line to feed lubrication to the gear train and bushings. If a line leaks, the transmission loses fluid and lube flow at the same time. If a line is kinked or crushed, flow drops and temperature climbs. Either way the 3-4 clutch pack and the converter clutch pay for it. Our 4L60E overheating prevention guide explains why heat is the number one killer of this unit.
Clean the lines, the fittings and the case area, drive the truck to full temperature, then look again with a light. A seep at the quick-connect fitting at the case or radiator can sometimes be fixed with a new retainer or O-ring; rust through on the steel section means the line has to be replaced. If the transmission was run low long enough to slip, read our 4L60E P0741 guide before deciding whether new lines alone will be enough.
This set is listed for the 4L60E in 2007-2013 GM applications. In those years the 4L60E was used in the Chevrolet Silverado 1500, GMC Sierra 1500, Tahoe, Yukon, Suburban and related models, but line routing changes with cab and bed length, two- or four-wheel drive, and whether the truck has a 4L60E or one of the six-speed automatics that shared those years. Lay the new lines next to your old ones, or send us your year and VIN and we will confirm fitment before it ships. More parts for this transmission are on our 4L60E parts page.
Work with the engine cool and a drain pan under both ends. Release the quick-connect fittings at the transmission and radiator with the correct tool; an OTC 7937 cooler line disconnect tool keeps you from crushing the line ends. Route the new lines along the original clips so nothing rubs on the frame or exhaust. If the old fluid was dark or the transmission failed, flush the cooler and lines before reconnecting, because debris trapped in the cooler goes straight back into a fresh unit; our cooler flush guide covers the steps. Refill with DEXRON-VI, the fluid GM specifies for these trucks, and check the level hot with the engine running in Park. The 2010 Silverado owner manual lists 5.0 quarts for a 4L60-E pan and filter service, so top off in small amounts. If you are going into the pan anyway, a 2004-up 4L60E master rebuild kit is the next step for a unit that has been run low.
| Fits | 4L60E 2007-2013 |
| Part type | Transmission Cooler |
| Condition | New |
| 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.
They are listed for 2007-2013 4L60E applications, but routing varies with cab, bed length and drivetrain, and some trucks in those years have a six-speed automatic instead. Compare against your old lines or send us your year and VIN to confirm.
GM specifies DEXRON-VI automatic transmission fluid for 2007-2013 4L60E trucks. Top off slowly and check the level hot with the engine running in Park.
Only what drains out of the lines and the cooler, which is far less than a full service. The 2010 Silverado manual lists 5.0 quarts for a full 4L60-E pan and filter service, so you will not need that much for lines alone. Check the level hot after the job.
Yes if the fluid was dark or burnt, or if the transmission failed. Debris left in the cooler returns to the transmission through the lube circuit. If the fluid was clean, new lines alone are fine.
Yes. Running low on fluid causes converter clutch slip and overheating, and it often burns the 3-4 clutch pack. Fix a leak as soon as you find it and check the level.
