5.3L Intake Swirl Flaps
October 8th, 2014 | 12:22 PM
#12
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Joined: Apr 2008
Posts: 7,573
Likes: 45
From: Austin, Texas
Without knowing what the cause of the sound is its hard to say that a heavier oil would alliterative it... I would avoid deviating from the 5w-30... some engine noise is to be expected and don't rule out the transmission ( I know that's not what you want to hear, no pun intended) as the transmission can produce its share of noises.
If you can post a video or sound clip...
If you can post a video or sound clip...
October 9th, 2014 | 8:26 PM
#13
Thread Starter
CF Junior Member
Joined: Dec 2013
Posts: 33
Likes: 0
From: Florida
GM Service Manager recommended trying 10w30 oil. Just had the 4L60E Trans rebuilt last month, after the current noise started.
I have attached a video of a guy's 5.7L that has the same exact engine noise as my Suburban. Only makes the noise after it warms up. Thanks
Last edited by penzfan; October 9th, 2014 at 8:41 PM.
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