How to Replace Transmission Cooler Lines
for all vehicles ( View guide for your vehicle 
)
)
Moderate
1.4 to 2.1 hours to fix for the average DIY'er
Parts needed:
Suggest Parts
Transmission Oil Line
Tools needed:
Suggest Tools
Supplies needed:
Brake Cleaner
Estimated Costs:
DIY Costs
Est. $71.36 parts only Shop Costs
Est. $186.97 in parts and labor
Est. $71.36 parts only Shop Costs
Est. $186.97 in parts and labor
Costs are based on averages for all vehicles.
Guide Steps
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Secure the vehicle on a level surface, making sure the vehicle will not roll or lean too much when jacked up. edit step -
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Secure the vehicle with jack stands on both sides for safety before starting any work. Do not rely on the jack to hold the vehicle up while working. edit step -
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Locate the transmission cooler hard lines that run into the radiator and inspect them for leaks. edit step -
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Disconnect the transmission cooler lines at the radiator and drain the fluid into a drain pan. edit step -
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Disconnect the transmission cooler lines at the transmission and again drain the fluid into a drain pan. edit step -
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Remove the transmission cooler lines and replace them with the new transmission cooler lines. edit step -
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Attach the new cooler lines to the radiator and the transmission as well as any hangers that they may have been suspended from. edit step -
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Fill the transmission with the manufacturer’s recommended fluid to the proper level indicated in Owner’s Manual. edit step -
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Start the vehicle and check the transmission dipstick to make sure the fluid is at the proper level. Top off if needed then road test the vehicle to make sure there are no leaks around the transmission cooler lines. edit step -
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