If you open the low point drain access you may be able to use a mirror to view the back of the panel. Light up the back area of the panel and position the mirror around to check it out. There should be a way to access the area by removing the panel to the left. If not, by looking thru the low point drain access you can see where to cut an access to the left. You should be able to tighten the fittings thru the low point drain access. Good luck.
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Married To The Navigator
2005 Red GMC Duramax 4X4 HD Crew Cab
2018 North Point 315RLTS
4" Magnaflow, Banks Air Intake
Firestone Ride Rite Air Springs
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