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Old 05-05-2013, 08:04 AM   #7
rich3fan
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Drives: 2013 SIM 2SS/RS L99
Join Date: Apr 2013
Location: Wylie, Texas
Posts: 1,175
The L76 in my G8 GT also has the ticking sound at startup. As two_wheel_mayhem says, it's lifter tap. Disappointing that GM still hasn't addressed this but apparently not enough of an issue for them to be concerned.
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