It leaks slowly when the engines in run.
My 1999 GMC Yukon is leaking oil from the steering gearbox. Should i replace it. on 1999 GMC Yukon
iv never seen anyone have luck with stop leak. look above steering box to make sure a line is not leaking and making it look like the steering box is leaking
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You can try a stop leak additive to seal it but, even if it works, you will need to replace eventually. Be sure to locate the exact area of the leak. May just be a cut hose or line.