1993 Sierra 5.7 K1500 auto rattle/vibration noise FIXED!

[Chevy-SS]

You guys aren’t going to believe what ended up being the noise I was hearing! Out of desperation I set my phone to record and set it down on the floorboard while I got under the truck while it was running and tried to feel around again for what might be the issue. Got back out and checked the video and couldn’t believe I was able to get the noise to go away. It ended up being the fuel lines were vibrating against the floorboard causing the noise. Chevy-SS was absolutely right about it being something I touched during cam swap. I’m not sure how they got into a position to contact the floors but I put a piece of weatherstripping between the lines and the floor and noise is gone! Thanks guys for the help!

Woohoo.... Occam's Razor works again!!!!!!!!!!!!!!

Glad you figured it out and thank you for posting the solution!

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