It has the M88/3 engine and a Getrag 280 transmission. Hard to explain why, but there is a characteristic to those sounds that I don't get with this one. M635 Clutch Rattle / Transmission Bearing Noise. This is the 6th transmission in this car. Listen for noise with the transmission in gear and the clutch pedal to the floor. Noise from a bad wheel bearing can travel thru the chassis. If you pushed on the inner race when pressing it into the case you could have damaged the bearing. However, I can follow directions and turn wrenches! 30,000 does seem too soon for the main gear bearing to go out. When calling around for the service, I was asked if I wanted a drain and fill or a transmission fluid flush. These temperature changes affect the amount of pre-load on the transfer driven shaft bearings. Any noise from a vehicle is bad news. - Jon W., Aurora, US. There does seem to be alot of slack and noise coming from the transmission area where the CVs enter the case. The most common abnormal bearing noise concern with these units is related to a rotational whining noise in Forward or Reverse. If its an auto transmission then failing differential bearing sounds would be detectable the same way as above, although other shaft bearings may be harder to detect, its likely that a main dealer tech may have more experience in detecting the signs of transmission bearing failure as they're more likely to have heard/repaired them before, and will also know of any product recalls relating to bearing failure etc. What you think is from the rear may be caused by something up front. If your Chevy Blazer is making a high pitched noise or hum, it could be a sign of a bad wheel bearing. If clutch hub spins smoothly and has no wobble I'd guess main gear bearing. The advantage of the familiar is that we know how to take these units apart and have a general idea of power flow and overall operation–plus, we typically have plenty of extra pieces on the shelf should we need them. Ford/Mazda 4F27E/FN4A-EL Shifts from Second to Neutral, Chrysler/Dodge/Jeep 4XRE Transmissions No Movement, Top 10 Powertrain Product/Tool Winners for 2021, Video - Profile of Mike Riley, Transmission Guru, Video – Profile of Mike Riley, Transmission Guru. Took it back said it was the transmission bearings which were going to cost a 1 thousand to get fix. BTW, should I be able to see evidence of trashed main gear bearings in drained tranny fluid and on magnetic plug? I recently had both front wheel bearings replaced. Plus, we typically have plenty of extra pieces on the shelf should we need them. If your vehicle has run for long miles and hasn't received any inmate servicing, it's time to get a thorough look, as this could lead to bearing related problems soon. So, I'm back in the wind! However, this didn't solve the noise issue. If you have a clutch noise inside the bell housing, don’t waste your time. I have a 2008 rwd and a week a go a bearing noise started that sounded like a wheel bearing but the sound would not change if I turned right or left. I did just that, and you'll never guess what it was ...final drive belt roar! I changed both front wheel bearings and noise persists. Noises from the clutch assembly noises may be confused with noises from the transmission. You’ll need this for reference when the belt is reinstalled into the pulley assemblies, because putting the belt on backwards will damage it and the assemblies. Advertisement. If you hear a gurgling noise, particularly while shifting gears, it may mean that your fluid levels are low enough to cause damage to your transmission. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. 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