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Q:

there is a loud squeeling and chattering noise when I accelerate with the a/c on on 2002 Cadillac Escalade

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it doesn't make the noise with the a/c off,I have replaced the tensioner pulleys and and it seems to be in or around the compressor, do you know what is causing the noise
(2) Answers
(2) Comments
GM has a bulletin out about this issue. The cure is to replace the A/C compressor. The original compressor causes the belt tensioner to become damaged from the startup load on the belt.