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This only happens after car sits for a long period of time (like 8 hours or so), lasts only a few seconds then sounds normal. I can shut it off and restart it after a minute of idling and there is no noise. The noise is prominent on the upper right side of the engine, as you are standing in front of the vehicle. It is not throwing any codes related to the engine. Only transmission fluid pressure switch codes.
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Hello, I believe the transmission fluid pressure is likely the cause of your chatter. With low pressure comes metal on metal contact, and the transmission front pump is spinning any time the engine is spinning. Have it towed to prevent further damage, and I'll leave a link to certified shops in your area. http://repairpal.com/chevrolet-within-10-miles-of-goldsboro-north-carolina-27534
Hi Casey, It's a V6... Sorry it has taken me so long to get back with you. Life jumps to light speed sometimes. BTW, just changed the oil and replaced the filter with Chev approved AC Delco. Shouldn't be any drainback of oil issues, and the oil is full synth 5w-30. Hope that helps.
Thanks for responding Casey. I forgot to mention that the transmission codes were old codes retrieved from code history from the past and isn't a problem anymore. Since posting this problem, I've discovered that it may well be the Camshaft Position Actuator. It's a solenoid that has a protective screen to help prevent clogging. But if the small flow reservoirs do get clogged by sludge over time, they will not work properly, but the electronics part will still send a good signal allowing the engine to start. I don't have a clue as to whether it's the intake or exhaust side causing the problem. Also, if it's bank1 or bank2... What are your thoughts?
No problem, yes that can happen, and does often. I'm not 'read up' on the traverse, but I assume it has an ecotech 4 cylinder, or is it a V6? Let me know what engine you have, and I will look at the diagrams for variable valve timing components, and let you know what part of that design can make a chatter in the first place. Normally, when those get clogged up, the chatter will not last longer than 3-10 seconds. In the CRV, it sounds like baseball cards in bicycle spokes, and in a Mercedes Benz it sounds like rod knock. In both cases, once oil flows, it goes away. The reason it comes back after the vehicle sits for a while is oil pressure bleeding, which can indicate that a seal, electrical component, or mechanical component has failed.