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when your brakes are low it squeals this is a grinding noise coming from my out puts on my front diffwhen your brakes are low it squeals this is a grinding noise coming from my out puts on my front diff
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Can be many things. Check the cv joints first- will make sharp clicking noise especially when turning. Wheel bearing but it will be all the time and noise will increase with speed. Control arm bushes - shudder and noise when accelerating or when driving on road with an slight incline (up hill). If nothing obvious found take the car to an suspension specialist for evaluation and quote.
get it inspected, noise many times means big trouble.
are the lug nuts loose?
bad u-joint (hand checked)
or road hazard damage (hit)
? look first. see whats there,
Your front pump in the transmission could be going bad. Check the transmission fluid for level and condition. The fluid should be bright red and not burnt (dark in color like burgandy). Best thing to do is take it to a transmission shop and have them check your truck for DTC codes with a Tech 2 scanner and have them do a transmission line pressure test. The whining can also indicate low on transmission fluid and that's bad, you may have burnt some of the clutch packs already and shorten the life of your transmission. Good luck and keep me posted, be glad to help.
Make sure the shocks are reattached at both ends; also if it has coil springs vs torsion bars, they may be twisting upon spring movement. if not sure, you can squirt some oil on the bottom of the coil springs to test. if the popping stops then the springs may need repositioning (twisting to the proper spots) or get an after market pad to place underneath the spring where it contacts the lower "a"frame. good luck
The Denali's are really susceptible to front dif. wear and failure. Because it is AWD, the front dif is always working unlike a 4WD. GM, in order to lighten up the front end built the front dif in aluminum. If it was the same as the rear, it would be bullet proof, but much heavier. After about 80,000 miles it is common to have bearings failing. Remove the drain plug which happens to be magnetic. You may see more than just the normal fine filings. You will likely see larger chunks of metal some of which is not even magnetic but will drain out with the oil. You are likely looking at a $1500 rebuild. It will get much louder and run for a long time before it really goes south.
when your brakes are low it squeals this is a grinding noise coming from my out puts on my front diff
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