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Old 05-18-2022, 07:40 PM   #177
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Originally Posted by Project510 View Post
it still rattles exactly at 3500 rpm in 1st through 3rd, and highway speeds in 4th and 5th its between 3500-4000 say around 3700 ish. It sounds like its right under the center of the dash. Any ides on where to check I will gladly take.
Crawl under the truck and see if you can wiggle the heat shield on the catalytic converter. That's my first guess.

If not, check the heat shield for the exhaust manifold.
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