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Old 06-13-2019, 03:20 PM   #4 (permalink)
Diesel Expert
Join Date: Jan 2008
Location: SW ONT
Posts: 2,790

How fast did it go down?

Have you checked that hose clamps are tight?
2018 L5P Sierra 4x4 SB Denali
Sold 2011 LML Sierra 4x4 CCSB SLT
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Sold 2004.5 LLY Sierra 4x4 ECLB SLE
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