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Reply To: 2021 GMC Sierra AT4 6.2 Valve Spring Breakage

December 12, 2020 at 6:41 am #631316
YetiOn
Participant

Wow. Had ours break around 150 miles. Dealership was able to replace in a day. Amazed they are still ongoing. Hoping you get it back soon. I’ll say that after getting it back, nothing sounds out of place. In our case, no damage to pistons and other components. Good luck.

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