I need a routing diagram for the serpentine belt on a 4.0 L 6cyl. engine

Below is the master help link provided to go through belt routing diagram:---Timing belt, drive belt, serpentine belt, accessory belt, fan belt, engine belt routing diagrams for all types of car models?
Click the link below: ----

http://carbeltrouting.blogspot.in/2012/02/timing-beltdrive-beltserpentine.html
----------This will help. Thanks.

Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.

3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.

4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.

5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.

6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb

Fig. Accessory serpentine belt routing-4.3L, 5.0L and 5.7L engines without A/C




Fig. Accessory serpentine belt routing-4.3L, 5.0L and 5.7L engines with A/C

Fig. Accessory serpentine belt routing-6.5L Diesel engines

Fig. Accessory serpentine belt routing-6.6L Diesel engines

Hope this helps (remember to rate this answer).

Hi, first, keep this diagram around as you will need it to route the serpentine belt when you reinstall it. There may also be a diagram under the hood by the radiator.
Next, follow this link and watch the video that shows you how to replace a serpentine belt...
http://www.wonderhowto.com/how-to/video/how-to-inspect-and-replace-your-car-s-serpentine-belt-267229/
Take care

Fig. Serpentine accessory drive belt routing-3.0L (VIN U) engine


Fig. Serpentine accessory drive belt routing-3.0L (VIN S) engine


Fig. Serpentine accessory drive belt routing-Ford 3.0L (VIN U) engines


Fig. Serpentine accessory drive belt routing-Ford 3.0L (VIN S) engine


Fig. Serpentine accessory drive belt routing-Ford 3.4L SHO engine


Fig. Water pump drive belt routing-Ford 3.4L SHO engine
i wasnt sure what engine you had hope this helps good luck

You didn't list your motor size so please pick the applicable diagram:


Accessory serpentine belt routing—4.8L, 5.3L & 6.0L engines


Accessory serpentine belt routing—5.7L engines with A/C


Accessory serpentine belt routing—5.7L engines without A/C


Accessory serpentine belt routing—6.5L Diesel engines


Accessory serpentine belt routing—7.4L engines


Accessory serpentine belt routing—8.1L engines

PLEASE DON'T FORGET TO RATE!!!


Accessory serpentine belt routing-3.0L engine


Accessory serpentine belt routing-3.8L engine

The serpentine belt routing should be labeled on your radiator shroud. Look around the engine compartment like the hood or radiator fram suport and there should be a label with the the belt routing.
Good luck and hope this helps

2.0L Engines
See Figures 11, 12 and 13
The accessory drive belt for 2.0L engines has no provision for manual belt adjustment, since these engines use an automatic belt tensioner. Drive belt slack is taken up by the automatic tensioner.
Movement of the automatic tensioner assembly during engine operation is not a sign of a malfunctioning tensioner. This movement is the tensioner self-adjusting and is required to maintain constant belt tension.
The belt tensioner has a belt length indicator. If the indicator marks are not between the MIN and MAX marks, the belt must be replaced.
Fig. 11: Drive belt routing-2.0L SOHC engine with A/C Fig. 12: Drive belt routing-2.0L SOHC engine without A/C Fig. 13: Drive belt routing-2.0L DOHC engine