Under hood fuse box diagram for 2003 Chevrolet Impala?

There are two fuse box under hood in 2003 Chevy impala.

See the diagram below

Here are the fuse block location and labels.

As for it not starting, if moving the relays around is when you noticed the problem, then you should try to get the relays back to their original locations, as much as possible.

One of the rules of troubleshooting (guideline really) is the you should only change one thing at a time and then test what happens. If you don't notice any change, the put the parts back in their original location.

Here is the label for the top fuse block.

And here is the one for the bottom fuse block.

This will help.

Thanks.

See below fuse related help solutions :----

While going in reverse mode Fuse number 27 blows on Ford Ranger?

http://howtobyme.blogspot.in/2012/02/while-going-in-reverse-mode-fuse-number.html

Where is the fuse for the master power window switch located on gmc envoy?
http://technoanswers.blogspot.com/2011/07/where-is-fuse-for-master-power-window.html

Car cigarette lighter fuse blows out?

http://schematicsdiagram.blogspot.com/2011/12/car-cigarette-lighter-fuse-blows-out.html

Where is Fuse box located on 2002 Honda Accord?

http://howtobyme.blogspot.com/2011/12/where-is-fuse-box-located-on-2002-honda.html

Which Fuse controls A/C system on 2003 Ford Taurus?

http://howtobyme.blogspot.com/2011/12/which-fuse-controls-ac-system-on-2003.html

1997 Chevy Malibu Cigarette Lighter Fuse?

http://schematicsdiagram.blogspot.com/2011/12/1997-chevy-malibu-cigarette-lighter.html

Where is Instrument cluster Light Fuse located on 1996 Honda Accord?

http://schematicsdiagram.blogspot.com/2011/12/where-is-instrument-cluster-light-fuse.html

1997 Cadillac Catera FUSE panel Diagram?

http://schematicsdiagram.blogspot.com/2011/12/1997-cadillac-catera-fuse-panel-diagram.html

Driver side Cigarette lighter not working on 2003 GMC Yukon XL

http://schematicsdiagram.blogspot.com/2011/12/driver-side-cigarette-lighter-not.html

Where Is Radiator Fan relay and Fuse Located on 2004 GMC Envoy?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radiator-fan-relay-and-fuse.html

Where is Radio Fuse Located On 2006 dodge sprinter

http://schematicsdiagram.blogspot.com/2011/12/where-is-radio-fuse-located-on-2006.html

1994 Mazda Protege Drive side Fuse box Diagram?

http://schematicsdiagram.blogspot.com/2011/12/1994-mazda-protege-drive-side-fuse-box.html

Where is Radio Fuse located on 2007 Dodge charger?

http://schematicsdiagram.blogspot.com/2011/12/where-is-radio-fuse-located-on-2007.html

Power windows, Door locks and Power mirrors all together stopped working on 2004 Jeep Grand Cherokee?

http://schematicsdiagram.blogspot.com/2011/12/power-windowsdoor-locks-and-power.html

No power to Courtesy Lights and sunroof?

http://technoanswers.blogspot.com/2012/01/no-power-to-courtesy-lights-and-sunroof.html

Where is ACC fuse and Dome light fuse located on Toyota Scion?

http://repairhelpcenter.blogspot.com/2012/01/where-is-acc-fuse-and-dome-light-fuse.html

Where is flasher unit located on 1994 ford ranger?

http://technoanswers.blogspot.com/2012/01/where-is-flasher-unit-located-on-1994.html

Where is the Odometer controlling fuse located on Ford SUV?

http://technoanswers.blogspot.in/2012/01/where-is-odometer-controlling-fuse.html