Question about 1999 Chevrolet Silverado 1500
Hi, I had that problem with my 01 gmc. heater core was partially blocked, so when you accelerate the water flows faster through the core. I flushed my core out with viniger and my heat was better and the sound went away, but I had to change the core about two years later because it started to leak.
Posted on Aug 25, 2010
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Posted on Jan 02, 2017
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