[audiofetish]

Originally Posted by M. Grogan

Thanks guys. I was also thinking along those lines. If it does turn out to be the optic sensor, is it replacable? I've seen a few for sale online but I'm not sure if it is a bolt-on component or if it requires adjustment.

Yes it is replaceable. Here is a link to the replacement on a Chevy Truck. http://www.mamut.net/royh/newsdet9.htm

I think the sensors are very expensive. If it comes down to it and you find out yours is bad let me know. I am putting new heads on my 00 HMCS and I am replacing everything from the heads up with new parts. I have a Injector Pump that I could sell you pretty cheap. I can take it to a place downtown that will bench test it to be safe but it worked great until I tore my truck apart. It is complete and you would be able to pull the optical sensor out of it. Just let me know. Good luck!!