The vehicle dossier US · 2004
2004 Chevrolet
MALIBUProblems & recalls
1,147 distinct owner reports in the NHTSA snapshot. Steering appears in 798 of them. Explore what was reported—and which official actions are on file.
01 / Owner-reported evidence
What owners reported.
Categories attached to 1,147 distinct reports. A report can mention more than one component, so category totals can overlap.
See original component labels
These are reports made to NHTSA, not verified diagnoses. More reports can reflect more vehicles, more time on the road, or greater reporting activity.
The reporting timeline
When reports arrived.
Reports by year filed, not by the year a problem occurred. Showing the latest 15 years with reports.
78,500 miles is the median among 942 reports with usable mileage. The middle half spans 34,864–116,000 miles.
This describes the submitted reports. It does not predict when a vehicle will fail.
02 / Official safety campaigns
9 recall campaigns on file.
A campaign can cover only certain production dates or configurations. The count does not tell you whether an individual car has an open recall.
STEERINGCampaign 14E044000
Reported concern
Dorman Products, Inc. (Dorman) is recalling certain replacement intermediate steering shafts sold under the Dorman, OE Solutions, and Solutions brand names, part numbers 425-167, 2425167, and 7-3074, for installation on 2004-2012 Chevrolet Malibu, 2005-2010 Pontiac G6, and 2007-2009 Saturn Aura vehicles. The affected steering shafts may have a yoke that inadequately supports the u-joint bearing resulting in a premature failure.
Manufacturer’s stated response
Dorman will notify owners, and dealers will refund the purchase price or replace the steering shafts, free of charge. The recall began in September 2014. Owners may contact Dorman customer service at 1-800-523-2492.
Read campaign 14E044000 at NHTSAELECTRONIC STABILITY CONTROL (ESC)Campaign 14V252000
Reported concern
General Motors LLC (GM) is recalling certain model year 2004-2012 Chevrolet Malibu vehicles manufactured May 16, 2003, through October 11, 2012, 2004-2007 Malibu Maxx vehicles manufactured June 25, 2003, through April 5, 2007, 2005-2010 Pontiac G6 vehicles manufactured May 26, 2004, through January 4, 2010, and 2007-2010 Saturn Aura vehicles manufactured April 24, 2006, through May 26, 2009. In the affected vehicles, increased resistance in the Body Control Module (BCM) connection may result in voltage fluctuations in the Brake Apply Sensor (BAS) circuit. These fluctuations can cause one or more of these conditions: the brake lights to illuminate without the brake pedal being pushed; the brake lights to not illuminate when the pedal is pushed; difficulty disengaging the cruise control; moving the gear shifter out of the 'PARK' position without pushing the brake; and disablement of crash avoidance features such as traction control, electronic stability control, and panic braking assist features.
Manufacturer’s stated response
GM will notify owners, and dealers will attach the wiring harness to the BCM with a spacer, apply dielectric lubricant to both the BCM and harness connector and the BAS and harness connector, and will relearn the brake pedal home position, free of charge. The manufacturer distributed an Interim letter to customers on July 14, 2014. The recall began on August 18, 2014. Owners may contact General Motors customer service at 1-800-222-1020 (Chevrolet), 1-800-762-2737 (Pontiac), 1-800-553-6000 (Saturn). GM's number for this recall is 13036.
Manufacturer campaign: 13036
Read campaign 14V252000 at NHTSAPOWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFTCampaign 14V224000
Reported concern
General Motors LLC (GM) notified the agency on April 29, 2014, that they are recalling 56,214 model year 2007 and 2008 Saturn Aura vehicles. On May 22, 2014, GM increased the recall to include an additional 1,074,899 model year 2004-2008 Chevrolet Malibu vehicles manufactured from May 16, 2003, through October 5, 2007, model year 2004-2007 Malibu Maxx vehicles manufactured from June 25, 2003, through April 5, 2007, and model year 2005-2008 Pontiac G6 vehicles manufactured from May 26, 2004, through September 28, 2007, and equipped with 4-speed transmissions. The total number vehicles being recalled is now 1,131,113.
Manufacturer’s stated response
GM will notify owners, and GM dealers will replace the shift cable assembly and mounting bracket, free of charge. The manufacturer has not yet provided a notification schedule. Owners may contact General Motors at 1-800-553-6000. GM's number for this recall is 14152.
Manufacturer campaign: 14152
Read campaign 14V224000 at NHTSASTEERING:ELECTRIC POWER ASSIST SYSTEMCampaign 14V153000
Reported concern
General Motors LLC (GM) is recalling certain model year 2004-2006 and 2008-2009 Chevrolet Malibu, 2004-2006 Malibu Maxx, 2009-2010 HHR (non-turbo), 2010 Cobalt, 2008-2009 Saturn Aura and 2004-2007 Ion, and 2005-2009 Pontiac G6. In the affected vehicles, there may be a sudden loss of electric power steering (EPS) assist that could occur at any time while driving.
Manufacturer’s stated response
GM will notify owners, and dealers will perform one of four bulletins. Parts are not currently available. GM expects to send an interim notification around May 28, 2014. When parts are available, owners will be mailed a second letter to come in to have the applicable bulletin applied. Bulletin 14115 covers model year 2004-2007 Saturn Ion, 2009-2010 Chevrolet HHR and 2010 Chevrolet Cobalts. Dealers will replace the EPS motor. Bulletin 14116 covers model year 2004-2006 Chevrolet Malibu and Malibu Maxx, 2005-2006 Pontiac G6 and 2008-2009 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from March 1, 2008, through June 27, 2008. Dealers will replace the torque sensor assembly. Bulletin 14117 covers model year 2008 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from February 1, 2008, through February 28, 2008. Dealers will replace the torque sensor assembly and EPS motor controller unit. Bulletin 14118 covers model year 2008 Chevrolet Malibu, Pontiac G6 and Saturn Aura built from October 1, 2007, through January 31, 2008. Dealers will replace the EPS motor controller unit. The recall began on July 17, 2014. Owners may contact Chevrolet at 1-800-630-2438, Saturn at 1-800-553-6000, and Pontiac at 1-800-620-7668. GM's number for this recall is N140115. Note: GM bulletin number 14119 will be implemented for model year 2006-2008 and early production of 2009 Chevrolet HHR (non-turbo) and model year 2003 Saturn ION to provide EPS Motor replacement for the life of the vehicle.
Manufacturer campaign: N140115
Read campaign 14V153000 at NHTSAFUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMPCampaign 11E009000
Reported concern
TI AUTOMOTIVE IS RECALLING CERTAIN FUEL PUMPS, PART NUMBERS TU456 AND TU303, SOLD UNDER VARIOUS BRAND NAMES AS AFTERMARKET AND REPLACEMENT EQUIPMENT FOR THE MOTOR VEHICLES LISTED ABOVE. THE DEFECTIVE FUEL PUMP MAY SEIZE, STOPPING THE FUEL FLOW TO THE ENGINE CREATING A STALLING CONDITION.
Manufacturer’s stated response
TI AUTOMOTIVE WILL NOTIFY OWNERS OF RECORD AND WILL REPLACE ANY DEFECTIVE FUEL PUMP WITH A NEW OR REWORKED FUEL PUMP FREE OF CHARGE. THE SAFETY RECALL BEGAN ON FEBRUARY 22, 2011. OWNERS MAY CONTACT TI AUTOMOTIVE AT 1-866-867-3759 OR LOG ON TO WWW.RECALLRESPONSE.COM.
Read campaign 11E009000 at NHTSAEXTERIOR LIGHTINGCampaign 09E012000
Reported concern
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
Manufacturer’s stated response
SABERSPORT WILL NOTIFY OWNERS AND OFFER A FULL REFUND FOR THE NONCOMPLIANT COMBINATION LAMPS. THE SAFETY RECALL BEGAN ON MAY 11, 2009. OWNERS MAY CONTACT SABERSPORT AT 1-909-598-7589.
Read campaign 09E012000 at NHTSASERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULECampaign 04V190000
Reported concern
SOME OF THESE PASSENGER VEHICLES HAVE AN ELECTRONIC CONTROL UNIT (ECU) THAT MAY CALCULATE A HIGHER THAN ACTUAL VEHICLE SPEED BECAUSE OF AN ERRATIC REAR-WHEEL SPEED SENSOR SIGNAL, AND CAUSE ABS ACTIVATION WHERE IT IS NOT NEEDED OR NEEDED ABS ACTIVATION TO BE EXTENDED DURING BRAKING AS THE VEHICLE SPEED DROPS TO ABOUT 3 MPH.
Manufacturer’s stated response
DEALERS WILL REPROGRAM THE ABS CONTROLLER. OWNER NOTIFICATION BEGAN ON JUNE 16, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438.
Manufacturer campaign: 04030
Read campaign 04V190000 at NHTSASEAT BELTS:FRONT:ANCHORAGECampaign 04V188000
Reported concern
ON CERTAIN PASSENGER VEHICLES, ANALYSIS OF AN A SIDE IMPACT CRASH TEST CONDUCTED BY THE NHTSA;S NEW CAR ASSESSMENT PROGRAM (NCAP) INDICATED THAT THE OUTBOARD ANCHORAGE OF THE DRIVER'S SEAT BELT COULD DISCONNECT BECAUSE OF CONTACT BETWEEN THE SEAT TRIM AND THE ANCHORAGE CONNECTOR WHEN THE SEAT WAS ADJUSTED TO ITS LOWEST POSITION.
Manufacturer’s stated response
DEALERS WILL INSERT A RETAINER ON BOTH THE DRIVER'S AND PASSENGER'S BELT ANCHORAGES. OWNER NOTIFICATION BEGAN ON JUNE 16, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438.
Manufacturer campaign: 04027
Read campaign 04V188000 at NHTSAEQUIPMENT:OTHER:LABELSCampaign 04V094000
Reported concern
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD (FMVSS) NO. 208, "OCCUPANT CRASH PROTECTION." SOME OF THESE VEHICLES THAT WERE NOT EQUIPPED WITH AN ADVANCED OCCUPANT RESTRAINT SYSTEM (AORS) HAVE DRIVER AND PASSENGER SIDE SUN VISORS WITH AORS LABELS. THE AORS LABELS DO NOT INCLUDE STATEMENTS AND THE ILLUSTRATION REQUIRED BY FMVSS NO. 208 FOR VEHICLES WITHOUT AORS.
Manufacturer’s stated response
OWNERS WILL BE SENT REPLACEMENT LABELS WITH INSTRUCTIONS ON HOW TO INSTALL THEM. OWNER NOTIFICATION BEGAN ON APRIL 21, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438.
Manufacturer campaign: 04011
Read campaign 04V094000 at NHTSA03 / The manufacturer’s record
Instructions. Updates. Responses.
630 distinct communications list this model-year. Showing the latest 12. A matching model-year does not establish that every engine, trim or reported symptom is covered.
PIP5601CThis PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.NHTSA ID 11020816
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11020816 at NHTSAPIP5358DThis Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a …NHTSA ID 11014455
This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11014455 at NHTSAPIP4723JThis Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/chargin…NHTSA ID 11009156
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
Components: ELECTRICAL SYSTEM. Confirm detailed applicability in the original document.
Source record 11009156 at NHTSAPIT5099HThis Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will ne…NHTSA ID 11007744
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11007744 at NHTSAPIT5099HThis Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will ne…NHTSA ID 11007743
This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11007743 at NHTSAPIT3271PThis Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested an…NHTSA ID 11007208
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11007208 at NHTSAGeneral CommunicationVehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updatin…NHTSA ID 11006621
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.
Campaign / software reference: General Communication
Components: ELECTRICAL SYSTEM. Confirm detailed applicability in the original document.
Source record 11006621 at NHTSA24-NA-141GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin adv…NHTSA ID 11006421
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.
Components: POWER TRAIN. Confirm detailed applicability in the original document.
Source record 11006421 at NHTSA16-NA-383This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier…NHTSA ID 11004761
This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
Components: ENGINE · FUEL/PROPULSION SYSTEM. Confirm detailed applicability in the original document.
Source record 11004761 at NHTSA18-NA-099This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.NHTSA ID 11004557
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11004557 at NHTSA24-NA-098This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution info…NHTSA ID 11002312
This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
Components: ELECTRICAL SYSTEM. Confirm detailed applicability in the original document.
Source record 11002312 at NHTSA09-00-89-008GThis Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.NHTSA ID 11000576
This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
Components: UNKNOWN OR OTHER. Confirm detailed applicability in the original document.
Source record 11000576 at NHTSARecords below contain the NHTSA bulk summary unless a document-reviewed explainer is linked. A service bulletin is not a safety recall or a promise of a free repair. Records may be revised or superseded; verify the current document with the manufacturer.
04 / Agency investigations
Official inquiries.
An investigation is an inquiry into a potential concern. Its presence does not establish a defect, and a closed case does not certify a car’s condition.
Turn Signal LampsEA09004
GM designed the MY 2004 and 2005 Chevrolet Malibu and Malibu Maxx vehicles with a daytime running lamp (DRL) system that uses the same filament (the high power filament of a dual filament bulb) as the front turn signals.The high power filament operates at full battery voltage when functioning as a DRL.The DRL is illuminated whenever the headlamps are off, increasing the duty cycle of the front turn signal bulb.The MY 2003 and earlier Malibu vehicles (Malibu Maxx was not manufactured for sale in the U.S. prior to MY 2004) used a headlamp based design, operated at a reduced voltage, for the DRL function; GM reverted back to this design on the MY 2006 and later Malibu and Malibu Maxx vehicles. Filament based bulbs have a finite life (hours of illumination) for any given operating voltage.As a result, increasing the duty cycle of a bulb typically decreases the life span of the bulb.GM identified and addressed two front turn signal/DRL and rear turn signal bulb quality issues early in MY 2004 production, however vehicle warranty claims for failed bulbs continued to occur.To address the high warranty levels of bulb failures (90% of the warranty claims submitted to ODI by GM were bulb failures and 10% were socket failures), GM issued a technical service bulletin in March 2006 advising dealers to use a new specification of bulb when addressing service failures, and to also inspect the electrical sockets for thermal damage and replace if necessary.In June 2006 (after subject vehicle production ended) GM changed the turn signal bulb specification to that of the TSB bulb in vehicle production also.To date, ODI has not identified any allegations of crash, injury, or fire related to the alleged defect even though the subject vehicles have experienced 5 - 6 years of field exposure.ODI's analysis of consumer complaints, both VOQ and manufacturer, shows a declining trend.The warranty rate for turn signal bulb replacement is high however statistical analysis of the warranty data suggests that the majority of the original equipment bulbs have already been replaced.GM conducted a safety recall (06V-263) for MY 2004-2005 Cadillac XLR to replace the front turn signal/DRL bulbs and the electrical sockets.However GM advised that the turn signal/DRL bulbs/sockets on the subject vehicles differ from those on the recalled XLRs in several respects, including using bulb sockets with four electrical terminals as opposed to three, which improves the electrical connection, allows the bulb to operate at a lower temperature, and adds stability to the bulb in the socket; operating at a lower voltage, which increases vehicle bulb life; using vented headlamps, which allows bulbs to run cooler than those installed in a non-vented XLR headlamp; and using a clear bulb, which runs cooler than the amber bulbs installed on the XLR.Additionally, the warranty claim level related to subject vehicle sockets is unremarkable compared to other defect investigations into defective socket assemblies.A safety-related defect trend has not been identified at this time.Further use of agency resources does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.The agency will take further action if warranted by the circumstances.See attached report for further information.
Recorded closure: Aug 12, 2010
Find investigation EA09004TURN SIGNAL LAMPSPE08062
THE SUBJECT VEHICLES MAY EXPERIENCE LOSS OF FUNCTION OF ONE OR MORE OF THE PARK, TURN, STOP OR DAYTIME RUNNING LAMPS (DRL).FAILURE OF THE BULB MAY ALSO INCLUDE DISCOLORATION (HEAT DAMAGE) TO THE BULB SOCKET.GENERAL MOTORS (GM) TECHNICAL SERVICE BULLETIN (TSB) NUMBER 06-08-42-004C INSTRUCTS TECHNICIANS TO EXAMINE THE LAMP HOUSING FOR SIGNS OF DISCOLORATION AND TO REPLACE THE BULBS AND OR SOCKETS DEPENDING ON THE SEVERITY OF THE DISCOLORATION AND THE CONDITION OF THE BULBS AND SOCKETS.THE SCOPE OF INVESTIGATION IN THE PRELIMINARY EVALUATION (PE08-062) WAS THE 2004 MALIBU/MAXX.HOWEVER, THE AGENCY EVALUATED GM'S WARRANTY DATA WHICH INDICATES THAT THE 2005 MODEL YEAR (MY) MALIBU AND MALIBU MAXX VEHICLES ARE ALSO AFFECTED BY THIS CONDITION.THIS INVESTIGATION IS UPGRADED TO AN ENGINEERING ANALYSIS (EA09-004).
Recorded closure: Mar 20, 2009
Find investigation PE08062LOSS OF ELECTRIC POWER STEERINGEA04018
IN PERFORMING THIS ENGINEERING ANALYSIS, ODI DETERMINED THAT THE ELECTRIC POWER STEERING SYSTEM IN THE SUBJECT VEHICLES CAN MALFUNCTION OR FAIL, CAUSING THE DRIVER TO LOSE POWER STEERING ASSISTANCE; HOWEVER, DUE TO THE FOLLOWING REASONS, ODI HAS DECIDED THAT FURTHER EXPENDITURE OF AGENCY RESOURCES ON THIS INVESTIGATION IS NOT WARRANTED AT THIS TIME: - GM ISSUED CUSTOMER SATISFACTION CAMPAIGN (CSC) 04050A INDECEMBER 2004 TO ADDRESS THE ALLEGED DEFECT IN APPROXIMATELY58,700 SUBJECT VEHICLES, ENCOMPASSING AT LEAST 97 PERCENT OF THECOMPLAINT AND WARRANTY CLAIMS POPULATION.VEHICLES OUTSIDE THECSC 04050A POPULATION CONTAIN A NEWLY DESIGNED TORQUE ANDPOSITION SENSOR AND HAVE EXPERIENCED A RELATIVELY LOW COMPLAINTRATE.THIS CUSTOMER SATISFACTION CAMPAIGN PRESENTLY HAS ACOMPLETION RATE OF 52%. - THE IMPACT ON THE DRIVER?S ABILITY TO CONTROL THESE RELATIVELYSMALL AND LIGHT VEHICLES WAS LIMITED.VRTC TEST ENGINEERS WEREUNABLE TO INDUCE A FAILURE MODE THAT WOULD CAUSE THE EPS TOSUBSTANTIALLY LIMIT THE DRIVER?S ABILITY TO TURN THE VEHICLE IN APARTICULAR DIRECTION OR TO PROVIDE THE DRIVER WITH UNINTENDEDPOWER ASSISTANCE.- THERE IS NO RISK OF FIRE.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL CONTINUE TO MONITOR COMPLAINTS AND OTHER INFORMATION RELATING TO THE ALLEGED DEFECT IN THE SUBJECT VEHICLES AND TAKE FURTHER ACTION IN THE FUTURE IF WARRANTED BY THE CIRCUMSTANCES.(FOR FURTHER DETAILS SEE ATTACHED ENGINEERING ANALYSIS (EA04-018)CLOSING REPORT.)
Recorded closure: May 10, 2005
Find investigation EA04018LOSS OF ELECTRIC POWER STEERINGPE04031
ODI OPENED PE04-031 BASED ON EIGHT REPORTS OF ALLEGED POWER STEERING FAILURE IN THE SUBJECT VEHICLES.THE COMPLAINTS ALLEGE THAT THE DRIVER SUDDENLY LOST ALL ELECTRIC POWER STEERING ASSISTANCE WITHOUT WARNING MAKING THE VEHICLE DIFFICULT TO STEER. THE SUBJECT VEHICLE UTILIZES AN ELECTRIC POWER STEERING ASSIST SYSTEM (EPS) THAT PROVIDES VARIABLE STEERING ASSISTANCE BASED ON STEERING WHEEL TORQUE, STEERING WHEEL POSTION, AND VEHICLE SPEED.GENERAL MOTORS DOCUMENTS IDENTIFIED THE FOLLOWING TWO FACTORS THAT CONTRIBUTED TO THE ALLEGED DEFECT IN THE SUBJECT VEHICLES: A.CONTAMINATION OF THE TORQUE AND POSITION SENSOR FROM THESEPARATION OF GREASE APPLIED TO THE STEERING COLUMN ASSEMBLY. B.ELECTRICAL NOISE GENERATED ON THE POWER AND GROUND SLIP RING SURFACES OF THE TORQUE AND POSITION SENSOR.THE NOISE IS GENERATED AS THE SENSOR CONTACT BRUSHES MOVE ALONG THE SLIP RING SURFACES WHEN THE STEERING WHEEL IS ROTATED.ODI'S ANALYSIS SHOWED FAILURERATES THAT ARE OF CONCERN TO ODI AND INDICATED THAT THE ALLEGED DEFECT IS CONTINUING TO OCCUR IN THE SUBJECT VEHICLES. THIS PRELIMINARY EVALUATION HAS BEEN UPGRADED TO AN ENGINEERING ANALYSIS TO FURTHER INVESTIGATE THIS CONCERN, TO ASSESS THE POTENTIAL SAFETY-RELATED CONSEQUENCES, AND TO DETERMINE THE SCOPE OF THE AFFECTED POPULATION.
Recorded closure: Jul 1, 2004
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