Diagram for 2004 chevy impala engine - 2004 Chevrolet Impala

you did not specify what engine.
google 2009 chevy impala serpentine belt Diagram


copy and paste

https://www.justanswer.com/chevy/3ruw6-need-serpentine-belt-diagram-2006-chevy-3-5-lt.html

https://www.fixya.com/cars/t15630016-diagram_serpentine_belt_2009_impala_3_5l

https://www.modifiedlife.com/2004-chevrolet-impala-car-radio-wire-guide/

Sorry we do not have that. I suggest you try and find a factory manual on CD from Ebay. Here is a link to one, only $17.00 Chevrolet Impala 2000 2001 2002 2003 2004 2005 Factory Service Repair...

You have a fuse panel on the right side(passenger) of the dash panel (open the door to access it).You also have two fuse blocks located in the engine compartment. One is located on the right side by the coolant reservoir, the other is located next to the window washer reservoir.

(440) Automatic Transmission Input Shaft Speed (A/T ISS) Sensor Assembly

Which engine do you have ?
There should be a diagram on the hood or the radiator support.

Need diagram for serpetine belt 07 Impala LT 3.9 engine V6

hello here is the firibg order. ther are two engines for the impala. here is both engines. 3.4 and 3.8

3.4


Starting from the front of the engine, the left bank cylinders are 1, 3, 5. The right bank cylinders are 2, 4, 6.
3.8
Starting from the front of the engine, the left bank cylinders are 1, 3, 5. The right bank cylinders are 2, 4, 6.

I do not know if you have the 3.4L or 3.8L Engine; however, I have included both below:

For the 3.8L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
(back of engine)
2------4------6
1------3------5
(front of engine)
Ignition Connections:
(back)
o <----6
o <----3
___
o <----2
o <----5
___
o <----4
o <----1
(front)

For the 3.4L:
Firing Order:
1-2-3-4-5-6
Cylinders:
(back of engine)
2-----------1
4-----------3
6-----------5
(front of engine)
Ignition Connections:
.........(back)
.|.5..2.|.|.3..6.|.|4..1.|
.........(front)

Let me know if this helped....

I would go to Alldata.com on line for your vehckle to get the wiring diagrams.