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My 2000 chevy blazer has a loud knocking noise is started after I truned on my ac all b3for that it was cool. I just buy the truck and everyone keeps saying that its something bad

What do I do or what can I do

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  • AC Master
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Did it go away when you turned the A/C off? If not, check the tensioner and pulley, also check the other pulleys. Check the water pump and power steering pump. No looseness in any of they. The tensioner could be bad. If it went off, then it is the A/c compressor.

Posted on Apr 14, 2015

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