Colorado 2WD V8-5.3L (2009)
Hose/Line HVAC: Customer Interest
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.
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