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Q: transmission cooler lines on 1994 Buick Skylark

how do you replace transmission cooler lines? Is there pressure on these lines when the car is off?
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There is no pressure in the transmission oil cooler lines on your 1994 Buick Skylark. The lines may have quick disconnect fittings which will require a special tool to remove them or they may use standard flair nut fittings. You will need to look over the cooler lines and see if you have the tools necessary to make the needed repairs. It is sometime also possible to replace only the rubber hoses if that is what is leaking, There can be some special skills required and a special type of hose necessary to replace only the rubber hoses.
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