Investigations
TIMING CHAIN FAILURE - STALL
NHTSA Engineering Analysis EA06009 — closed, opened 2006-06-06 and involving the SATURN SATURN.
NHTSA investigation EA06009 is a Engineering Analysis opened on 2006-06-06 and currently closed. The subject of record is SATURN SATURN, which places this file inside the Office of Defects Investigation queue for SATURN. Latest activity on this investigation was logged on 2007-11-09 — NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
An Engineering Analysis like EA06009 is the deeper technical phase that follows a PE. NHTSA requests design, warranty, and field-failure data from the manufacturer, conducts its own testing when needed, and determines whether the evidence supports a safety defect finding that would compel a recall.
Investigators summarized the matter as follows: "IN A NOVEMBER 7, 2007 LETTER, GENERAL MOTORS (GM) NOTIFIED ODI THAT IT HAD DETERMINED THAT A SAFETY DEFECT EXISTED IN CERTAIN MODEL YEAR (MY) 2001 SATURN L-SERIES VEHICLES EQUIPPED WITH THE 2.2L 4-CYLINDER (L61) ENGINE B..." 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. Related SATURN files, listed below, give context on whether this is an isolated concern or part of a broader pattern across the brand.
Investigation Summary
IN A NOVEMBER 7, 2007 LETTER, GENERAL MOTORS (GM) NOTIFIED ODI THAT IT HAD DETERMINED THAT A SAFETY DEFECT EXISTED IN CERTAIN MODEL YEAR (MY) 2001 SATURN L-SERIES VEHICLES EQUIPPED WITH THE 2.2L 4-CYLINDER (L61) ENGINE BUILT FROM NOVEMBER 2000 THROUGH FEBRUARY 2001. THE DEFECT COULD RESULT IN ENGINE STALL WHILE DRIVING WITH NO RESTART. GM WILL RECALL (07V-519) THE VEHICLES TO REPLACE THE TIMING CHAINS WITH REDESIGNED PARTS. DURING THIS ENGINEERING ANALYSIS GM AND ODI CONTACTED SATURN OWNERS THAT HAD WARRANTY WORK PERFORMED RELATED TO TIMING CHAIN REPLACEMENTS OR REPAIRS IN ORDER TO DETERMINE CERTAIN SAFETY CONSEQUENCES ASSOCIATED WITH TIMING CHAIN FAILURE. BASED ON ANALYSIS OF WARRANTY CLAIM VERBATIM TEXT FOR INDICATIONS OF STALL WHILE DRIVING (SWD) AND THE RESULTS FROM A SURVEY OF WARRANTY CLAIMS WITH AMBIGUOUS TEXT, GM ESTIMATED THAT 55% OF ALL TIMING CHAIN WARRANTY REPAIRS INVOLVED SWD INCIDENTS. ODI'S ANALYSIS ESTIMATED APPROXIMATELY 76% OF WARRANTY REPAIRS MAY HAVE INVOLVED A SWD. THE SURVEYS WERE ALSO USED TO ASSESS THE SAFETY CONSEQUENCES OF THE SWD INCIDENTS. THE CALLS FOUND THAT NONE OF THE VEHICLES THAT EXPERIENCING STALLS DUE TO TIMING CHAIN FAILURE COULD BE RESTARTED. IN ADDITION, APPROXIMATELY ONE-THIRD OF THE STALLS OCCURRED AT SPEEDS GREATER THAN 40 MPH AND ABOUT 20% INDICATED THAT THEY WERE NOT ABLE TO GET THE VEHICLE OUT OF TRAFFIC AFTER THE ENGINE DIED. GM'S STATISTICAL ANALYSES OF FAILURE DATA ESTIMATED STALL WHILE DRIVING RATES OF 1.7% AND 5.2% AT 3 AND 6 YEARS IN SERVICE. ODI'S ANALYSES ESTIMATED SLIGHTLY HIGHER RATES OF 2.3% AND 7.0% AT 3 AND 6 YEARS IN SERVICE. THIS ENGINEERING ANALYSIS IS CLOSED BASED ON GM'S RECALL.
About This Investigation Type
An Engineering Analysis (EA) is the in-depth phase following a Preliminary Evaluation. NHTSA engineers conduct testing, collect data from manufacturers, and perform detailed technical analysis to determine whether a safety defect exists. An EA may lead to a voluntary recall by the manufacturer or, in rare cases, a mandatory recall order.
Other SATURN Investigations
Electric Power Steering Failure
Electric Power Steering Failure
OUTSIDE DOOR HANDLES STICK UNLATCHED
TIMING CHAIN BREAKS, ENGINE STALL
TIMING CHAIN FAILURE-STALL
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. Learn more.
Read our methodology — how this data is sourced, computed, and verified.