However, if you're determined to do it yourself, here's a general outline. This is not a complete, step-by-step guide. You'll need a detailed repair manual specific to your 2000 Saturn LW V6 3.0L. A Haynes or Chilton manual is a good starting point. Online forums dedicated to Saturn vehicles may also offer additional guidance, but always cross-reference with your manual.
Before You Begin:
* Consult a repair manual: This is crucial. It will provide specific torque specifications, component locations, and step-by-step instructions.
* Gather tools: You'll need a complete set of metric sockets, wrenches, screwdrivers, pliers, jack stands, a torque wrench (essential!), and potentially specialized tools like a timing belt tensioner tool.
* Safety first: Wear safety glasses and gloves. Disconnect the negative battery terminal to prevent accidental short circuits.
* Mark everything: Before disconnecting anything, carefully mark the position of components, especially the crankshaft and camshafts, to ensure proper reassembly. Use a paint marker or a piece of tape to align components.
General Steps (Consult your repair manual for specifics):
1. Preparation: Drain the coolant, remove the serpentine belt, disconnect various components (like power steering pump, alternator, etc.) to access the timing belt cover. Your repair manual will detail which components need to be removed.
2. Timing Belt Cover Removal: Carefully remove the timing belt cover(s).
3. Camshaft and Crankshaft Position: Using your repair manual, find the correct procedures to locate the Top Dead Center (TDC) for the number one cylinder. This is absolutely crucial for proper timing. Usually this involves using the crankshaft pulley and a timing mark on the crankshaft.
4. Timing Belt Tensioner Release: You'll likely need a specialized tool to release the tension on the timing belt tensioner. This allows you to remove the old belt.
5. Timing Belt Removal: Carefully remove the old timing belt.
6. Installation: Install the new timing belt, ensuring it's properly aligned with all the marks you made earlier. Use your repair manual to check alignment on all sprockets and ensure the belt routing is correct.
7. Timing Belt Tensioner: Re-tension the timing belt tensioner using the appropriate tool and torque specifications from your repair manual.
8. Reassembly: Reinstall all the components you removed earlier, paying close attention to torque specifications for all bolts and nuts.
9. Refill Coolant: Refill the coolant reservoir and bleed the cooling system.
10. Testing: Start the engine and check for any unusual noises or leaks. Verify that the engine is running smoothly.
Again, this is a highly simplified overview. Using a detailed repair manual specific to your vehicle is absolutely essential. Improperly installing a timing belt can lead to serious engine damage, requiring costly repairs. If you're unsure about any step, consult a professional mechanic.
