Ok..I have a 1998 blazer that decided one day to quit on me. Since then, we figured out that it was a fuel related issue. We have changed...fuel pressure regulator, fuel filter, cam sensor, fuel pump, and the main computer.
I am not sure if at this point, we are locked out via the security or what. I have tried the 30 minute procedure that is listed in the form. The light will come on (not blink), I wait for it to go out (10 or so minutes) then turn off the key and wait 5 seconds to try to start it...then repeat if needed.
At this point, the battery is very low from trying this repeatedly.
The truck will start for a quick second, then shut off.
Someone please offer me some advice as I am at my wits end!!
I just am not sure if I am locked out, or if something has been overlooked.
Thanks,
Brandi

 

Forgot to mention..... fuel pressure tests ok and there are no codes coming up

 

Put a charge to it and repeat the security. When i swapped my computer i had close to the same issues and i hooked up jumpers and kept the battery charged by running the other vehicle and then did the security and it worked.

 

I did hook up jumpers to it and I still can't get it to start. I have tried the relearn back to back several times in a row. It will run for a second if I put ether in the throttle body. Then it just dies back out.
I also just replaced the throttle position sensor today, and I am still in the same boat

 

Can you manually feed it fuel and keep it running?

 

yes, if you keep pouring fuel into the throttle body it will run. As soon as it is gone, it dies. I am down to the injectors, or possibly a security issue. It gave me absolutely no warning, I just turned it off, and it wouldn't start back up. Any input is greatly appreciated.

 

Ok. I am not claiming to be great at this, but just trying to help.

Did you make certain the new compuer is for your vehicle. I know I can only use an 05-06 comp I think and the 02 cant be used in any other year. That is for Trailblazers, but may be similar issue for you....

 

Yes, I gave them my VIN, and some info off the original computer, and they flashed a new one for me based on that info.

 

Is the fuel pump running...I replaced one on my 87 s15 and it was supposed to brand new, and it never worked. had to take it back for a new one.

 

I replaced the fuel pump yesterday. I can hear it running when I turn over the key. Fuel pressure is normal in the mid 50s to 60.