Fuel Filler tank hose, or?
 

I'm suspecting a slight leak from the fuel filler neck hose. Is this or a nearby part a common issue? When the air is still, I smell a very slight fume coming around that area and near the right tail light. It isn't inside the cabin at all, and nothing from the front or left rear. I've replaced the OEM Gas Cap with a Stant. It's definitely helped, but still present. Very localized. I will be taking it in tomorrow to get the 3 recalls fixed, so tomorrow's my chance to ask them as well. I just don't want the dealer trying to sell me a $2000 repair for something I could replace. I've had dealings with my GM dealer, who always tries... lol

Fuel or vapor line leaks at the driver's side rear tire are common...

I'd suggest crawling under & take a good look at the fuel lines. Many here have had to replace them, from salt & /or just plain corrosion.

Check in this thread

https://www.chevyhhr.net/forums/how-...follies-62310/

Thanks for all the help... Seems like all of these quirks are just the things that are standard for them, and nothing out of the ordinary, or not experienced on here.

Sorry Sleeper but have to ask.
Do they salt roads in Hawaii ?
Unless this car was shipped used from the mainland. Then it's a possibility.
I'm not breaking your shoes, would like to know the OP answer to this.

I’ve had Florida cars have corrosion from the ocean air, this might be the case in Hawaii .
moisture is the culprit, it gets trapped in the insulation sleeve in the fuel lines.

Second this, on an older car like these you can't be certain without checking.

If there are no codes, that's a big clue. It's not in the evap system. It's filler pipe, tank, or lines. The evap system is designed to contain fuel vapors. Leaks there cause codes.

I've seen many Fla cars rotted away from the salt air, near the ocean. It's better to check thoroughly first, that find out bad after..

You’re right, we don’t have any use for salted roads here, and usually the undercarriage of cars don’t rust or rot here. Our biggest issue is usually paint (sun damage) or mildew. Those are the worst of it. Since the pacific water is deep and the ocean is cool around us, fortunately we don’t have evaporative salt air like Florida with its hot shallow waters. I’ve been to Palm Beach FL and I can attest to that salt smell in the air. Nothing like that here.

I still need to check the lines but I just ordered a Chilton manual on Monday so I can see the diagram and know exactly what I’m looking at. It’s crazy how much the fuel line structure can vary between GM makes/models. The book should arrive on the weekend or so, so I’m planning to tackle that this coming week. I want to be safe rather than sorry, since it’s dealing with gas.