However, here's a general outline of the steps involved:
1. Safety First:
* Disconnect the negative battery cable. This prevents accidental shorts and electrical hazards.
* Use jack stands. Never work under a car supported only by a jack.
* Wear safety glasses. Broken belts can fling debris.
* Have the correct tools. You'll need a socket set (likely metric), wrenches, possibly a ratchet and extensions, and potentially a belt tensioner tool. A new power steering belt is also essential.
2. Accessing the Belt:
* Locate the power steering pump. This is usually on the side of the engine.
* Identify the belt routing. Carefully examine the belt's path around the pulleys (crankshaft, power steering pump, alternator, etc.). Take pictures or make notes *before* removing anything. This is crucial for correct reinstallation.
3. Removing the Belt:
* Loosen the belt tensioner. This is the key step. Some tensioners are spring-loaded and require you to use a tensioner tool to release tension (usually a socket or wrench on a specific bolt). Others might have a bolt to loosen to release the tensioner. Again, your repair manual is critical here as the location and method vary between DeVille models.
* Remove the belt. Once the tension is released, the belt should be easy to slip off the pulleys.
4. Installing the New Belt:
* Route the new belt. Carefully follow the path you noted or photographed. Ensure it's properly seated on all the pulleys.
* Tighten the belt tensioner. Once the belt is routed correctly, tighten the tensioner bolt or release the tensioner tool, allowing the tensioner to pull the belt taut.
5. Testing:
* Reconnect the negative battery cable.
* Start the engine. Listen for any squealing or unusual noises that might indicate improper belt tension or alignment.
* Check for belt slippage. The belt should run smoothly.
Important Considerations:
* Belt Tension: The belt must be taut but not over-tightened. Over-tightening can damage the belt and pulleys. Your repair manual will likely specify the correct tension.
* Pulley Condition: Inspect all pulleys for damage or wear while you have the belt off. Damaged pulleys can cause premature belt failure.
* Fluid Levels: Check your power steering fluid level after replacing the belt. A low level can also contribute to squealing.
Disclaimer: This is general guidance. Improperly performing this repair could result in damage to your vehicle or personal injury. Always consult a repair manual specific to your 1997 Cadillac DeVille before attempting any repairs. If you're uncomfortable with this task, it's best to take your car to a qualified mechanic.
