We are in need of a diagram for the correct routing of a serpentine belt for a 1999 gmc k3500 6.5 liter diesel 4 wheel drive truck. We are trying to get the plow running since a huge storm is headed our way. many thanks Rick

hope this helps? should do it for you.
https://www.justautorepair.com/multimedia/1-belts-diagrams/detail/129-diesel-belt-routing

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images for diagram on how to replace a serpentine
How To Install Replace Serpentine Belt Oldsmobile Alero 99 ...? 3:33https://www.youtube.com/watch?v=jkzXTt43uwwFeb 9, 2012 - Uploaded by 1A Auto PartsHow To Install Replace Serpentine Belt Oldsmobile Alero 99-04 2.4L .... There should be a belt routing diagram on the frame rail or under side ...serpentine belt install 3.1/ 3.4 v6 - YouTube? 4:00https://www.youtube.com/watch?v=GYoWuvEZ2DcMay 6, 2013 - Uploaded by JoeTheAutoGuythis a serpentine belt install video on a 3.1 liter gm v6 , 3.4 liters are the same in ... Replacing the alternator or serpentine on anyOldsmobile Alero 99-04 3.4 Liter ... Serpentine Belt Replacement 1995-2005 Chevrolet Cavalier .

Here is the link for ya! copy and paste in your browser good luck! http://www.autozone.com/autozone/repairinfo/specifications/specificationsMain.jsp?childCatName=Belt+Routing+Diagram&childCatId=25300467&categoryNValue=25399999&categoryNameForTitle=External+Engine&categoryName=EXTERNAL+ENGINE&childCategoryNameForTitle=Belt+Routing+Diagram#

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



Hope helped with this. (remember rated this). 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

This is a view of the correct belt routing ..

you will have to get ahold of a book for it or go to a junkyard and find one like yours and get the belt routing decal

5.9L DIESEL
The 5.9L diesel engine accessory drive system (with a/c) consists of :

1. Generator Pulley (1)
2. Water Pump Pulley (2)
3. Idler Pulley (3)
4. Power Steering Pump Pulley (4)
5. Radiator Fan Pulley (5)
6. Crankshaft Pulley (6)
7. Automatic Tensioner (7)
8. A/C Compressor Pump Pulley (8)

CAUTION: When installing the accessory drive belt, the belt must be routed correctly. If not, engine may overheat due to water pump rotating in wrong direction. Refer to or for correct engine belt routing. The correct belt with correct length must be used.
1. Position drive belt over all pulleys except water pump pulley. 2. Attach a 1/2 inch ratchet to tensioner.


The 5.9L diesel engine accessory drive system (without a/c) consists of :

1. Generator Pulley (1)
2. Water Pump Pulley (2)
3. Idler Pulley (3)
4. Power Steering Pump Pulley (4)
5. Radiator Fan Pulley (5)
6. Crankshaft Pulley (6)
7. Automatic Tensioner (7)

3. Rotate ratchet and belt tensioner clockwise. Place belt over water pump pulley. Let tensioner rotate back into place. Remove ratchet. Be sure belt is properly seated on all pulleys.

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