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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.

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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

Service Brakes, Hydraulic complaints

222 reports
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Mileage unknown · Aug 18, 2005
Service Brakes, Hydraulic

MY 1999 SILVERADO PICKUP TRUCK IS HAVING BRAKING TROUBLE WHERE THE ABS SYSTEM KICKS ON DURING NORMAL DRY CONDITIONS. IT HAS CAUSED ME TO HAVE SOME NEAR MISSES WHILE TRYING TO STOP THE VEHICLE.*JB

NHTSA ODI #10133273

60,000 miles · Jun 9, 2005
Service Brakes, Hydraulic

I OWN A 1999 CHEVROLET SILVERADO MADE IN THE USA AND THE ABS SYSTEM FAILS TO STOP AT 5 MPH. THE VEHICLE WILL NOT STOP AND THE BRAKE HAS TO BE RELEASED AND PREASSURE REAPPLIED.

NHTSA ODI #10124647

35,000 miles · May 31, 2005
Electrical SystemService Brakes, HydraulicCrash

CONTACT STATES: THE BRAKES FAILED AND THE CONSUMER RAN INTO A VEHICLE. THE ROTORS RUSTED SO BADLY THAT BRAKES WERE NOT BEING APPLIED. WHEN HE CONTACTED GM. THEY TOLD HIM TO TAKE IT TO THE DEALER, AND THE DEALER REPLACED THE HUB ASSEMBLY. THEY WOULDN'T PAY FOR THE BRAKES OR THE DAMAGE DONE TO HIS TRUCK. JUST THE HUB ASSEMBLY.*A…

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CONTACT STATES: THE BRAKES FAILED AND THE CONSUMER RAN INTO A VEHICLE. THE ROTORS RUSTED SO BADLY THAT BRAKES WERE NOT BEING APPLIED. WHEN HE CONTACTED GM. THEY TOLD HIM TO TAKE IT TO THE DEALER, AND THE DEALER REPLACED THE HUB ASSEMBLY. THEY WOULDN'T PAY FOR THE BRAKES OR THE DAMAGE DONE TO HIS TRUCK. JUST THE HUB ASSEMBLY.*AK THE IGNITION SYSTEM WAS REPLACED. *JB

NHTSA ODI #10119551

75,000 miles · May 17, 2005
Service Brakes, Hydraulic

DT: HYDRAULIC BRAKES PROBLEM 09/04 BRAKE PEDAL IS VERY STIFF AT LOW SPEEDS. THIS CAUSES EXTENDED STOPPING DISTANCE. A MECHANIC FRIEND STATES IT IS THE SPEED SENSOR IN THE ANTI-LOCK BRAKE SYSTEM. NO WARNING. HAPPENS IN ANY CONDITIONS. INTERMITTENT, HAPPENS UNDER NORMAL BRAKING CONDITIONS. PERMANENT. CAN'T DEPRESS, THE CONSUMER …

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DT: HYDRAULIC BRAKES PROBLEM 09/04 BRAKE PEDAL IS VERY STIFF AT LOW SPEEDS. THIS CAUSES EXTENDED STOPPING DISTANCE. A MECHANIC FRIEND STATES IT IS THE SPEED SENSOR IN THE ANTI-LOCK BRAKE SYSTEM. NO WARNING. HAPPENS IN ANY CONDITIONS. INTERMITTENT, HAPPENS UNDER NORMAL BRAKING CONDITIONS. PERMANENT. CAN'T DEPRESS, THE CONSUMER MUST PUMP THE BRAKES WHEN ATTEMPTING TO STOP AT LOWS SPEEDS. THE BRAKES HAVE SERVICED REGULARLY AS WELL AS THE VEHICLE. *JB

NHTSA ODI #10121206

40,000 miles · May 5, 2005
Service Brakes, Hydraulic

AT ABOUT 40,000 MILES MY ABS MOTOR UNDER THE DRIVERS SEAT CAME ON AND WOULD NOT TURN OFF. CONTACTED DEALER, THEY SAID THIS WAS A COMMON PROBLEM AND THE PART NEEDED TO FIX IT COST $900. AFTER INVESTIGATING THE PROBLEM I FOUND THERE WERE THOUSANDS OF 99 CHEVY 1500 OWNERS WITH THE EXACT PROBLEM.

NHTSA ODI #10119912

84,000 miles · May 4, 2005
Service Brakes, Hydraulic

ANTI LOCK BRAKE PROBLEMS; AT SLOWER SPEEDS WHEN APPLYING BREAK, BRAKE DOES NOT HOLD.*AK

NHTSA ODI #10119831

Mileage unknown · May 4, 2005
EquipmentService Brakes, Hydraulic

[1] BRAKEING SEEMED TO BE ERRATIC SO I WENT TO A DEALER TO HAVE IT CHECKED OUT.UPON INSPECTION IT WAS FOUND THAT THE REAR BRAKEING SYSTEM WAS RUSTED TO THE POINT OF A CRITICAL CONDITION.[2]LIFE THREATENING. [3]DEALER REPLACED ROTORS,DISKS&PADS ON BOTH REAR WHEELS.

NHTSA ODI #10119722

27,000 miles · May 3, 2005
Service Brakes, Hydraulic

ON SEVERAL DIFFERENT OCCASIONS MY 1999 CHEVROLET SILVERADO 1/2 TON WOULD HAVE A MALFUNCTION WITH THE ANTILOCK BRAKING SYSTEM. THE PROBLEM WOULD OCCUR WHEN I WAS BRAKING TO STOP AT AN INTERSECTION OR DRIVING INTO A PARKING SPACE. EVERY TIME THE SYSTEM WOULD HAVE THE TENDENCY TO INCREASE IN SPEED WHEN APPLYING THE BRAKE. AT ONE TI…

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ON SEVERAL DIFFERENT OCCASIONS MY 1999 CHEVROLET SILVERADO 1/2 TON WOULD HAVE A MALFUNCTION WITH THE ANTILOCK BRAKING SYSTEM. THE PROBLEM WOULD OCCUR WHEN I WAS BRAKING TO STOP AT AN INTERSECTION OR DRIVING INTO A PARKING SPACE. EVERY TIME THE SYSTEM WOULD HAVE THE TENDENCY TO INCREASE IN SPEED WHEN APPLYING THE BRAKE. AT ONE TIME IT CAUSED VERY MINOR DAMAGE TO A BUILDING. EVERY TIME IT WAS TAKEN IN FOR SERVICE AT THE LOCAL CHEVROLET DEALERSHIP AND CLEANING WAS DONE TO THE ANTILOCK SYSTEM. I READ ABOUT THE UPCOMING INVESTIGATION INTO THIS PROBLEM AND WAS INTERESTED TO SEE IF THIS WILL BE A RECALL TO REPAIR THE PROBLEMS?

NHTSA ODI #10119579

48,000 miles · Oct 13, 2004
Service Brakes, Hydraulic

AT SPEEDS UNDER 7 MILES PER HOUR WHEN THE BRAKES ARE APPLIED THE ANTI-LOCK SYSTEM ENGAGES AND WILL NOT ALLOW THE BRAKES TO WORK (NO BRAKES WHATS SO EVER AND THE TRUCK KEEPS ROLLING WITHOUT ANY STOPPING EFFECTS AT ALL). *AK

NHTSA ODI #10095738

Mileage unknown · Jul 19, 2004
Service Brakes, Hydraulic

PROBLEMS WITH ABS SYSTEM ON 1999 CHEVROLET K1500.*MR BEFORE THE CONSUMER TURNED OFF THE ENGINE THE ABS LIGHT ILLUMINATED ON THE DASH. WHEN THE IGNITION WAS OFF THE CONSUMER HEARD A GRINDING NOISE WHICH ORIGINATED UNDER THE VEHICLE. THE CONSUMER CRAWLED UNDER THE VEHICLE AND UNPLUGGED THE ABS AND THE NOISE STOPPED. THE VEHICL…

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PROBLEMS WITH ABS SYSTEM ON 1999 CHEVROLET K1500.*MR BEFORE THE CONSUMER TURNED OFF THE ENGINE THE ABS LIGHT ILLUMINATED ON THE DASH. WHEN THE IGNITION WAS OFF THE CONSUMER HEARD A GRINDING NOISE WHICH ORIGINATED UNDER THE VEHICLE. THE CONSUMER CRAWLED UNDER THE VEHICLE AND UNPLUGGED THE ABS AND THE NOISE STOPPED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DETERMINED THAT THE EBCM SHORTED OUT. THE CONSUMER WAS TOLD THAT THIS IS A COMMON PROBLEM WITH THIS MODEL CHEVROLET. *NM

NHTSA ODI #10083396

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.