There’s a few possible causes for a chirp: pulley misalignment, improper installation, extremely worn belt ribs, worn pulley bearings or contamination. We suggest the following solutions:

• Check alignment of all pulleys, either with a straight edge or a laser alignment tool.
• Ensure all accessory pulleys and brackets are tightened snug to mounting surfaces.
• Inspect and replace all accessories/pulleys that are difficult to rotate (i.e. rough/seized bearings) or show excessive wobble/free rock.
• Double check the power steering pulley and harmonic balancer, as they are often a common cause for misalignment.