Investigations
THROTTLE SYSTEM FAILURE
NHTSA Preliminary Evaluation PE87041 - closed, opened 1987-08-04.
NHTSA investigation PE87041 is a Preliminary Evaluation opened on 1987-08-04 and currently closed. The subject is tracked inside the Office of Defects Investigation queue. Latest activity on this investigation was logged on 1987-11-30 - 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 PE87041 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: "SUMMARY OF INFORMATION FROM MANUFACTURER: GM REPORTED KNOWLEDGE OF 137OWNER COMPLAINTS, 317 FIELD REPORTS, AND 2 LAWSUITS, IN ADDITION TO THEREPORTS RECEIVED DIRECTLY BY THE NHTSA. THE REPORTS RECEIVED BY GM CITETHE OCCU..." 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
SUMMARY OF INFORMATION FROM MANUFACTURER: GM REPORTED KNOWLEDGE OF 137OWNER COMPLAINTS, 317 FIELD REPORTS, AND 2 LAWSUITS, IN ADDITION TO THEREPORTS RECEIVED DIRECTLY BY THE NHTSA. THE REPORTS RECEIVED BY GM CITETHE OCCURRENCE OF 263 ACCIDENTS,INCLUDING 77 INJURY ACCIDENTS, 100 INJURIESAND 1 FATALITY.SEVERAL POSSIBLE MODES OF THROTTLE CONTROL SYSTEM FAILURE OR MALFUNCTIONARE UNDER CONSIDERATION IN THIS PE, INCLUDING SELF-ACTUATION, FAILURE TODEACTIVATE UPON DRIVER COMMAND, AND THROTTLE SYSTEM STICKING OR BINDING.HAVING EVALUATED THE 456 REPORTS RECEIVED DIRECTLY AND THE 36 CONSUMERCOMPLAINTS SUBMITTED BY NHTSA, GM INDICATED THAT NO MEANINGFUL FREQUENCYOR MODE OF MALFUNCTION COULD BE IDENTIFIED TO SUGGEST THE EXISTENCE OF ADEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY.SEVERAL DESIGN/MANUFACTURING CHANGES WERE IDENTIFIED AS RELEVANT TO THESUBJECT OF THIS PE; HOWEVER, NO SERVICE BULLETINS OR RECALL NOTIFICATIONSHAVE BEEN ISSUED ON THROTTLE CONTROL SYSTEM PROBLEMS.ANALYSIS: DURING GM'S COMPILATION AND EVALUATION OF INFORMATION REQUIREDTO RESPOND TO THE NHTSA'S REQUEST, INDICATIONS WERE GIVEN TO ODI THAT THENUMBER OF CONSUMER AND OTHER REPORTS CLEARLY SUGGESTED THE EXISTENCE OF ASAFETY PROBLEM AND THAT CORRECTIVE ACTION BY THE MANUFACTURER WERE INORDER. GM'S FORMAL LETTER RESPONSE, HOWEVER, RETREATED FROM THIS POSITION.NOTWITHSTANDING THE INCOMPLETE ANALYSIS OF INFORMATION SUBMITTED TO THENHTSA, THE NUMBERS OF OWNER AND FIELD REPORTS, TOGETHER WITH CLEAR DATATO SHOW THAT THROTTLE SYSTEM FAILURES HAVE RESULTED IN SIGNIFICANT NUMBERSOF ACCIDENTS AND INJURIES, INDICATE THAT A MORE RIGOROUS EVALUATION OF THISMATTER IS IN ORDER.===
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.