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03 Chevy impala 3.8 belt diagram - 2004 Chevrolet Express

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SOURCE: serpentine belt diagram fo 03 chevy s10 4.3 ltr, v6

go to , click on the Parts Locator & Interchange link on the left, put in your vehicle information, after you have put in the engine size look below and find the serpintine belt for you application, ie. w/ac or w/o ac, click the camera icon and there is your routing diagram, hope this helps, let me know

Posted on Jun 23, 2009

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SOURCE: i need a serpantine belt diagram for 2006 chevy

Click on the following direct Link. It has the Serpentine Belt Diagram that you will need.

Posted on Mar 24, 2010

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SOURCE: belt diagram for 2004 chevy impala ss

please let me know if this is the wrong one


Posted on Sep 23, 2010

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SOURCE: I need a diagram for

Hello and welcome. here is a picture of the correct belt routing.


Posted on Oct 06, 2010

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SOURCE: diagram for drive belt replacement 2004 chevy

Check the next diagrams for 2004 Chevrolet Impala 3.8L SFI OHV 6cyl...


Fig. Serpentine drive belt routing-3.8L (VIN 1) Engine (click for zoom)


Fig. Serpentine drive belt routing-3.8L (VIN K) Engine

Removal & Installation - 3.8L Engine

L32 Engine
1. Rotate the drive belt tensioner using a 15-mm box end wrench on the pulley nut.
2. Remove the drive belt.
After the new drive belt is installed, make sure that the mark on the drive belt tensioner is within range, as indicated on the tensioner housing.

3. To install, lift or rotate the drive belt tensioner using a 15-mm box end wrench on the pulley nut.
4. Install the drive belt. Make sure the drive belt is properly routed. Make sure the drive belt tensioner is operating properly.

L67 Engine
The supercharged 3800 engine utilizes two drive belts. The outer drive belt drives the supercharger. The inner drive belt drives the following components:
Power steering pump
Water pump

Air conditioning compressor All driven accessories rigidly mount to the engine. Spring-loaded belt tensioners maintain the drive belt tension. Each drive belt has its own tensioner. A drive belt squeak, occurring when the engine starts or stops, is normal and has no effect on the durability of the drive belt. The drive belt tensioner can control the drive belt tension over a broad range of drive belt lengths, due to stretching. However, there are limits to the tensioner's compensation ability. Poor tension control and/or damage to the tensioner may occur after using the tensioner outside of its operating range. Replace the drive belt when this occurs.

1. Lift or rotate the supercharger drive belt tensioner using a 15 mm box end wrench on the pulley nut.
2. Remove the supercharger drive belt.
3. Lift or rotate the drive belt tensioner using a 15 mm box end wrench on the pulley nut.
4. Remove the drive belt.
5. To install, reverse removal procedure.

Hope helps with this.

Posted on Nov 11, 2010

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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.

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