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Hello. Just so you know, i am new to these forums.

anyhow, I have a 2006 sierra with 5.3 vortec. Love spinning tires and such, which sadly has led me to have to put a new transmission in. Considering i am 17 years old, with what i think is a decent amount of experience with mechanics throughout my life, i tackled the job myself in my dads garage. The was Tranny put in good, shifts correctly and everything proper temperature, oil level and all. passed inspection for warranty,


but...heres the issue... at idle it makes a ticking sound. The sound seems to be in sync with the RPM - as i rev the engine the ticking accelerates. I pulled the starter and double checked the torque converter bolts, they are tight as possible.

I am stumped. WTF is the issue here? could it be the plastics on the sides of the transmission somehow (plastic around starter and by oil filter) ? Any advice would be great! thanks!

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i pulled the plastic cover near the oil filter - not the problem

pulled starter and plastic around it, (torqued)/tightened torque coverer bolts, reinstalled starter - not the problem


ran engine and watched flex plate spin, noticed it wasn't true, had a tiny wobble. sound seems to be coming from there. I am guessing the flex plate might be cracked, which sadly is a big job.

Has anyone every experienced this before to any relation? Maybe something in the engine block?

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