2017 Chevrolet Silverado 1500: Serpentine Belt

Quick Answer

• Belt Length and Rib Count: 92.5 inches (2350mm), 6-rib
• OEM Belt Part Number: 12658175
• Aftermarket Cross-References: Gates K060923, Dayco 5060923, Continental 4060923
• Automatic Tensioner Part Number: 12669002
• Idler Pulley Part Number: 12626023

Belt Routing

Before you remove the old belt, always take a clear photograph of the belt's path for reference. The routing for the 2017 Silverado 1500 with the 5.3L V8 engine is as follows:

1. Start with the belt wrapped around the main crankshaft pulley at the bottom of the engine.
2. From the crankshaft pulley, the belt travels up to the A/C compressor.
3. Next, it goes around the idler pulley.
4. From the idler pulley, the belt moves to the alternator.
5. Then, it routes to the power steering pump.
6. After the power steering pump, it wraps around the water pump.
7. Finally, the belt goes to the automatic tensioner before returning to the crankshaft pulley.

How to Replace the Serpentine Belt

To replace the serpentine belt, you will need a serpentine belt tool or a 3/8" breaker bar. Insert the tool into the square hole on the automatic tensioner and rotate it to release the tension on the belt. While holding the tensioner, carefully slip the belt off one of the pulleys. Then, slowly release the tensioner. You can now remove the old belt.

To install the new belt, route it around all the pulleys except for the idler pulley, following the path you photographed earlier. Then, use the serpentine belt tool to move the tensioner and create enough slack to slide the new belt over the idler pulley. Once the belt is in place, slowly release the tensioner to apply pressure to the new belt. Double-check that the belt is correctly seated in all the pulley grooves.

Replacement Interval

It is recommended to inspect the serpentine belt at every oil change and replace it every 60,000 to 100,000 miles, or as needed. Refer to your owner's manual for the specific replacement interval for your vehicle.

Signs of a Failing Belt or Tensioner

A failing serpentine belt or tensioner can cause a variety of issues. Look out for the following signs:

• Squealing or chirping noises from the engine: This could indicate a worn or misaligned belt.
• Visible cracks, fraying, or glazing on the belt: These are clear signs that the belt needs to be replaced.
• A/C or charging system issues: If the belt is slipping, it may not be able to properly power the alternator or A/C compressor.
• Engine overheating: A failing belt can't turn the water pump effectively, leading to overheating.
• A tensioner that is stuck or not providing adequate tension: This can cause the belt to slip or come off completely.

If you notice any of these signs, it's important to have your serpentine belt and tensioner inspected and replaced as soon as possible to avoid a breakdown.

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