:sign0144: Just wanted to introduce myself to the group and say hello from Wisconsin. I drive a 99 silverado NBS. 220K! Still going strong. I do have an issue that I'm hoping someone here can offer some help with. The truck has no power under a load. We've checked backpressure at the 02 Sensor before the converters. That was ok. I've gotten no light lately. I had one a few months ago when the problem first came about. It was a multiple random cylinder misfire. It came once. We cleared it. It's never came up again. This problem started out small and has gotten worse in the past month. MUCH worse. New plugs/wires less than a year ago. Replaced leaking intake gasket year ago. New MAF sensor a year ago. Replaced broken manifold bolt a year ago. It sounds like there is a howl under the truck when you put it under a load and it simply has NO POWER under load either. I hate taking it to a dealer because I'm stubborn, single, and not rich enough to pay the ridiculous price to have it diagnosed. Any suggestions? Has anyone with an older NBS style silverado had to replace injectors? This truck still has the original water pump, starter, and injectors! It leaks or burns NO OIL!! It's paid for, it goes every time I start it, and it's a safe comfortable ride. I cant part with it. It just needs a little TLC. Thanks in advance. C in Wisconsin. "There is no word in japanese....for truck."