However, most use one of two common methods:
Method 1: Automatic Tensioner (Most Common):
This is the most likely scenario. Your truck likely has an automatic belt tensioner that uses a spring-loaded pulley. This pulley pivots to adjust belt tension. You'll need a wrench or socket (size will vary depending on the truck - check your owner's manual or look at the tensioner to identify the bolt head size).
1. Locate the tensioner: It's usually a pulley near one end of the serpentine belt. It will often have a pivot point and possibly a visible spring.
2. Identify the tensioner bolt: This is the bolt that controls the tensioner's position.
3. Loosen the tensioner: Using the correct wrench, carefully turn the tensioner bolt (usually counterclockwise) to relieve tension on the belt. This may require some force. Be careful—the tensioner may spring back quickly when you release pressure, so be prepared.
4. Remove the old belt: Once the tension is released, you can slip the belt off the pulleys.
5. Install the new belt: Place the new belt onto the pulleys in the correct order (follow the routing diagram under the hood or in your owner's manual).
6. Tighten the tensioner: Slowly release the tensioner bolt, allowing the tensioner spring to pull the belt into place.
7. Check tension: After the tensioner is released, verify that the belt is properly seated and tensioned. You should be able to twist the belt about 90 degrees with moderate effort. If you can twist it too easily, it's too loose. If it's extremely difficult, it's too tight.
Method 2: Manual Adjustment (Less Common):
Some older trucks may have a manual tensioner. This usually involves a bolt that adjusts the position of an alternator or power steering pump to change belt tension.
1. Locate the adjustment bolt: This will be on the alternator or power steering pump, usually near the belt.
2. Loosen the adjustment bolt: Use the correct wrench to loosen the adjustment bolt.
3. Adjust the tension: Turn the bolt to increase or decrease the belt tension (check your manual to see which way to turn it for tightening).
4. Tighten the adjustment bolt: Once the belt tension is correct, tighten the adjustment bolt securely.
Important Considerations:
* Safety First: Disconnect the negative battery cable before working on the serpentine belt. This prevents accidental shorts.
* Owner's Manual: Consult your 1996 Chevy truck's owner's manual for specific instructions and diagrams. This is crucial to avoid damaging components.
* Routing: The serpentine belt has a specific routing over the pulleys. Misrouting can lead to premature wear or component damage. Your owner's manual will have a diagram.
* Belt Tension: Incorrect belt tension can lead to premature belt wear, squealing noises, or even damage to the alternator or other components.
* Professional Help: If you're uncomfortable performing this repair yourself, take your truck to a qualified mechanic.
Remember to replace the belt with a belt of the correct size and rating specified in your owner's manual. Using the wrong belt will create problems.
