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2007
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Sierra Classic 1500 2WD V8-4.8L
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A/C - Whistling Noise/Blower Motor Stalls or Vibrates
A/C - Whistling Noise/Blower Motor Stalls or Vibrates
This TSB number 06-01-39-011, dated 10/03/06 has been superceded by TSB number 06-01-39-011A , dated 03/22/07