HUMMER H2 STEERING KNUCKLE FAILURES

Suspension:Front:Control Arm:Lower Ball Joint

Summary

ODI upgraded this investigation at the conclusion of PE04-080.the alleged defect involves the failure of the steering knuckle at the lower ball joint boss, resulting in a separation of the lower ball joint from the knuckle.a lower ball joint separation could result in a loss of steering and/or a disabled vehicle. It appears that the fractures of H2 steering knuckles can be attributed to wheel/tire collision forces being transferred directly to the steering knuckle.the original knuckle design appears to be sufficient for the H2 application.evidence from inspected vehicles, photographs, police reports and edr data indicates collision impact events placed stress on the steering knuckle causing it to fracture.further use of Agency resources does not appear to be warranted.the closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists with regard to the subject component.the Agency reserves the right to take further action on this issue if warranted.

Documents (23)

• GM RESPONSE TO 10/25/06 LETTER TO ODI
• DAIMLER CHRYSLER RESPONSE TO 9/29/06 LETTER TO ODI
• FORD RESPONSE TO 09/27/2006 LETTER TO ODI
• GM 10/25/2006 LETTER TO ODI
• GM 10/25/2006 LETTER TO OCC REQUEST FOR CONFIDENTIAL TREATMENT
• GM RESPONSE TO 03/05/2007 WITH ATTACHMENTS
• GM 3/31/2006 LETTER TO ODI
• OPENING RESUME APPROVED (GMC) HUMMER H2 STEERING KNUCKLE FAILURES -P.K. 8 10/28/05 * P
• CLOSING RESUME APPROVED
• DAIMLER CHRSYLER RESPONSE TO 9/29/2006 1 CD ROM ENCLOSURE 1 & 2
• FORD RESPONSE TO 9/27/2006 APPENDIX A,B,C
• GM RESPONSE TO 10/25/2006 WITH ATTACHMENT 1 DISK,ATTACMENT 3 DISK AND WITH RESPONSES
• GM REPONSES TO 2/09/2007 LETTER TO ODI
• IR TO PEER-*08/28/2006*P
• IR TO PEER-*08/28/2006*P
• IR TO MFR-*09/18/2006*P
• OCC 11/30/2006 LETTER TO GM GRANT CONFIDENTIAL TREAMENT TO GM 10/25/2006 LETTER TO OCC
• TOYOTA RESPONSE TO 10/06/06 LETTER TO ODI
• OCC 1/3/2007 LETTER TO GM GRANTED CONFIDENTIAL TREATMENT TO GM 12/18/2006 LETTER TO OCC
• 12/18/2006 LETTER TO OCC REQUEST FOR CONFIDENTIAL TREATMENT
• GM RESPONSE TO 03/05/2007 LETTER TO ODI
• IR TO PEER-*08/28/2006*P
• GM RESPONSE TO 2/09/2007 WITH ATTACHMENTS

Click a tab for more information.