Heres the TSB you mentioned for non-ZL1's
Service Information
2012 Chevrolet Camaro |
Camaro VIN F Service Manual | Document ID: 2740658
#PI0137C: Rear Axle Chatter Type Noise on Low Speed Turns (Excluding ZL1) - (May 11, 2012)
Subject:Rear Axle Chatter Type Noise on Low Speed Turns (Excluding ZL1)Models:2010-2012 Chevrolet Camaro (Excluding ZL1)
Equipped with Limited-Slip Differential (RPO G80)
Attention:For 2010 and 2011 vehicles built prior to August 25, 2010, if the chatter noise you are experiencing occurs only in Reverse while making a turn, please review the latest version of PIC5424.
This PI is being revised to add an Attention statement and update the Recommendation/Instructions. Please discard PI0137B.The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may comment on a chatter-type noise from the rear of the vehicle while making low speed turns.
This condition may be caused by a slip/stick of the posi-traction clutch plates. As the plates slip and stick, a jumping or jerking feel occurs, accompanied by a chatter noise.
Recommendation/Instructions
Caution: The rear axle seals must be replaced. The original seals are not compatible with the new fluid.
Replace both rear axle shaft seals with GM P/N 22798805 and drain/refill the rear differential with new fluid, GM P/N 88862624 (in Canada, use P/N 88862625). Refer to the Rear Axle Shaft Seal and Differential Oil Replacement procedures in SI. This fluid includes a limited-slip additive (friction modifier) already added. DO NOT add any limited-slip additive (friction modifier).
Important: Please advise the customer that once the differential fluid has been changed, it may take as long as 805 km (500 miles) for the lubricant to fully penetrate the limited slip clutch plates. During this period some chatter may still be felt on initial startup while making slow turns until the rear differential fluid warms up.
Note: DO NOT re-use the wheel drive shaft nut. Replace with NEW only.
Parts Information
Part Number
Description
Qty
22798805
Seal, Rear Axle Shaft
2
11611687
Nut, Rear Wheel Drive Shaft
2
88862624 (US -1 qt)
88862625 (Canada -1 L)
Fluid, Manual Transmission (Dexron LS Gear Oil 75W-90 MTF)
1
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
F9739*
Replace Both Rear Axle Shaft Seals and Drain/Refill Rear Axle Fluid
3.1 hrs
*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
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.
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