Operation CHARM: Car repair manuals for everyone.

A/C - Moan/Whine Noise Under Heavy Load

TECHNICAL

Bulletin No.: 09-01-38-002

Date: May 14, 2009

Subject: A/C Moan and/or Whine Noise Under Heavy Load Condition (Replace A/C Suction Hose With Updated Design)

Models:
2009 Chevrolet Colorado
2009 GMC Canyon
2009 HUMMER H3 , H3T, H3G Export
All Equipped with Engine RPO LH8

Condition

Some customers may comment on a moan and/or a whine type noise when the A/C compressor is engaged during high system loads. These high load operating conditions include high ambient temperatures, extended periods of idle operation and towing applications. The noise will stop immediately when the compressor is disengaged.

Cause

This condition may be caused by the factory installed A/C suction hose lacking sufficient noise dampening.

Correction

Install a new A/C suction hose assembly. This new hose assembly has an improved noise dampening design. Refer to Suction Hose Replacement (LH8) in SI.





Parts Information

Warranty Information





For vehicles repaired under warranty, use the table above.





Disclaimer