P 0128HC code can't be found!

[jnation]

What does this code mean? I can't find it anywhere.

It is tripping my "CHECK ENGINE" light on almost every start.

I reset the codes each time.

What gives? I'd like to know what it is BEFORE I take it to my local dealer.

Thanks, Jeff Nation

[FUBU69]

I believe it's an emission code. It has something to do with your your header and exhaust install. I am currently testing a set of o2 sensors designed for for the '02 LS6. It has worked so far. The current sensors on the market are designed for prior LS1 and LS6 motors. More to come on these sensors in the next 2 weeks Fubu/Les

[jnation]

I found out today that it is my 160 degree thermostat----I have to get it replaced. No big deal. Thanks