Sorry to hear you’re experiencing this issue! There are a few reasons why your GMC Sierra might be making a ticking noise while accelerating, but the most common include:
Out of these three, the GMC Sierra is infamous for the latter, but to know for sure you’ll need to have a licensed mechanic diagnose the issue for you, preferably as soon as possible. If the ticking noise is caused by a bad lifter, it can spell disaster if left to worsen, resulting in very expensive repairs.
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