Bonneville, LeSabre, Park Avenue 2000-2005

Accessory Drive Belts

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Adjustment



Drive belt tension is automatically adjusted by the drive belt tensioner.

Belt Tension Inspection



Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Drive Belt Routings





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Fig. Accessory drive belt routing -3.8L (VIN K) engine



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Fig. Accessory drive belt routing -3.8L (VIN 1) engine



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Fig. Accessory drive belt routing -4.6L (VIN Y) engine



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Fig. Serpentine drive belt routing-GM -C and H- Bodies 3.8L (VIN 1) engine

Removal & Installation



3.8L Engine
  1. Rotate the tensioner counterclockwise to remove the drive belt.
  2.  
  3. Remove the accessory drive belt from the engine.

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    Fig. Accessory drive belt routing -3.8L (VIN K) engine



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    Fig. Accessory drive belt routing -3.8L (VIN 1) engine

  4.  

To install:

  1. Position the accessory drive belt to the pulleys.
  2.  
  3. Rotate the tensioner clockwise to install the drive belt.
  4.  

4.6L Engine
  1. Install a 1/2 inch extension into the drive belt tensioner.
  2.  
  3. Push down on the extension to release tension.
  4.  
  5. Remove the drive belt from the power steering pump.
  6.  
  7. Slowly return the tensioner to the original position.
  8.  
  9. Remove the belt.

    Click image to see an enlarged view

    Fig. Accessory drive belt routing -4.6L (VIN Y) engine

  10.  

To install:

  1. Thread the drive belt through all the pulleys except for the power steering pump (1) and the drive belt tensioner
  2.  
  3. Insert a 1/2 inch drive extension into the drive belt tensioner.
  4.  
  5. Push down on the tensioner and feed the belt around the tensioner wheel.
  6.  
  7. With the tension applied, complete the belt routing. Make sure the belt is properly seated in all pulleys.
  8.  
  9. Slowly return the tensioner back to its original position. This will apply tension to the drive belt.
  10.  
  11. After the installation, inspect the belt for the proper routing and the correct alignment.
  12.  
  13. Start the engine and check for proper belt and accessory operation.
  14.  

 
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