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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

What owners actually said

587 reports
107,000 miles · Aug 27, 2008
Engine And Engine Cooling

I HAVE A 1999 CHEVROLET SILVERADO TRUCK WITH THE 5.3 LITER V8. THERE HAS BEEN AN ON GOING GRADUAL LOSS OF COOLANT WITH NO APPARENT LEAK TO BE FOUND. UPON FURTHER INVESTIGATION THE CAUSE IS DUE TO THE POOR CASTING OF THE CYLINDER HEADS CAUSING PRESSURIZED COOLANT TO LEAK INTO THE ENGINE. THE SOLUTION IS TO REPLACE THE CASTECH (MF…

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I HAVE A 1999 CHEVROLET SILVERADO TRUCK WITH THE 5.3 LITER V8. THERE HAS BEEN AN ON GOING GRADUAL LOSS OF COOLANT WITH NO APPARENT LEAK TO BE FOUND. UPON FURTHER INVESTIGATION THE CAUSE IS DUE TO THE POOR CASTING OF THE CYLINDER HEADS CAUSING PRESSURIZED COOLANT TO LEAK INTO THE ENGINE. THE SOLUTION IS TO REPLACE THE CASTECH (MFG) HEADS WITH NEW HEADS $1,100 EACH). CHEVROLET IS APPARENTLY AWARE OF THIS COMMON PROBLEM AND HAS ISSUED I BELIEVE SERVICE DOCUMENT 1986750. IF GM IS AWARE OF THIS PROBLEM CAUSED BY THE MIS-MANUFACTURING OF THE PART A RECALL SHOULD BE ISSUED TO ALL AFFECTED VEHICLES. *TR

NHTSA ODI #10240013

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

24,000 miles · Aug 11, 2008
Electrical SystemParking Brake

TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE SERVICE ENGINE, BRAKE LIGHT AND ABS LIGHTS HAVE BEEN ILLUMINATED SINCE THE VEHICLE WAS PURCHASED. THE PARKING BRAKE DOES NOT WORK NORMALLY. THE DEALER STATED THAT THE ELECTRICAL SYSTEM HAD TO BE REPLACED AND ALL RELATED RECALLS WERE PREVIOUSLY REPAIRED. THE CONTACT STATED …

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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. THE SERVICE ENGINE, BRAKE LIGHT AND ABS LIGHTS HAVE BEEN ILLUMINATED SINCE THE VEHICLE WAS PURCHASED. THE PARKING BRAKE DOES NOT WORK NORMALLY. THE DEALER STATED THAT THE ELECTRICAL SYSTEM HAD TO BE REPLACED AND ALL RELATED RECALLS WERE PREVIOUSLY REPAIRED. THE CONTACT STATED THAT THE FAILURES ARE RELATED TO THE RECALLS. THE CONTACT IS RESPONSIBLE FOR ALL COST ASSOCIATED WITH THE REPAIRS. THE FAILURE MILEAGE WAS 264,187.

NHTSA ODI #10237718

101,625 miles · Jul 16, 2008
Service Brakes, Hydraulic

THE INCIDENT HAPPENED WHILE DRIVING MY 1999 CHEVROLET SILVERADO 1500. I WAS APPLYING THE BRAKES TO COME TO A STOP AND ONCE MY SPEED WENT BELOW 5 MILES PER HOUR THE ABS KICKED IN. THIS PREVENTED ME FROM STOPPING MY VEHICLE IMMEDIATELY. I HAD TO SWERVE TO THE SIDE OF THE ROAD TO AVOID HITTING THE VEHICLE IN FRONT OF ME. THERE …

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THE INCIDENT HAPPENED WHILE DRIVING MY 1999 CHEVROLET SILVERADO 1500. I WAS APPLYING THE BRAKES TO COME TO A STOP AND ONCE MY SPEED WENT BELOW 5 MILES PER HOUR THE ABS KICKED IN. THIS PREVENTED ME FROM STOPPING MY VEHICLE IMMEDIATELY. I HAD TO SWERVE TO THE SIDE OF THE ROAD TO AVOID HITTING THE VEHICLE IN FRONT OF ME. THERE WAS NO DAMAGE TO ANYONE OR PROPERTY. THIS BEGAN HAPPENING ON A REGULAR BASIS AFTER THIS EVENT. I HAD TO REMOVE THE MAIN FUSE FOR THE ABS SYSTEM TO PREVENT IT FROM RECURRING. I AM WAITING TO HAVE MY VEHICLE LOOKED AT BY A MECHANIC. MY VEHICLE WAS INCLUDED IN A RECALL FOR A WHEEL SPEED SENSOR WITHIN THE PAST TWO YEARS. *TR

NHTSA ODI #10234558

140,000 miles · Jun 30, 2008
Power Train

REACTION SUN GEAR SHELL FAILURE CAUSING LOSS OF REVERSE AND OTHER FORWARD GEARS. VERY COMMON PROBLEM WITH THIS PARTICULAR TRANSMISSION. *TR

NHTSA ODI #10232686

40,000 miles · Jun 27, 2008
Structure

TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE PUTTING THE TAILGATE DOWN, THE STRAPS FAILED PRIOR TO THE RECALL AND THE HINGES FAILED AFTER THE RECALL. THE CONTACT PURCHASED NEW STRAPS FROM THE PARTS STORE AND THEN RECEIVED A RECALL NOTICE. THE CONSUMER CALLED THE DEALER TO HAVE THE VEHICLE REPAIRED. THE DEALER S…

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TL*THE CONTACT OWNS A 1999 CHEVROLET SILVERADO 1500. WHILE PUTTING THE TAILGATE DOWN, THE STRAPS FAILED PRIOR TO THE RECALL AND THE HINGES FAILED AFTER THE RECALL. THE CONTACT PURCHASED NEW STRAPS FROM THE PARTS STORE AND THEN RECEIVED A RECALL NOTICE. THE CONSUMER CALLED THE DEALER TO HAVE THE VEHICLE REPAIRED. THE DEALER STATED THAT BECAUSE HE DID NOT HAVE THE ORIGINAL STRAPS, THEY WOULD NOT MAKE THE RECALL REPAIRS. THE DEALER WOULD ALSO NOT REPAIR THE TAILGATE HINGES AS STATED IN THE RECALL LETTER. THE FAILURE MILEAGE WAS 40,000 AND CURRENT MILEAGE IS 97,650. UPDATED 07/29/08 *BF RECALL 3 06V066000 UPDATED 07/29/08. *JB

NHTSA ODI #10232497

120,000 miles · Jun 22, 2008
Service Brakes, Hydraulic

ABS MODULE FAILURE. *TR

NHTSA ODI #10231935

60,000 miles · Jun 1, 2008
Service Brakes, Hydraulic

1999 CHEVY SILVERADO 4 WHEEL DRIVE ABS BRAIN BOARD FAILED. *TR

NHTSA ODI #10229437

101,000 miles · May 20, 2008
Electrical SystemFire

TL*THE CONTACT OWNS A 1999 CHEVROLET K1500. ON MAY 17, 2008, WHILE DRIVING 10 MPH, SMOKE APPEARED FROM THE DASHBOARD, FOLLOWED BY FLAMES. THERE WERE NO WARNING INDICATORS PRIOR TO THE FAILURE. THE FIRE DEPARTMENT ARRIVED AND EXTINGUISHED THE FIRE. THE FIRE DEPARTMENT STATED THAT SOMETHING ELECTRICAL HEATED UP UNDER THE DASHB…

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TL*THE CONTACT OWNS A 1999 CHEVROLET K1500. ON MAY 17, 2008, WHILE DRIVING 10 MPH, SMOKE APPEARED FROM THE DASHBOARD, FOLLOWED BY FLAMES. THERE WERE NO WARNING INDICATORS PRIOR TO THE FAILURE. THE FIRE DEPARTMENT ARRIVED AND EXTINGUISHED THE FIRE. THE FIRE DEPARTMENT STATED THAT SOMETHING ELECTRICAL HEATED UP UNDER THE DASHBOARD AND CAUSED THE FIRE. THE CONTACT CHECKED TO SEE IF HE WAS ELIGIBLE FOR ANY REIMBURSEMENTS BECAUSE HE HAS NO COMPREHENSIVE INSURANCE TO COVER THE DAMAGE. THE FAILURE MILEAGE WAS 101,000. UPDATED 6/16/08 *CN

NHTSA ODI #10228361

31,000 miles · May 15, 2008
Service Brakes, Hydraulic

ELECTRONIC BRAKE CONTROL MODULE HAS FAILED, DISABLING THE VEHICLE'S ANTI-LOCK BRAKE SYSTEM. CHEVROLET WANTS $1500 FOR REPAIR AND IT IS A WELL DOCUMENTED COMMON PREMATURE FAILURE. *TR

NHTSA ODI #10227891

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.