Sierra tick and misfire: one invoice, two unanswered symptoms — P0307
The coil was changed and the persistent ticking noise is still present. Background: The tick and cylinder-specific misfire remain after warm-up. Stored code: P…
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GMC Sierra 5.3
2012 GMC Sierra 5.3: P0307 with a persistent ticking noise
The tick and cylinder-specific misfire remain after warm-up. (2012 GMC Sierra 5.3, about 176,600 miles. I want to understand the test before approving more par…