However, if you're determined to do it yourself, here's a general outline. Specifics may vary slightly depending on the exact engine in your Century (3.1L V6 or 3.8L V6). Consult a repair manual specific to your year and engine for detailed diagrams and torque specifications.
Tools You'll Need:
* New serpentine belt: Make sure to get the correct belt size. Your owner's manual or an auto parts store can help you find the right one.
* Wrench(es): Various sizes depending on your car, likely including a socket wrench set with extensions and possibly a ratchet. You'll need wrenches to loosen the tensioner pulley.
* Socket set: Preferably with both metric and SAE sockets.
* Jack and jack stands: Essential for safety. Never work under a car supported only by a jack.
* Wheel chocks: To prevent the car from rolling.
* Gloves: To protect your hands.
* Shop rags or paper towels: To clean up any spilled fluids.
* Pry bar (optional): Might be helpful for stubborn pulleys.
* Repair manual: Highly recommended. This will provide specific diagrams and torque specifications for your vehicle.
General Steps (Always refer to your repair manual for exact procedures):
1. Safety First: Park your car on a level surface, engage the parking brake, and use wheel chocks. Jack up the front of the car and securely support it with jack stands.
2. Locate the Serpentine Belt: Identify the serpentine belt and its path around the various pulleys (crankshaft, alternator, power steering pump, etc.).
3. Locate the Belt Tensioner: This is a pulley with a mechanism to release tension on the belt. It usually has a bolt or a lever that you'll need to loosen or move to release tension. This is the crucial step. Your repair manual will show exactly where it is and how to release it.
4. Release Belt Tension: Use the appropriate wrench to loosen the tensioner. You might need to use a pry bar to help maneuver the tensioner, but be careful not to damage anything.
5. Remove the Old Belt: Once the tension is released, the belt should slip off the pulleys. If it's stuck, gently work it free.
6. Install the New Belt: Carefully route the new belt around all the pulleys in the same order as the old belt. Make sure it sits correctly in all the grooves.
7. Re-tighten the Tensioner: Once the new belt is on, re-tighten the tensioner bolt or lever.
8. Check Belt Tension: The belt should have a slight amount of give when pressed. Too tight or too loose is bad.
9. Lower the Car: Carefully lower the car back to the ground.
10. Start the Engine: Start the engine and listen for any squealing or unusual noises. Check for belt slippage.
11. Double Check Everything: Visually inspect the belt routing one more time.
Important Considerations:
* Tensioner Type: Tensioners vary. Some use a bolt, others a lever. Your manual will show you how yours works.
* Torque Specifications: Tighten all bolts to the manufacturer's specifications found in your repair manual. Over-tightening can damage components.
* Belt Routing: Get the routing absolutely correct. A misrouted belt will cause problems.
Again, this is a general guide. A repair manual specific to your 1995 Buick Century is absolutely essential for safe and successful completion of this task. If you're unsure about any step, consult a professional mechanic. Improperly replacing the serpentine belt can lead to serious engine damage.
