Question about 1999 GMC Sonoma
I have a 2003 Chevy Avalanche and I can hear a high pitched sound coming from underneath the vehicle while idling. I have the 4x4 2hi button selected at the time, but when I select the 4hi button, the high pitch sound changes pitch for a split second but then returns to the original high pitch sound. The vehicles runs great with 74K miles and I rarely use the 4x4 mode. Why the sound?
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Posted on Jan 02, 2017
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