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How to Replace the Serpentine Belt in a Chevy Impala

by Contributor

The main drive belt or serpentine belt is an important part of all vehicles. The main drive belt is what runs many of your accessories. For the Chevy Impala sedan, there is one serpentine belt driving the alternator, power steering, water pump, and air conditioner. Model year and engine size can affect the serpentine belt installation on this vehicle.

Find the belt tensioner pulley and bolt. The belt tensioner is accessible on the Impala, between the engine and the coolant tank.

Rotate the tensioner with your wrench to release tension on the belt. For 3.1L, 3.4L and 3.8L models, you'll rotate the tensioner counter-clockwise. For a 3.4DOHC engine, it should be rotated clockwise.

Remove the old serpentine belt and compare it to the new one. The old belt should be slightly longer due to wear.

Use the routing diagram for the Impala to put the new serpentine belt around all of the pulleys. If you can't find the routing decal on the engine, or it's unreadable, use the Dayco belt accessory site to find a routing diagram for the belt.

Slip the new serpentine belt onto all pulleys. Rotate the tensioner again to allow the belt to be fully installed, then release to regain tension on the belt. Make sure the belt is well seated on all pulleys.

Run the engine and observe to see if the belt is properly installed.

Tip

  • The manufacturer suggests checking the drive belt on the Impala every 6,000 miles or 6 months.

Warning

  • This guide relates to the year model range for 1995-2003. Check specifics if your vehicle is outside of this range, as the manufacturer may change aspects of drive belt installation.

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