Chevy Transmission Cooler Lines Diagram Wiring Site Resource The 4l60e transmission cooler line flow is very easy to follow. as the gif above shows, the bottom line is the hot line which sends warm transmission fluid out to the factory trans cooler within the radiator at the lower port in most cases. fyi, some vehicles have the factory cooler on the bottom of the radiator, but simply follow the lower. The top line is the "return line" which runs transmission fluid back to the transmission from the factory in tank radiator cooler. the return line begins at the top of the radiator on the passenger side, and runs back to the transmission. here is a simple diagram of the factory setup: transmission >feed line >radiator(stock cooler) >return line.
Transmission Cooler Lines Diagram Diagramwirings Out of the auxiliary cooler left side back to the transmission upper line. same style of connections on the transmission. slide the round black locking cover back to access the small wire retaining clip. remove the retaining clip and pull the line free from the fitting that is threaded into the transmission. The transmission cooler lines are made of metal and connect to the radiator at the transmission cooler inlet and outlet. the inlet is on the driver’s side of the radiator and the outlet is on the passenger’s side. there are two bolts that hold each line in place. the bottom bolt is larger than the top bolt. Find transmission cooler lines for all makes and models with a 4l60e transmission. wiring & diagrams. resources. 4l60e transmissions, guides & info. Pre installation. identify the two 1 2” npt x 3 8” barb fittings. using teflon tape or suitable sealant, install the two 1 2” npt x 3 8” barb fittings onto the transmission cooler. identify the 11 32” x 4’ hose and hose clamps. slide one hose clamp on each end of the supplied hose. using a dab of oil, lubricate each end of the hose.
Transmission Cooler Installation Diagram Find transmission cooler lines for all makes and models with a 4l60e transmission. wiring & diagrams. resources. 4l60e transmissions, guides & info. Pre installation. identify the two 1 2” npt x 3 8” barb fittings. using teflon tape or suitable sealant, install the two 1 2” npt x 3 8” barb fittings onto the transmission cooler. identify the 11 32” x 4’ hose and hose clamps. slide one hose clamp on each end of the supplied hose. using a dab of oil, lubricate each end of the hose. Because of the cold temperature i had a shop take care of this work. the cooler lines out of the transmission run to a thermostatic valve that's located near the bottom of the radiator. the shop pulled the battery, battery tray, and the transmission support in order to replace the line that connects to the drivers side of the transmission. I need to replace the cooler lines in my 68 c10 sb. i'd like to use something easy to bend and corrosion resistant. most of the steel and cupro nickel line i've looked at is .028" wall thickness. i've replaced the cooler lines in my 06 silverado with factory replacement lines and they seem a lot lighter.
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