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Whine Noise From Rear Axle

B

Bobbll

GUEST
I hope this info helps someone. I had the noise on my 03 2wd. This took care of it.
 
Sorry about that. Don't know where the attachment went. Back soon.
 
OK call me a dumbarse but I can't find the method of adding an attachment that used to be here. ?Here is the info copied and pasted from GM SI.

Document ID # 1234118
2003 Chevrolet Avalanche - 2WD ?

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Whine Noise From Rear Axle (Diangose and Replace Rear Shaft With A Tuned Torsional Damper Rear Propeller Shaft) #03-04-17-001 - (01/30/2003)
Whine Noise From Rear Axle (Diagnose and Replace Rear Shaft With A Tuned Torsional Damper Rear Propeller Shaft)
2002-2003 Cadillac Escalade EXT

2000-2003 Chevrolet Suburban

2002-2003 Chevrolet Avalanche

2000-2003 GMC Yukon XL, Yukon XL Denali

Condition
Some customers may comment on a slight axle whine heard only at certain speeds, typically between 72-96 km/h (45-60 ?mph).

Cause
"Inherent" ring and pinion gear whine.

All gear driven units, such as automotive rear axles, produce some level of noise that cannot be eliminated with conventional adjustments and repairs. "Inherent" axle noise can be described as a slight noise heard only at a certain speed (typically between 72-96 km/h (45-60 mph) on most General Motors? trucks). The presence of this noise is not indicative of a functional concern with the axle assembly. However, some customers may find that this "inherent" axle noise is unacceptable.

Correction
Replace the rear propeller shaft with a tuned torsional damper shaft ONLY after diagnosis concludes that it is an "inherent" rear axle noise and no physical damage or incorrect adjustment exists.


Important
If the noise is not correctly diagnosed as "inherent" and having a peak in the narrow speed range of 72-96 km/h (45-60 mph), the addition of a tuned torsional damper propeller shaft can aggravate the perceptible noise level. It is extremely important to first diagnose the rear axle noise as "inherent" before installing a new tuned torsional damper propeller shaft.


Diagnostic Information and Procedure for Rear Axle Noise
Diagnostic Starting Point - Rear Drive Axle. Refer to SI Document ID #696972.
Symptoms - Rear Drive Axle. Refer to SI Document ID #697220.
Rear Drive Axle Noises. Refer to SI Document ID #700580.
Noisy in Drive. Refer to SI Document ID #698120.
Rear Propeller Shaft Replacement
Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. Refer to SI Document ID #737171.
Remove the bolts and the yoke retainers from the rear axle pinion yoke.

Notice
When removing the propeller shaft, do not attempt to remove the shaft by pounding on the yoke ears or using a tool between the yoke and the universal joint. If the propeller shaft is removed by using such means, the injection joints may fracture and lead to premature failure of the joint.


Slide the propeller shaft forward in order to disconnect the propeller shaft from the rear axle pinion yoke.
Slide the propeller shaft rearward in order to disconnect the propeller shaft from the transmission or transfer case.
Remove the propeller shaft from the vehicle and discard.
Install the new tuned torsional damper propeller shaft (see Parts Information below) into the transmission or transfer case.
Install the propeller shaft to the rear axle pinion yoke.
Install the yoke retainers and bolts. Tighten
Tighten the yoke retainer bolts to 25 N?m (19 lb ft).

Lower the vehicle.
Road test the vehicle.
Parts Information

Important
Only small quantities of parts are available. Please DO NOT order for stock only.


Part Number
Description

15075236
Rear Prop Shaft with Tuned Torsion Damper (2WD Suburban, Avalanche, Yukon XL)

15767178
Rear Prop Shaft with Tuned Torsion Damper (4WD Suburban, Avalanche, Yukon XL and 2003 only AWD Yukon XL Denali, Escalade EXT, with NR3 Transfer Case)

15064596
Rear Prop Shaft with Tuned Torsion Damper (2001 and 2002 only AWD Yukon XL Denali, Escalade EXT with NP3 Transfer Case)


Parts are expected to be available from GMSPO on February 17, 2003.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

F1280
Propeller Shaft Assembly (Rear) - Replace
Use published labor operation time

Add A
Diagnosis Time
0.0-0.3 hr




GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. ?WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

? Copyright General Motors Corporation. All Rights Reserved.


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?Document ID # 1234118
2003 Chevrolet Avalanche - 2WD
 
(y)Hey Thanks for the info. Have been trying to help a friends father out that has this whine that starts at 45 and stops at about 55. Printed out and will pass onto him so he can educate the service manager and tech.
Hopefully they will be aware of it, but if not this will save them some time looking for the info
Great post.
zeeya
 
See, I knew there was a reason I've been procrastinating with getting my whine checked out... (y)

A new driveshaft sounds good... not as good as a new diff like others got... but better than a "that's normal" boot to the behind.
 
marc_w said:
See, I knew there was a reason I've been procrastinating with getting my whine checked out... ?(y)

A new driveshaft sounds good... not as good as a new diff like others got... but better than a "that's normal" ?boot to the behind.

I hate to say it but this letter came out after TWO ring gear and pinion sets had been put in mine. The rear was still noisey. The drive shaft along with an ENTIRE rear end swap took care of the noise.

Just to make sure, I drove a new Z66. It makes a little more noise than mine.

The dealership had a competent tech doing doing the work. Pinion depth and backlash were set properly and the contact pattern looked like it should have. New for 03 is a "triple cut" gear set and "Canadian bearings" in the rear ends (I'm told.)

Looks like GM took a perfectly good, proven system and made it more trouble prone.
 
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