Knocking noise after replacing water pump

2003 CHEVROLET TRAILBLAZER
128,000 MILES • 6 CYL • 2WD • AUTOMATIC
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RG2003
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Replaced water pump on my vehicle. Everything went well but prior to replacing fan and shroud, I turned on the truck to check for leaks. Now I hear a knocking noise coming from the left side near the steering pump. I checked the tension pulley and everything seems tight.
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Jan 12, 2019 at 5:42 PM
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ASEMASTER6371
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Good evening,

Remove the belt and see if the noise is still there.

Lets see if it is related to a belt driven component or it is internal in the motor.

Roy
Jan 12, 2019 at 6:06 PM
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RG2003
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Okay, its late here so I'll give that a try tomorrow and let you know. Thanks
Jan 12, 2019 at 6:31 PM
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ASEMASTER6371
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You are welcome.

Always glad to help.

Roy
Jan 12, 2019 at 6:42 PM
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RG2003
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Okay, the next morning I turned on the truck and the knocking was gone. I have been driving it for a day or two and the sound hasn't returned. All fluids are full so I'm not sure why the sound is gone, so I guess I'll consider this case closed. Thanks for your input.
Jan 14, 2019 at 7:26 PM
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ASEMASTER6371
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If you did not find anything, it cannot fix itself.

I would plan on it returning at some point. Keep a close ear on it for the noise.

Roy
Jan 14, 2019 at 7:53 PM