This video will show you how to replace a fuel pump on a 2003 chevrolet trailblazer with the 4.2.It's possible to do it by yourself but it's better to have help. If you have any questions feel free to ask and subscribe.

!!!FUEL PUMP GM PART!!! BOMBA DE COMBUSTIBLE PARTE GM!!!
https://www.amazon.com/ACDelco-MU1837...