I have a 1998 blazer and I just put a new battery in it. I was driving down the 101 today and I just lost all throttle. I put it to the floor and no response. I was "dead in the water" in 4 o'clock traffic right at the construction by the 60. Everything else is working. Think its the fuel pump? Usually when I first start it I let the fuel pump do its thing (buzzzzzz) and then I turn the ignition. But now I get a very faint "buzzzzzz" when I turn the key and it just turns and turns but will not fire. Anybody who can help please help. I'm pretty sure it's the fuel pump but i am hoping it is something simple since a new pump is around $300. And unfortuneately right now thats a lot of coin for me to spend.Thank you all.