General Approach (Both Engines):
The tensioner is usually a spring-loaded pulley that you need to move to loosen the belt. This is typically done with a wrench or socket, but the *exact* tool and location will depend on your engine. Do not attempt this without the correct tools and a repair manual specific to your 1997 Chevy S10's engine.
How to Find the Right Information:
1. Identify your engine: Look for an engine code (e.g., VIN) on your vehicle's documentation or a sticker in the engine bay. This will tell you if you have a 4.3L V6 or a 2.2L I4.
2. Obtain a repair manual: A Haynes or Chilton repair manual specifically for your 1997 Chevy S10 with the correct engine is essential. These manuals will have diagrams, specifications, and step-by-step instructions on how to loosen the tensioner and replace the serpentine belt. Online repair manuals are also available, but be sure they're reputable.
3. Locate the tensioner: With the repair manual, you can pinpoint the tensioner's location and the best way to access it. Often, it's near the alternator or power steering pump.
4. Use the correct tool: The manual will specify the correct size wrench or socket required to turn the tensioner. Improper tools can damage the tensioner or surrounding components.
Caution:
* Safety First: Wear safety glasses and gloves. Use jack stands to support the vehicle properly if you're working under it.
* Sharp Edges: Be mindful of sharp edges on the engine components.
* Belt Tension: Once the belt is loose, be careful not to let it snap back and cause injury.
* Proper Torque: When you're finished, tighten the tensioner to the manufacturer's specification found in your repair manual to avoid premature wear or failure.
Without a repair manual specific to your vehicle and engine, attempting to loosen the tensioner is risky. You could damage the tensioner, the belt, or other components. Investing in the correct manual is crucial for a safe and successful repair.
