Investigations
REAR AXLE TRAILING ARM FAILURE
NHTSA Preliminary Evaluation PE02086 - closed, opened 2002-11-18.
NHTSA investigation PE02086 is a Preliminary Evaluation opened on 2002-11-18 and currently closed. The subject is tracked inside the Office of Defects Investigation queue. Latest activity on this investigation was logged on 2003-04-09 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
A Preliminary Evaluation like PE02086 is the entry point of the federal defect-investigation process. NHTSA engineers scan complaint databases, field reports, and manufacturer data to decide whether an Engineering Analysis is warranted, whether a voluntary recall is already sufficient, or whether the pattern does not rise to a defect finding.
Investigators summarized the matter as follows: "ANALYSIS OF ODI AND GM DATA HAS IDENTIFIED 14 INCIDENTS OF REAR TRAILING ARM FAILURES IN MODEL YEAR (MY) 1997 THROUGH 1999 GM U-VANS, INCLUDING TWO THAT ALLEGEDLY RESULTED IN CRASHES. THE TRAILING ARM DESIGN IN THESE VEH..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time.
Investigation Summary
ANALYSIS OF ODI AND GM DATA HAS IDENTIFIED 14 INCIDENTS OF REAR TRAILING ARM FAILURES IN MODEL YEAR (MY) 1997 THROUGH 1999 GM U-VANS, INCLUDING TWO THAT ALLEGEDLY RESULTED IN CRASHES. THE TRAILING ARM DESIGN IN THESE VEHICLES IS USED IN THE U-VANS FROM MY 1997 THROUGH 2003. ACCORDING TO GM, THE SUBJECT TRAILING ARMS CAN CRACK OR BUCKLE IF THEY HAVE BEEN DAMAGED DURING ASSEMBLY, PRE-DELIVERY HANDLING, OR CERTAIN SERVICE RELATED ABUSE CONDITIONS (E.G., IMPROPER TOWING OR JACKING). GM IDENTIFIED A PARTS HANDLING CONCERN THAT WAS CAUSING SOME TRAILING ARMS TO BE DAMAGED PRIOR TO INSTALLATION. TO ADDRESS THIS CONCERN, GM IMPLEMENTED CHANGES TO THE SHIPPING CONTAINERS FROM JANUARY 1999 THROUGH SEPTEMBER 1999. EIGHT (8) OF THE REPORTED INCIDENTS IN MY 1997-99 U-VANS, INCLUDING THE TWO CRASHES, OCCURRED IN THE LAST 2 YEARS. THIS INVESTIGATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS TO ASSESS THE TREND AND SAFETY RISK ASSOCIATED WITH THE ALLEGED DEFECT.
About This Investigation Type
A Preliminary Evaluation (PE) is the first phase of NHTSA's investigation process. It is opened when the agency identifies a potential safety defect pattern, usually triggered by consumer complaints, manufacturer reports, or field monitoring. During a PE, NHTSA gathers information to determine whether a formal engineering analysis is warranted.
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.