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Sounds After Knock Sensor Repair


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Just picked the truck up from the dealership. I had to get both knock sensors replaced because of corrosion. Thankfully still under warranty it was a $648 repair. I noticed on the way home in the higher rpm range I am hearing a whining sound almost like a vacuum but only in the higher rpm range when getting into the throttle. Anybody have this after the repair? I plan on calling the dealership first thing in the morning.

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