Ok. You seem to have many more things going on than just a no start problem/stalling (water pump, brakes etc). I don't know how much you know about car, but as an FYI replacing a water pump, brakes, rotors and serpentine belt is not a very complicated job. You could do it yourself with a manual.
Now regarding your main problem, the car shop should be able to run some tests and tell you what's going on. A fuel pressure test would tell you a good deal of info about your fuel system.
If you check voltage at the fuel pump, it would tell you if the pump is getting current. If both tests are fine, then you can probably rule out your fuel system.
If your ignition is loose, you could have a bad connection or something which would explain your car stalling once started or the intermittent no start.
You're saying you can hear your fuel pump when you turn your key in the ignition, but is your car cranking, or is it silent?
If it's silent, I would check the starter solenoid because your starter is not getting current. Check for current at the solenoid. If it's getting current but the starter remains silent when you try to crank the car, your solenoid is probably bad and need to be replaced.
If your solenoid doesn't get current, the problem could be a loose connection, wiring, defective park/neutral switch, defective brake safety switch, bad ignition switch. Check for voltage at the ignition switch, and at each safety switch, this should tell you which one is defective.
Now, you may also have a problem with your theft deterrent system. A lot of people are having intermittent no start problem with their chevy due to a defective theft deterrent system.
It could also be that your ignition is not recognizing your key anymore.
Anyway, let me know what you find out.
Friday, September 12th, 2008 AT 10:06 AM