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Another common problem with the LT5 seems to be the chain tensioner rattles upon start up. There is a replacement right side tensioner kit available which will reduce this but in some cases, the noise does not completely disappear. As a note, we recently had the occasion to remove the oil pan on a 50,000 mile vehicle that had an excessive tensioner rattle. Just being thorough, we removed the oil pan baffle in order to thoroughly clean it as long as it was off. We were greeted by an unpleasant surprise. Completely unseen with the baffle in place, was a huge pile of cam chain wear plate material. This is the hard plastic used on several chain guides to reduce noise and metal fatigue on the chains. Two of these guides were completely shattered.

WWe strongly recommend replacing any excessively loud chain tensioners before any other problems occur. The plenum must be removed to replace the left unit and the right is accessible from the right front wheel well.

 

Suggestion:


When or if your engine's oil pan is removed for any reason, ask that the baffle unit be removed and the pan inspected. Any debris found in the pan can be an indicator of your engine's health.

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