How to install Serpentine Belt
Click on the following free direct Link. It has the Serpentine Belt Diagram and Tensioner location for your 2002 GMC Envoy. Plus Instructional and Directional Diagrams you will find very useful.
http://www.2carpros.com/car_repair_information/year/2002/make/gmc/model/envoy/2002_gmc_envoy_drive_belt_routing_diagram.htm
GENERAL/Standard Rules to Removal the Serpentine Belt with a Tensioner:
A. Find the Tensioner(s). (See Diagrams on Link)
B. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT (on the Pulley or Arm Base) OR the OPENING (3/8ths or 1/2 inch square opening) rotating the Tensioner Pulley/Arm - moving it away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
C. Remove the loosened belt off one of the other more easily accessed Pulleys.
D. DO NOT quickly release the Tensioner, but gently allow the Tensioner to rest in its closed position.
Standard Rules for Installing the Serpentine Belt with Tensioners:
a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.
Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!
Kia_Sedona_2002-2006
Accessory Drive Belts
Fig. Accessory serpentine belt routing-3.5L engine
Fig. Accessory serpentine belt routing-3.5L engine
Fig. Accessory serpentine belt (A) routing-3.8L engine
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.
Removal & Installation
Fig. Accessory serpentine belt routing-3.5L engine
Fig. Accessory serpentine belt (A) routing-3.8L engine
2.8L and 3.1L Air Pump Belt
Fig. Fig. 6: Unfasten the retaining bolts...
Fig. Fig. 7: ... then remove the serpentine belt guard
Fig. Fig. 8: ...
Fig. Fig. 9: ... then remove the serpentine belt
Fig. Fig. 10: Serpentine drive belt routing-2.2L engine
Fig. Fig. 11: Removal and installation of the serpentine belt-2.3L engine
Fig. Fig. 12: Serpentine belt routing-2.5L engine with and without A/C
Fig. Fig. 13: Use an 18mm box end wrench on the pulley nut to rotate the tensioner on the 3.8L engine
Fig. Fig. 14: in. breaker bar to rotate the tensioner
Fig. Fig. 15: On the 3.4L, use a box end wrench, then rotate the tensioner clockwise and remove the serpentine belt
Remove the belt guard or coolant recovery reservoir as required.
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