[Z06] Washer / Nut Recall....
Mike

https://www.mygmlink.com
45118579 to 45127798. The nuts in question are on the lower control arm nut at the bottom right behind the behind the brake disk rotor.
on all 4 wheels. Before you go in make sure they have 4 nuts in stock . I keep copies of all recals, If you want I can scan a copy and try and post it. The nuts on my car were not cracked and at the time I had mine done I had 7500 miles on the car.
If there is wear in the ball joint/ steering knuckle they will be replaced and of course your looking at a longer repair time. At 2,900 miles mine were fine.
Just to restate what's already been said, only certain VIN 2004 Z06s are involved.
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Mike

Emmett
Last edited by Emmett; Oct 8, 2004 at 04:18 PM.
Was anything other than the nut/washers replaced, like a ball joint or steering knuckle? I can't imagine this procedure taking three hours to complete. It took just over an hour to complete on my car, but this did not include an alignment. Did you request an alignment or was this part of the recall fix? This recall procedure should not cause the alignment to go out of spec since no suspension parts need to be removed, unless some part other than the nut/washers was replaced. It's just replacing the nut/washer at each lower control arm position. There is no adjustment here, just torque to spec. Am I missing something? If you got the alignment for free as part of the recall procedure that's great. Whatever, sounds like the dealer did a thorough job.
Jim M
I saw a list of the affected cars by VIN number, but I can't find it. If memory serves me correctly the later production cars were the ones affected. If your car is part of the recall, I think you would have gotten the recall notification in the mail by now.
Jim M
Emmett
Was anything other than the nut/washers replaced, like a ball joint or steering knuckle? I can't imagine this procedure taking three hours to complete. It took just over an hour to complete on my car, but this did not include an alignment. Did you request an alignment or was this part of the recall fix? This recall procedure should not cause the alignment to go out of spec since no suspension parts need to be removed, unless some part other than the nut/washers was replaced. It's just replacing the nut/washer at each lower control arm position. There is no adjustment here, just torque to spec. Am I missing something? If you got the alignment for free as part of the recall procedure that's great. Whatever, sounds like the dealer did a thorough job.
Jim M
Gene

Call a dealer...give him your VIN # and he will tell ya for sure
5000 miles on mine...less than 1 hour to swap out the nut/washer. No signs of failure or wear on any parts.
The problem is they were nade of a lower grade/quality steel by a subcontractor than GM engineers specified.
GM reports three documented failures where the control arm has dropped and contacted a wheel cuasing the wheel to stop rotating very quickly
They report no accident or injuries in those three events....so far....


Call a dealer...give him your VIN # and he will tell ya for sure
5000 miles on mine...less than 1 hour to swap out the nut/washer. No signs of failure or wear on any parts.
The problem is they were nade of a lower grade/quality steel by a subcontractor than GM engineers specified.
GM reports three documented failures where the control arm has dropped and contacted a wheel cuasing the wheel to stop rotating very quickly
They report no accident or injuries in those three events....so far.... 
General Motors Corporation
Models: Cadillac CTS Year: 2004
Cadillac SRX Year: 2004
Cadillac XLR Year: 2004
Chevrolet Corvette Year: 2004
Number Potentially Involved: 41,928
Dates of Manufacture: January – April 2004
Defect: On certain passenger vehicles, the washers in the lower control arm ball stud nut/washer assemblies were made of the wrong material. The washers may fracture and become loose or fall away from the vehicle, reducing clamp load. Separation of the control arm ball stud and steering knuckle, due to disengagement of the tapered attachment and retaining nut, is possible. If the control arm separates from the knuckle, the affected corner of the vehicle will drop and the control arm would be forced downward, contacting the wheel. The affected wheel could tilt outward and create a dragging action that would tend to slow the vehicle and create a tendency for the vehicle to turn in the direction of the affected wheel. In extreme situations, the affected wheel assembly could separate from the vehicle. Separation of the wheel assembly would also sever that wheel’s hydraulic brake hose and result in diminished braking performance of the vehicle, which could result in a crash.
Remedy: Dealers will inspect the ball stud joints and measure the torque of the nut for all front lower control arms in all models affected as well as the rear lower control arms on the XLR and Corvette. If the torque is not at specification, the dealers will replace the ball stud, the knuckle, and the nut. If the torque is at specification, the dealers will replace the nut/washer assembly only. The manufacturer has reported that owner notification is expected to begin during August or September 2004. Owners may contact Cadillac at 1-866-982-2339 or Chevrolet at 1-800-630-2438. [NHTSA Recall No. 04V273/GM Recall No. 04043]













