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Discussion Starter · #1 ·
Recently the truck started making a high pitched ringing noise when in Park or Drive but it goes away when I apply the gas. Right now it's intermittent but is happening more frequently. Everything else seems fine. Any ideas?
Thanks
Denver
 

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Discussion Starter · #3 ·
Thanks. Just got it back from the dealer. It was the serpentine belt tensioner. They said the belt itself was fine but I had them replace it anyway because the truck has 158,000 miles on it and I don't want to have to pay them to take apart the front of the engine all over again when it wears out.
 
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