Does anyone know who makes this system? I found it on HummerPartsOnline and GMPartsDirect, but it doesn't say who makes it.
The part number is 19154703. The description on HummerPartsOnline is:

Performance Exhaust System, Catalytic Converter Back Dual Rear Exit (Exhaust tips not included)

There is also a touring version.

Try looking at the Corsa exhaust...they make the 'officially' licensed GM exhaust for the H2 so I assume they also make the H3 exhaust. They've also got a Touring and a Sport version for the H2.

Question came up a few weeks ago, lots of guessing but no definitive answers on H3 versions. Sorry.

S.

Without asking anyone at GM, I would guess Humdingah is correct. Corsa does quite a few performance exhaust systems for GM. They not only make the H2's, but also the Vette's performance exhaust system.
At the moment, I'm too busy at work to check, trying to solve a problem on how to remove and install a certain I-5 cylinder head without having to remove the front cover, working on a 2.4L Sky/Solstice engine trying to figure out what tool can be used to safely remove the front, torque-to-yield balancer bolt, and trying to get a new job. (Lately, spending more time on the later than any of the formers. )

I have purchased the GM performance exhaust and on my invoice it says it is built by Corsa. It has the H3 logo on the tips and it looks and sounds great. I sent back my GHL exhaust for the Corsa exhaust.

Frisco Ken - Yea the Corsa exhaust system that I have on my H3 has the Corsa name engraved on the tips.

What made you send back the GHL exhaust?

S.

How much is the GM system, if you don't mind me asking?

Thanks