Like suggested..open access door and LOOK
Drain plug not installed....install and tighten
T&P Relief Valve stuck open...flip lever and let it snap closed....do couple times
Now IF the tank is cracked or it is leaking from around welded components then you have to replace the WHOLE water heater. Suburban does NOY have replacement tanks...
Can replace with a Suburban of same size---ie: 10 gal (could use a Atwood but would have to completely redo opening as they are different sizes)
PPL usually has sales that are lower then other sources. And your SW10D is propane only with electronic ignition so it is on the lower price scale vs combo unit---which you could install just have to add 120V AC power source and run wiring
Right now PPL has SW10DE.......propane/electric for $392
And a SW10D.......propane DSI for $362
New complete water heater....except door----use your old one
PPL LINK
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31