A/C - Underhood Growling/Rattling Noise
Bulletin No.: 03-01-38-012ADate: March 02, 2004
TECHNICAL
Subject:
Underhood Rattle Or Growl Noise With A/C On (Reposition A/C System Component to Eliminate Ground Out)
Models:
2003-2004 Chevrolet Cavalier
2003-2004 Pontiac Sunfire
with 2.2L Engine (VIN F - RPO L61)
Supercede:
This bulletin is being revised to add 2004 model year. Please discard Corporate Bulletin Number 03-01-38-012 (Section 01 - HVAC).
Condition
Some customers may comment on an underhood rattle or growl noise with the air conditioning (A/C) on.
Cause
The A/C system components may be grounding out at various locations underhood.
Correction
Reposition the A/C system components identified in each of the corrections described below:
Correction 1
The A/C liquid line may be in contact with the cooling system purge tank. Reposition the liquid line away from the cooling system purge tank. Refer to the arrow in the illustration above for the location of the ground out.
Correction 2
The accumulator mounting bracket bolt may contact the right strut tower sheet metal. Add another washer under the head of the accumulator mounting bracket bolt. This will provide extra clearance between the tip of the bolt and the strut tower. Refer to the arrow in the illustration above for the location of the ground out.
Correction 3
The accumulator may contact the bottom of the PCM (Powertrain Control Module). Loosen the accumulator mounting bracket bolt and push the accumulator down and then retighten the mounting bracket bolt. This will increase the clearance between the PCM bracket and the accumulator. Refer to the arrow in the illustration above for the location of the ground out.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer