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Oil cooler line keeps blowing off

Rey11
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Rey11 New Member

Rey11

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2001 gmc sierra crew cab bagged front and back, with c notch. on hard acceleration the oil cooler line on the transmission side keeps blowing out causing my fluid to go every where. When driving normally it’s fine but hard acceleration no. The metal clip on the transmission but the line blows out each time. And everytime I pull over, wait 15 minutes connect the line back and new fluid, and trans good if I drive nice and slow.  

richard wysong Senior Enthusiast

richard wysong

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Posted

sounds like theres a restriction either in the lines or the cooler itself. just the cooler in the radiator or does it have auxillary cooler? either way you need to disconnect the lines at the trans and try blowing them out dis connecting 1 thing at a time until you find the restriction. it may be easier to cut the lines near the oilpan to do this then use compression unions to put it back together

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swathdiver Senior Enthusiast

swathdiver

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On 10/23/2021 at 6:02 PM, Rey11 said:

2001 gmc sierra crew cab bagged front and back, with c notch. on hard acceleration the oil cooler line on the transmission side keeps blowing out causing my fluid to go every where. When driving normally it’s fine but hard acceleration no. The metal clip on the transmission but the line blows out each time. And everytime I pull over, wait 15 minutes connect the line back and new fluid, and trans good if I drive nice and slow.  

 

Any work recently done to it?  Corvette servos or tuning or someone upping the line pressure?

 

At near 22 years old, I would not be surprised if the cooler(s) are plugged by now.  GM dealerships test the flow amounts with the TransFlow machine.  Might be time for a new radiator and external transmission cooler.

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