Specifications

* This is a unique labor operation number for

bulletin use only. It will not be published in the

Labor Time Guide.

Reserved.

Document ID# 2048181

2005 Chevrolet Corvette

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Previous axle chatter TSB (thanks to member,

99ssconv):

Date: 4-16-2007

TSB: #07-04-20-002

Document ID# 1961528

Subject: Rear Axle Clunk and/or Chatter Type Noise

on Turns (Drain/Refill Rear Differential Fluid and

Add Specified Limited-Slip Axle Additive)

Models:

2004-2007 Cadillac XLR (Including V-Series and

Export)

2005-2007 Chevrolet Corvette (Including Z06 and

Export)

Condition:

Some customers may comment on a clunk and/or

chatter type noise from the re

ar of the vehicle while

making turns.

Cause:

This condition may be caused by slip/stick of the

posi-traction clutch plates due to insufficient

limited-slip axle additive. As plates slip and stick, a

jumping or jerking feel occurs accompanied by a

clunk noise.

Correction:

Important: DO NOT remove the differential cover

from the rear or the two sides. It is not necessary

to flush the old fluid from the differential.

Drain and refill the rear differential fluid using the

procedure listed below. Add the increased amount

of limited-slip axle additive specified below.

Raise and suitably support the vehicle.