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1999 Chevrolet Silverado 1500

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 1999 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.

About this comparison →

When problems were reported

Mileage at the reported incident

418 reports with mileage · 169 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes, Hydraulic. Review the 222 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 126 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

43 crash reports5 fire reports18 injury reports

Air Bags complaints

19 reports
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Mileage unknown · Oct 14, 2023
Air BagsCrash

Driving 65 miles and I rear ended another vehicle from behind. The air bags did not deployed.

NHTSA ODI #11549980

137,000 miles · Apr 14, 2016
Air BagsFuel/propulsion SystemSteering

TAKATA RECALL? I WOULD LIKE TO KNOW WHAT RECALLS WERE MADE ON THIS VEHICLE THAT I MIGHT HAVE MISSED? AND WHAT TO DO ABOUT THEM. MY DEALER WENT OUT OF BUSINESS AND I WAS NEVER NOTIFIED ABOUT ANY OF THE RECALLS I AM JUST NOW FINDING OUT ABOUT. THANK YOU.

NHTSA ODI #10855543

81,143 miles · Aug 24, 2015
Air BagsElectrical System

I HAD THE IGNITION SLEEVE REQUIRED IN RECALL DONE. NEVER HAD PROBLEMS WITH KEY BEFORE THAT. SINCE THEN, HAVE TROUBLE STARTING CAR; THE GARAGE REPLACED BATTERY (WAS 6 YRS. OLD) BECAUSE THEY COULD FIND NOTHING ELSE WRONG WITH THE CAR. STILL I HAVE DIFFICULTY STARTING THE CAR..........YESTERDAY IT TOOK 3 TRIES. I MOVED IN THE …

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I HAD THE IGNITION SLEEVE REQUIRED IN RECALL DONE. NEVER HAD PROBLEMS WITH KEY BEFORE THAT. SINCE THEN, HAVE TROUBLE STARTING CAR; THE GARAGE REPLACED BATTERY (WAS 6 YRS. OLD) BECAUSE THEY COULD FIND NOTHING ELSE WRONG WITH THE CAR. STILL I HAVE DIFFICULTY STARTING THE CAR..........YESTERDAY IT TOOK 3 TRIES. I MOVED IN THE INTERIM OF HAVING THIS DONE....SO GOING BACK TO SIMON CHEVROLET IN WOONSOCKET,RI IS OUT OF THE QUESTION. I CALLED SALVATORE CHEVROLET IN GARDNER, MA. AND THEY TOLD ME THERE WOULD BE A $200. CHARGE TO FIND OUT WHAT THE PROBLEM WAS. NEVER HAD PROBLEMS BEFORE AND THIS SHOULD NOT BE A CHARGED FOR ISSUE. ANY SUGGESTIONS? ALSO, THIS MORNING THE DIAMOND SHAPED BUTTON FOR THE WARNING LIGHTS BROKE OFF AND FELL INTO DASH......THE CAR IS SOUND AND I KEEP IT WELL KEPT UP. THESE ARE JUST FRUSTRATING ISSUES. PLEASE ADVISE. THANK YOU FOR THE TIME AND EFFORT PUT INTO THIS MATTER. SINCERELY....[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10758760

Mileage unknown · Nov 26, 2013
Air BagsCrashInjury

MY VEHICLE WAS WRECKED BY ANOTHER VEHICLE ON THE PASSENGER SIDE. THE VEHICLE THAT HIT MY VEHICLE WAS GOING EXCESSIVE SPEEDS (50-60MPH) AND RAN A STOP SIGN. DURING THE INCIDENT A PASSENGER WAS THROWN FROM THE VEHICLE OUT OF THE PASSENGER SIDE WINDOW. THE FRONT AXEL WAS BROKEN AND THE ENTIRE PASSENGER SIDE WHEEL WAS TORN OFF INCL…

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MY VEHICLE WAS WRECKED BY ANOTHER VEHICLE ON THE PASSENGER SIDE. THE VEHICLE THAT HIT MY VEHICLE WAS GOING EXCESSIVE SPEEDS (50-60MPH) AND RAN A STOP SIGN. DURING THE INCIDENT A PASSENGER WAS THROWN FROM THE VEHICLE OUT OF THE PASSENGER SIDE WINDOW. THE FRONT AXEL WAS BROKEN AND THE ENTIRE PASSENGER SIDE WHEEL WAS TORN OFF INCLUDING THE AXEL AND BRAKES. THERE WAS SO MUCH DAMAGE DONE TO THE FRONT PASSENGER SIDE OF THE VEHICLE IT IS A MAJOR CONCERN THAT NO AIRBAGS WERE DEPLOYED DURING IMPACT. THE VEHICLE ADVERTISES DRIVER AND PASSENGER AIRBAGS. *TR

NHTSA ODI #10553810

Mileage unknown · Sep 28, 2012
Air BagsVehicle Speed ControlCrashInjury

I WAS PULLING IP TO A STOP SIGN AND MY THROTTLE STUCK AND I HAD NO CONTROL TO STOP IT AND A GUY HIT ME IN THE FRONT END WHERE ALL THE SENSORS TO MY AIRBAGS WERE AND THEY NEVER DEPLOYED AND THE GUY WAS GOING 95 MPH WHEN HE HIT ME. *TR

NHTSA ODI #10477351

192,800 miles · Dec 30, 2009
Air Bags

TL* THE CONTACT OWNS A 1999 CHEVROLET K1500. WHILE DRIVING 35 MPH. THE AIR BAGS DEPLOYED WITHOUT WARRANT. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION. AN INDEPENDENT TECHNICIAN (FRANK TAYLOR)WAS SENT FROM THE DEALER TO INSPECT THE VEHICLE. THE TECHNICIAN SENT A REPORT TO GENERAL MOTORS. GENERAL MOTORS CONTACTED HIM AND …

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TL* THE CONTACT OWNS A 1999 CHEVROLET K1500. WHILE DRIVING 35 MPH. THE AIR BAGS DEPLOYED WITHOUT WARRANT. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION. AN INDEPENDENT TECHNICIAN (FRANK TAYLOR)WAS SENT FROM THE DEALER TO INSPECT THE VEHICLE. THE TECHNICIAN SENT A REPORT TO GENERAL MOTORS. GENERAL MOTORS CONTACTED HIM AND INFORMED HIM THAT THE MODULE UNDER THE SEAT HAD DEVELOPED MOISTURE . HE WAS INELIGIBLE FOR A FREE REMEDY. THE FAILURE MILEAGE WAS 192,800. UPDATED 01/29/10 *BF UPDATED 02/01/10.*JB

NHTSA ODI #10297524

238,000 miles · Aug 14, 2008
Air BagsCrash

RUN OFF THE ROAD AND HIT TREE HEAD-ON . DRIVER SIDE AIR BAG DID NOT DEPLOY TRUCK WAS A 1999 AND AIR BAGS HAD NEVER BEEN REPLACED, I BOUGHT TRUCK NEW . *TR

NHTSA ODI #10238133

Mileage unknown · Mar 26, 2007
Air BagsCrashInjury

AIR BAGS 1999 CHEVROLET PICKUP FAILED TO OPEN /DEPLOY. *AK

NHTSA ODI #10186227

59,000 miles · Nov 1, 2004
Air BagsCrashInjury

1999 C1500 P/U HIT A VAN NEAR HEAD ON AT 50 MPH. DRIVER'S AIRBAG DID NOT DEPLOY (PASS. WAS SHUT OFF). TRUCK WAS DEMOLISHED.*AK

NHTSA ODI #10098099

Mileage unknown · Sep 23, 2003
Air BagsCrashInjury

WHILE DRIVING ABOUT 70 MPH ON THE HIGHWAY AND WITHOUT PRIOR WARNING DRIVER HIT A POTHOLE ON THE HIGHWAY CAUSING VEHICLE TO HYDROPLANE AND HIT A BRIDGE. UPON IMPACT, DUAL AIR BAGS DID NOT DEPLOY. DRIVER HIT HIS HEAD AND WAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE, THERE WAS NO FATALITY.*AK

NHTSA ODI #10040456

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

EA04011 · Parking Brake Failure

Opened Apr 9, 2004 · Closed May 10, 2005

Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical; Parking Brake:conventional:mechanical:linkage And Cable

IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Additional source detail variants (4)

Parking Brake:conventional

IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Parking Brake:conventional:mechanical

IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Parking Brake:conventional:mechanical:linkage And Cable

IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

Parking Brake

IN A LETTER DATED APRIL 20, 2005, GM NOTIFIED NHTSA THAT IT HAD DECIDED THAT DEFECTS THAT RELATE TO MOTOR VEHICLE SAFETY EXIST IN CERTAIN MODEL YEAR (MY) 1999-2002 C/K 1500 SERIES (PBR PARKING BRAKE SYSTEM) AND MY 2001-2005 C/K 2500 AND 3500 SERIES (TRW PARKING BRAKE SYSTEM) PICKUPS WITH MANUAL TRANSMISSIONS.ACCORDING TO GM, SOME OF THESE VEHICLES MAY HAVE CONDITIONS THAT CAUSE THE FRICTION LININGS TO WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.GM'S ACTION COVERS AN ESTIMATED TOTAL OF 142,585 VEHICLES.DEALERS WILL INSTALL A LOW-FORCE SPRING CLIP RETAINER FOR VEHICLES EQUIPPED WITH THE PBR PARKING BRAKE SYSTEM AND INSTALL A REDESIGNED PARKING BRAKE CABLE ASSEMBLY ON VEHICLES EQUIPPED WITH THE TRW PARKING BRAKE SYSTEM. A TOTAL OF 58 NON-DUPLICATIVE COMPLAINTS WERE RECEIVED BY ODI AND GM CONCERNING THE APPROXIMATELY 59,000 MY 1999-2002 C/K 1500 SERIES PICKUP TRUCKS WITH THE PBR PARKING BRAKE SYSTEM.THESE INCLUDED 22 ALLEGED ROLLAWAY INCIDENTS, RESULTING IN A RATE OF 38.5 ROLLAWAY INCIDENTS PER 100,000 VEHICLES.ODI IS AWARE OF 24 COMPLAINTS REGARDING THE MY 2001-2005 C/K 2500 AND 3500 SERIES MANUAL TRANSMISSION TRUCKS RECALLED BY GM, INCLUDING 5 ALLEGING ROLLAWAY INCIDENTS.THOUGH THE CONDITIONS DESCRIBED IN GM'S LETTER ARE ALSO PRESENT IN THE C/K TRUCKS WITH AUTOMATIC TRANSMISSIONS, THE ROLLAWAY RATE IN THOSE VEHICLES WAS SIMILAR TO THOSE OBSERVED IN PEER VEHICLES STUDIED BY ODI IN THIS INVESTIGATION.THIS ENGINEERING ANALYSIS IS CLOSED. FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.

PE03057 · Parking Brake Failure

Opened Dec 8, 2003 · Closed Apr 9, 2004

Status: closed (inferred from source dates) · Parking Brake

ODI OPENED PE03-057 TO ASSESS PARKING BRAKE INEFFECTIVENESS IN THE SUBJECT VEHICLES.THESE VEHICLES ARE EQUIPPED WITH FOUR WHEEL DISC BRAKES THAT INCORPORATE A SINGLE-SHOE DRUM-IN-HAT PARKING BRAKE INDEPENDENT OF THE SERVICE BRAKES.COMPLAINT AND WARRANTY DATA INDICATE THAT THE PARKING BRAKE LININGS TEND TO WEAR OUT EARLY IN THE LIFE OF THE VEHICLE (AT AN AVERAGE OF 24 MONTHS IN SERVICE), REDUCING THE PARKING BRAKE SYSTEM'S TORQUE BELOW THAT NEEDED TO IMMOBILIZE THE VEHICLE.GM HAS ATTRIBUTED THIS ACCELERATED WEAR TO FOREIGN MATERIAL INTRUSION AND A FAILURE OF THE BRAKE SHOE TO PROPERLY SELF-CENTER WITHIN ITS BRAKE DRUM.EFFECTIVE WITH THE START OF MY 2003 PRODUCTION, A NEWER REDUCED FORCE HOLD-DOWN CLIP WAS INTRODUCED TO FACILITATE BRAKE SHOE DISENGAGEMENT FROM THE DRUM SURFACE.THIS PART IS ALSO AVAILABLE AT THE SERVICE LEVEL FOR THE MY 1999-2002 VEHICLES.GM HAS INDICATED THAT THE PAKING BRAKE IS INTENDED TO OPERATE IN CONJUNCTION WITH THE TRANSMISSION TO IMMOBILZE PARKED VEHICLES, AND THAT IN MANY CASES, ACCELERATED PARKING BRAKE LINING WEAR IS CAUSED BY ROUGH USE, VEHICLE MODIFICATIONS, AND DRIVING WITH THE PARKING ENGAGED. ODI HAS UPGRADED THE PRELIMINARY EVALUATION TO AN ENGINEERING ANALYSIS TO GATHER FURTHER INFORMATION CONCERNING PARKING BRAKE USAGE FACTORS AND THE CIRCUMSTANCES SURROUNDING THE SEVENTEEN REPORTED VEHICLE CRASHES.