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68gmsee · 05-22-2013, 07:16 PM

Could also be tires. One of my other vehicles has aggressive tread tires and they whine at certain speed and on certain pavements. Rear axle gear noise is a common problem with some trucks (mine included) and also tranny gears.

No sure way to identify it other than checking to see if the noise comes and goes when you let off the pedal. If it's tires the noise doesn not go away when you let off the pedal. If it's rear axle it will ease off. On the transmission, you can usually put in neutral to see if it stays or goes away.

Do some experimenting and see if the noise changes by doing the above. Maybe even go 60+ going downhill and let off the gas.

05-22-2013, 07:16 PM	#8
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Squealing at 60 mph Could also be tires. One of my other vehicles has aggressive tread tires and they whine at certain speed and on certain pavements. Rear axle gear noise is a common problem with some trucks (mine included) and also tranny gears. No sure way to identify it other than checking to see if the noise comes and goes when you let off the pedal. If it's tires the noise doesn not go away when you let off the pedal. If it's rear axle it will ease off. On the transmission, you can usually put in neutral to see if it stays or goes away. Do some experimenting and see if the noise changes by doing the above. Maybe even go 60+ going downhill and let off the gas. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...