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2005 EQUINOX AWD HAS A BAD SHAKE VIBRATION WOBLE IN IT WHEN ACCELERATING BETWEEN 35 AND 55 MPH GOES AWAY WHEN YOU LET OFF GAS, TOOK REAR DRIVE SHAFT OUT AND DROVE IT, STILL HAD SHAKE/WOBLE/VIBRATION
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There is no "cheking"to be done other than what you have done already.The movement,ANY movement,only means the universal joint is shot and needs replaced.I'm sure you've noticed a steady vibration.It's coming from bad U-joint.Replace it.
this is probably a bad u-joint(s) crawl under the truck engine off and in park and on a flat spot, twist the drive shaft if it clunks at all or has some up down or left right slop the joints are shot and will need replacing. And yes the u-joints will cause a drive line vibration that seems like a transmission issue it goes away with speed as the shaft will spin fast enough the vibration will become only a hum.
vibrations can come from all manner of things, wheel imbalance thrown a weight or flat spot on tyre or damaged wall, suspension mounts, engine+gearbox mounts, anti roll bar mounts, wishbones lower mounts, drop links, steering rack and idlers, there can be others that you would not think can do this and these are clutch thrust bearing or plate spring. rear wheel drive prop shaft mounts, exhaust and mounts, automatics can be the torque converter out of balance. also can be worn bearings on the wheels. you would need to find were the location of the vibration starts and pin down its area this can help with another pair of ears in the vehicle.
Rev the engine while out of gear , if vibration check units driven by fan belts. if no vibration and is front wheel drive, check joints on both drive shafts, if rear wheel drive check front and rear tail shaft u / joints, check wheel balance or out of round tyre .
u need to check rear end with the drive shaft removed vibration goes away would lead me to believe you have bad bearings in the rear end more than likely the pinion bearing pull cover off (while fluid draining check to see if there a lot of metal in oil ) if you do see metal in fluid or laying in rear end you need rear end rebuilt or replaced i wouldn't recommend doing the rebuild your self because with out the special tools and knowleage u can make matters worse
It sounds like a bad U-joint to me. The only way to properly check u-joints is by removing the driveshaft. The joint should move freely, any binding will cause the vibration.
THIS MAY SOUND STRANGE BUT DO YOU FEEL ANY VIBRATION IN THE SEAT WHEN YOU HEAR THE HUMMING IF SO I WOULD SUSPECT THE U/JOINTS IN YOUR DRIVE SHAFT ARE GOING BAD
had the same problem it was the u joints....if you get a vibration at higher speeds that will also be an indicater...on the 2005 exterras you have to replace the whole drive cshaft fortunatly min was under drive train warranty.
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