2008 Buick Lacrosse Belt Diagram (2024)

FAQs

Where is the serpentine belt diagram? ›

Some vehicles have the serpentine belt diagram located on a decal somewhere in the engine compartment. But if your car does not have a decal, you can easily look up the diagram in a repair manual or repair database. Another option is to take a photo of the old belt before removal.

Where can I find a belt routing diagram for my engine? A: Commonly a belt routing diagram sticker is on the underside of the hood or in the engine compartment.

Depending on the engine in your vehicle, the serpentine belt may be located at the front of the engine bay, or it may be along one side. There may be engine covers in the way, so be prepared to remove them if need be.

Where is the belt tensioner located? The single belt loops around all the different pulleys on your engine, but one pulley has a tensioner arm, which will be the only pulley the has a square, 3/8-inch hole in the center. That hole is for a 3/8-inch ratchet nub, the part that holds the socket.

Replacing the serpentine belt is as simple as threading it into position, cranking the tensioner and slipping the belt over the tensioner pulley, or nearest pulley up top. Belt tensioners are mostly spring tension. Once installed, the spring retains pressure to the belt.

The timing belt is inside the engine and keeps the crankshaft and camshaft in sync. It ensures that the engine intake and exhaust valves open and close in time with the pistons so the engine runs smoothly. The serpentine belt is what keeps the engine accessories running smoothly and efficiently.

Place the target tool (the other part of the laser alignment tool) on the pulley that needs to be checked. Rotate the target pulley and observe if the laser is shining on the target. The laser should meet the target tool right on the dedicated center marking. This indicates a properly aligned pulley.

Whether you go to the mechanic or do it yourself, replacing a serpentine belt costs $58 to $126. The price of a serpentine belt starts at around $25 and goes up to $75 at most. It typically takes about an hour to replace the serpentine belt, and if you know some car repair basics, you could change the belt yourself.

If you do notice your belt needs replacing, you can do it yourself if you're mechanically minded and have the time. It'll take about 1 or 2 hours, but they're relatively inexpensive and straightforward to repair.

A serpentine belt (or drive belt) is a single, continuous belt used to drive multiple peripheral devices in an automotive engine, such as an alternator, power steering pump, water pump, air conditioning compressor, air pump, etc.

How to find a drive belt? ›

Unlike the timing belt which is usually 'hidden' behind a cover, the serpentine belt is usually easy to spot. On rear-wheel drive cars you'll see the drive belt right up on the front of the engine.

Serpentine belts don't require tension adjustment. Instead, a spring-loaded or hydraulic tensioner has a pulley that leans against the belt. In addition to the pulley on the tensioner, there may be another idler pulley that routes the belt.

If the belt breaks while driving, it can lead to a sudden loss of power steering, making it difficult to control the vehicle, which can be dangerous, especially at high speeds or in heavy traffic. Additionally, a broken serpentine belt can cause the engine to overheat rapidly.

Since an overheated engine can be due to several different serious causes, you'll want to have your car inspected as soon as possible. You spot visual signs of wear: Cracks, splits, and fraying are visual indicators of a worn belt. If the belt's sides are glazed over, the belt won't last much longer.