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What is your question?
Under the head
What makes this problem better or worse?
No
How long has your 2009 GMC Sierra 1500 had this problem?
More than a week
1 Reply
Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. I'm not seeing a question here. What is it you'd like to know? What can you share about your reduced engine power issue?