IllustrationDT*: THE CONTACT STATED THE ABS ACTIVATES AT SPEEDS BELOW 5 MPH. THERE IS A NHTSA RECALL, # 05V379000, REGARDING THE ANTILOCK BRAKES. THE VEHICLE HAS THE SAME PROBLEMS AS INDICATED IN THE RECALL; HOWEVER, IT IS NOT INCLUDED IN THE RECALL DUE TO THE VIN. UPDATED 2/13/2006 - *NM
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 →How this year compares
Owner complaints by model year
Compare all Silverado 1500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
130–25K
3725–50K
6150–75K
6275–100K
141100–150K
104150K+
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 reportsANTILOCK BRAKES WANTS TO ENGAGE AT LOW SPEEDS AND THE FRONT DRIVERS SEAT RELEASED WHEN STOPPING CAUSING THRUST FORWARD. *NM
ANTILOCK BRAKES WANTS TO ENGAGE AT LOW SPEEDS. *NM
DT: THE CONTACT STATED THERE WAS PULSATION, AND THE ABS BRAKES ENGAGED AT LOW SPEEDS, RESULTING IN EXTENDED STOPPING DISTANCE. THERE WAS NHTSA RECALL CAMPAIGN 05V379000 REGARDING THE ANTI-LOCK BRAKES. THE VEHICLE HAS THE SAME PROBLEMS AS INDICATED IN THE RECALL; HOWEVER, IT WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. NO R…
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DT: THE CONTACT STATED THERE WAS PULSATION, AND THE ABS BRAKES ENGAGED AT LOW SPEEDS, RESULTING IN EXTENDED STOPPING DISTANCE. THERE WAS NHTSA RECALL CAMPAIGN 05V379000 REGARDING THE ANTI-LOCK BRAKES. THE VEHICLE HAS THE SAME PROBLEMS AS INDICATED IN THE RECALL; HOWEVER, IT WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. NO REPAIRS HAVE BEEN MADE.*AK UPDATED 02/07/06. *JB
I HAVE A 1999 CHEVY SILVERADO, WALKED OUT STARTED TRUCK AND THE ABS MODULE FAILED AND RAN CONSTANTLY AS WITH THOUSANDS OF OTHER CHEVY TRUCK OWNER HAVE DONE AS WELL, THIS IS A SHAME. GM NEEDS TO OWN UP TO THEIR MISTAKES AND TAKE CARE OF THIS PROBLEM. THIS IS A VERY DANGEROUS SITUATION NOW HAVING ABS IN A SNOWBOUND STATE, ALSO WHA…
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I HAVE A 1999 CHEVY SILVERADO, WALKED OUT STARTED TRUCK AND THE ABS MODULE FAILED AND RAN CONSTANTLY AS WITH THOUSANDS OF OTHER CHEVY TRUCK OWNER HAVE DONE AS WELL, THIS IS A SHAME. GM NEEDS TO OWN UP TO THEIR MISTAKES AND TAKE CARE OF THIS PROBLEM. THIS IS A VERY DANGEROUS SITUATION NOW HAVING ABS IN A SNOWBOUND STATE, ALSO WHAT IF THIS MODULE FAILED GOING DOWN THE ROAD IN A BRAKING SITUATION WHEN IT WAS NEEDED? THIS IS GOING TO CAUSE A LOT OF COLLISIONS. THIS IS A FAULTY PART PUT ONTO HE TRUCKS BY GM TO TRY AND SAVE MONEY, SEEMS FUNNY THAT THE ABS MODULES PRIOR TO THE 1999 MODELS HAVE NO ISSUES WITH THEM WHAT SO EVER. COME ON GM STEP UP TO YOUR MISTAKES. *JB
DT: THE CONSUMER STATED THAT THE ANTI LOCK BRAKES WERE ACTIVATING AT LOW SPEEDS. THE VEHICLE WAS TAKEN TO THE DEALERSHIP, AND THEY CLEANED THE FRONT HUBS OF RUST. THEN THE ABS WORKED PROPERLY, BUT THE ABS AND BRAKE LIGHT WOULD COME ON. THE VEHICLE WAS TAKEN BACK TO THE DEALERSHIP, AND THEY FOUND THAT THERE WAS AN INTERNAL EL…
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DT: THE CONSUMER STATED THAT THE ANTI LOCK BRAKES WERE ACTIVATING AT LOW SPEEDS. THE VEHICLE WAS TAKEN TO THE DEALERSHIP, AND THEY CLEANED THE FRONT HUBS OF RUST. THEN THE ABS WORKED PROPERLY, BUT THE ABS AND BRAKE LIGHT WOULD COME ON. THE VEHICLE WAS TAKEN BACK TO THE DEALERSHIP, AND THEY FOUND THAT THERE WAS AN INTERNAL ELECTRICAL FAILURE IN THE BRAKE CONTROL MODULE. THEY PERFORMED NHTSA RECALL 05V379000 REPAIRS. WHEN DRIVING THE VEHICLE OFF OF THE LOT IT ALMOST HIT ANOTHER CAR. THE VEHICLE WAS TAKEN BACK TO THE SERVICE DEPARTMENT AND THEY DISCONNECTED THE FUSE FOR THE ABS AND THE ABS LIGHT STAYED ON. THE VEHICLE WOULD NOT PASS INSPECTION. THE CONSUMER CONTACTED GM AND THEY STATED THAT THE PROBLEM WAS NOT RELATED TO THE RECALL AND THE CONSUMER WOULD HAVE TO PAY FOR REPAIRS OUT OF POCKET. *AK (12/01/05) THE TOW HAUL MODE WAS INOPERATIVE. *SC
DT: THE CONTACT IS HAVING A PROBLEM WITH THE ABS. IT IS ENGAGING AT LOW SPEEDS AT 5 MPH. THIS HAS BEEN A CONTINUING PROBLEM FOR THE PAST TWO YEARS. HE PULLED THE ABS FUSE TO GET THE ABS DEACTIVATED. THE VEHICLE IS RUNNING CORRECTLY NOW THAT THE FUSE HAS BEEN REMOVED. HE CONTACTED GM, AND WAS INFORMED THAT THERE WERE NO RECALLS O…
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DT: THE CONTACT IS HAVING A PROBLEM WITH THE ABS. IT IS ENGAGING AT LOW SPEEDS AT 5 MPH. THIS HAS BEEN A CONTINUING PROBLEM FOR THE PAST TWO YEARS. HE PULLED THE ABS FUSE TO GET THE ABS DEACTIVATED. THE VEHICLE IS RUNNING CORRECTLY NOW THAT THE FUSE HAS BEEN REMOVED. HE CONTACTED GM, AND WAS INFORMED THAT THERE WERE NO RECALLS ON THIS VEHICLE. ALSO, HE STATES THAT THE STRAPS ON THE TAILGATE ARE NOT HOLDING CORRECTLY. *AK
FAILURE OF ANTILOCK BRAKES. BRAKES COME ON AT LOW SPEEDS ALMOST CAUSING ACCIDENTS. *NM
DT: THERE IS A RECALL ON THE ANTI LOCK BRAKES . THE CONTACT'S VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. THE BRAKES GRAB ONLY AT LOW SPEEDS. THE CONTACT IS EXPERIENCING THE SAME SYMPTOMS AS INDICATED IN THE RECALL BUT THE VEHICLE IS NOT INCLUDED. THE VEHICLE HAS NOT BEEN TO A DEALER OR SERVICE REPAIR SHOP. THE C…
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DT: THERE IS A RECALL ON THE ANTI LOCK BRAKES . THE CONTACT'S VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN. THE BRAKES GRAB ONLY AT LOW SPEEDS. THE CONTACT IS EXPERIENCING THE SAME SYMPTOMS AS INDICATED IN THE RECALL BUT THE VEHICLE IS NOT INCLUDED. THE VEHICLE HAS NOT BEEN TO A DEALER OR SERVICE REPAIR SHOP. THE CONTACT HAS CALLED CHEVROLET ,WHO OFFERED NO ASSISTANCE OTHER THAN FILING A COMPLAINT. NO REPAIRS OR CORRECTIONS AT THIS TIME. *AK
ANTILOCK BRAKE ILLUMINATION ON PANEL GOES ON AND OFF FOR NO APPARENT REASON. BRAKES, ROTORS AND DRUMS WERE CHECKED, VARIOUS OTHER PROBLEMS INCLUDE,WATER PUMP REPLACED, STARTER REPLACED, RADIATOR REPLACED, HEATER CORE PROBLEMS,ALTERNATOR REPLACED, CERTAIN ILLUMINATION LIGHTS ON RADIO COME ON. *NM
Official recalls
0No 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
2EA04011 · 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.