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Showing results for tags 'knocking'.
Found 4 results
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Hey I have 120k miles trucks torque converter has been progressively gotten worse with the shuttering. I believe it’s time for a rebuild. I now have heard a knocking/tapping sound that is so light and high pitch I can’t hear it on video. I changed my oil about 100 miles ago and since have heard this sound coming from the oil pan/bell housing area also heard lightly infront of the truck. Does it at idle and in neutral. Not sure if it does it in drive or under load the sound is not sequential with the engines rotation. Could this be my converter? I’ve heard lifter failure and lifter knocking in my previous 5.3 trucks and it’s not like that at all. More out of time and random. If in park and I give it a little throttle the sound gets a little louder but still not in sequence with the engine. Almost a light popping sound more than a knock. Any help would be great before I spend the money on a trans and then have to turn around and rebuild the engine. -
I just bought a pre-owned 2015 Yukon Denali and I Love it! I've been waiting for the feel of a big V8 engine with 4 wheel drive so this girl can dirty on any road.. It's beautiful and I'm SO happy to own a sexy Denali. I've only had it for two weeks so I'm learning every thing about it with each drive. So far the engine purrs and all gauges read level. It's got 98k mi on it so I'm expecting it to have some wear and tear. So just yesterday morning I pulled away from a stop sign and gave a good rev got up to 50mph in a few sec... and as I approached a slow zone I took my foot off the gas.. lowered speed to about 25 then gave it a little more gas while going up a slight hill in the road and I hear what sounded like a knocking noise. I took my foot off the gas and the sound went away. So on the drive home where I have to ascend up to about 2200 ft elevation it did it again as I was coasting and had to accelerate from 25 to around 30 mph I kept my foot on the gas this time (engine sounding smooth as silk) and continued uphill about 45mph and the sound went away. It's always a short knocking/rattling sound. Not in the engine but below me, definitely upfront. I've got an appt at GMC next week but until then I'd love to figure it out. Not sure what other details you need but any one got any idea? Thanks everyone! -Dia -
About 1 year ago I replaced the engine in my 1989 suburban v2500 with a 5.7L tbi engine in it, I used another chevy 350 from summit racing and used most of the old Accesory drive then, about 6 months after I completed the build it noticed a loud rattling noise that sounded like detonation to me but only under low speed acceleration and it would stop when I let my foot off the gas, so I began troubleshooting the issue. I replaced the egr valve, put colder spark plugs in it, replaced the knock sensor, tried high octane fuel, retarded the timing adjusted the valve lash and now I am lost, the noise only gets worse the more I drive it. Any Ideas? -
I have an 06 Silverado with 215k miles. Has the L33 Aluminum Block 5.3 in it. It runs great, has good power, but has an odd ticking/knocking noise. It doesn’t make the noise until it’s been running for about a minute so I don’t think it’s exhaust. I also do not think it’s a lifter because it sounds more lower end towards the rear of the engine. Has anyone had any experience with these L33s knocking? It has been making this noise for a while now and it’s very annoying/embarrassing. I’m not sure if oil has anything to do with it but I use penzoil 5w30 full syn. Let me know if you have any ideas, thanks.
