Accessory Drive Belt - Droning Noise

File In Section: 06 - Engine/Propulsion System

Bulletin No.: 02-06-01-001A

Date: March, 2002

TECHNICAL

Subject:
Drone Noise From Engine Area
(Replace Accessory Drive Belt)

Models:

1999-2002 Chevrolet Cavalier
1999-2002 Pontiac Sunfire
with 2.2L engine (VIN 4 - RPO LN2)

This bulletin is being revised to add additional model years. Please discard Corporate Bulletin Number 02-06-01-001 (Section 06-Engine/Propulsion System).

Condition

Some owners may comment on a drone noise coming from the engine area. Condition is most noticeable at idle speed with air conditioning ON and high ambient temperatures.

Cause

The condition may be due to the accessory belt going into a natural resonance between the A/C compressor and the generator at approximately 950 RPM.

Correction

Replace the accessory belt with the belt listed below. This new belt is made of a diflerent material with a higher natural frequency.

Refer to the Drive Belt Replacement Procedure in the Engine Mechanical - 2.2L sub-section of the appropriate Service Manual.





Parts Information

Parts are currently available from GMSPO.

Warranty Information





For vehicles repaired under warranty, use the table.





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