Drone Noise From Engine Area (Repalce Accessory Drive Belt)
| 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).
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 different 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
Part Number | Description | Qty |
|---|---|---|
12575450 | Belt, Accessory Drive | 1 |
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J0667 | Belt, Drive - Replace | Use Published Labor Time |
