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Old 08-25-2017, 11:00 AM   #1
Marty McFlew
Drives: 17 SuperSport Camaro 6 on the Flo'
Join Date: Feb 2016
Location: USA
Posts: 1,508
Poll: Who has had this axle failure?

Who has had the this Axle failure?

#16-NA-399: Information on Replacing Half Shaft Fasteners with Revised Parts - (Dec 19, 2016)

Subject:Information on Replacing Half Shaft Fasteners with Revised Parts
CadillacATS-V20162017LF3, LF4, LT1, LT4CTS-V20152017ChevroletCamaro20162017

Involved Region or CountryNorth America and N.A. Export RegionsConditionThe technician may need to perform a repair that requires the half shaft bolts to be removed.

This bulletin advises the Service Technician of new longer bolts and lock washers required to be installed during any repair that requires the half shaft bolts to be removed or replaced.
  • Three retainer assemblies required per half-shaft.
    • Each retainer (3) requires 2 bolts (1) and 2 washers (2) to make a retainer assembly.
    • Where applicable, each axle assembly uses 3 retainer assemblies per side.
    • Each repair kit contains 6 bolts and 6 washers. 1 kit for each half shaft.
    • Replacement of all axle bolts are required during repair.

If half-shaft has been separated from the differential:
  • Remove and discard only the half shaft bolts.
  • If required, clean and reuse retainers.
  • Replace the shorter bolts (1) with a new longer bolt (2) and washer.
  • Install the lock washers onto the bolts.
  • Install bolt and washer assembly into retainer.
    • Torque bolts to proper torque specifications. Refer to Fastener Specifications in SI.
Service stock half shafts may include POA bolt/retainer assemblies. These assemblies may require rework with longer fasteners.
  • The new half shaft bolts must be removed, measured and discarded if the length is incorrect.
Parts Information[COLOR=brown !important]Note: To obtain the bolts and washers, fax the form included in this bulletin to the GM Warranty Parts Center (WPC). Request WPC #816.

Use the Vehicle Identification Number (VIN), SI, and the GM Electronic Parts Catalog to determine the proper part numbers for the half shaft, if replacement is required:

Bolt/WasherWPC #8161 kit (6 bolts/6 washers)
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Old 08-25-2017, 11:20 AM   #2
mcintyre1969's Avatar
Drives: 1968 SS/RS, 2006 H2 2016 2SS White
Join Date: Sep 2015
Location: Texas ( Southern Moron)
Posts: 681
Not yet
2016 2SS White fully loaded
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Old 08-25-2017, 04:11 PM   #3

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Drives: 16 Camaro SS, 15 Colorado
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Location: Jefferson City, Missouri
Posts: 13,515
Saw this in another thread...still need to check my bolts. No failure though.
2016 Camaro 1SS - 8-speed - NPP - Black bowties
2010 Camaro 1LT V6 (Sold. I will miss her!)
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Old 08-25-2017, 09:29 PM   #4
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Drives: 16 2SS
Join Date: Jan 2016
Location: Ft Knox, ky
Posts: 199
Sadly... lol. As was seen from my thread... got the car back today, everything appears fine except they returned the car insanely dirty... kinda pissed how dirty it was, but whatever. I'll be a able to detail it up and just glad I can finally drive it. Car broke on 8/15 and was returned today 8/25.
2/3/16 Ordered #TFKDC9
3/23/16 Took delivery!
Hyper Blue 2SS, Jet black int, NPP, MRC, 6MT, 56V rims, NAV, Sunroof, Black Bow ties, painted engine cover, black tail lights and side markers, Lime green calipers, custom painted SS badges, Stillen body kit, Borla ATAK and Cat delete Xpipe
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Old 08-26-2017, 09:16 AM   #5
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Drives: 2016 2SS, Red Hot, NPP, Nav, M6
Join Date: Jul 2016
Location: Eagle Creek OR
Posts: 749
No failure here
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