IllustrationDT*: THE CONTACT STATED THE ABS LIGHT ILLUMINATED INTERMITTENTLY AND THE VEHICLE REQUIRED EXCESSIVE STOPPING DISTANCE. THE DEALERSHIP REPLACED THE WHEEL SENSOR, BUT THE PROBLEM PERSISTED. THERE WAS AN NHTSA RECALL, #05V379000, REGARDING THE ANTILOCK BRAKES. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN.
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 reportsABS LIGHT COMING ON. MAY GO A WEEK BEFORE IT COMES ON OR THE NEXT TIME I START THE TRUCK UP NO PATTERN BRAKES STILL WORK , 99 SILVERADO. *NM
I NOTICED PRESSING THE BRAKES AT SLOW SPEED THE BRAKES BECAME SOFT AND THE ABS SYSTEM KICKED IN. THERE IS A RECALL FOR THIS EXACT THING IN CERTAIN STATES BUT NOT MINE AND I AM BEING TOLD I HAVE TO PAY 800$ TO REPAIR IT. *JB
DT*: THE CONTACT STATED WHILE ROTATING THE TIRES, THERE WAS EXTREME CORROSION ON THE ROTORS, AND UPON FURTHER INSPECTION THE PARKING BRAKE WAS EXTREMELY WORN AS WELL. THE VEHICLE WAS EXPOSED TO HARSH WINTER WEATHER, BUT ROAD SALTS WERE NOT USED. THERE IS A NHTSA RECALL, #05V161000, REGARDING THE PARKING BRAKE. THE VEHICLE VI…
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DT*: THE CONTACT STATED WHILE ROTATING THE TIRES, THERE WAS EXTREME CORROSION ON THE ROTORS, AND UPON FURTHER INSPECTION THE PARKING BRAKE WAS EXTREMELY WORN AS WELL. THE VEHICLE WAS EXPOSED TO HARSH WINTER WEATHER, BUT ROAD SALTS WERE NOT USED. THERE IS A NHTSA RECALL, #05V161000, REGARDING THE PARKING BRAKE. THE VEHICLE VIN WAS NOT INCLUDED IN THE RECALL. THE MANUFACTURER WAS ALERTED.
DT*: THE CONTACT STATED AFTER PARKING THE VEHICLE, A NOISE LIKE A SMALL ELECTRIC MOTOR RUNNING WAS HEARD. THE UNDERSIDE OF THE VEHICLE WAS INSPECTED BY THE CONTACT. THE PLUG TO THE ABS ANTILOCK BRAKE PUMP WAS DISCONNECTED. A SERVICE DEALER WAS CONTACTED AND OFFERED TO DIAGNOSE AND REPLACE THE PUMP AT HALF THE COST. THE MANUFACTU…
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DT*: THE CONTACT STATED AFTER PARKING THE VEHICLE, A NOISE LIKE A SMALL ELECTRIC MOTOR RUNNING WAS HEARD. THE UNDERSIDE OF THE VEHICLE WAS INSPECTED BY THE CONTACT. THE PLUG TO THE ABS ANTILOCK BRAKE PUMP WAS DISCONNECTED. A SERVICE DEALER WAS CONTACTED AND OFFERED TO DIAGNOSE AND REPLACE THE PUMP AT HALF THE COST. THE MANUFACTURER WAS NOTIFIED AND MADE THE SAME OFFER. UPDATED 10/25/2006
MARCH,2004 SHUT OFF TRUCK AND HEARD SOUND (LIKE A SMALL ELECTRIC MOTOR RUNNING) COMING FROM UNDER TRUCK. UNPLUGGED ELECTRICAL CONNECTION TO AVOID RUNNING BATTERY DOWN. CALLED MY MECHANIC AND HE KNEW RIGHT AWAY WHAT WAS WRONG, HE SAID HE HAS SEEN QUITE A FEW OF THE 1999 PICKUPS WITH THE SAME CONDITION. AS A FRIEND HE LOOKED A…
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MARCH,2004 SHUT OFF TRUCK AND HEARD SOUND (LIKE A SMALL ELECTRIC MOTOR RUNNING) COMING FROM UNDER TRUCK. UNPLUGGED ELECTRICAL CONNECTION TO AVOID RUNNING BATTERY DOWN. CALLED MY MECHANIC AND HE KNEW RIGHT AWAY WHAT WAS WRONG, HE SAID HE HAS SEEN QUITE A FEW OF THE 1999 PICKUPS WITH THE SAME CONDITION. AS A FRIEND HE LOOKED AT IT NO CHARGE. SAID IT WOULD BE AROUND $650.00 TO FIX. CALLED CHEVY DEALER AND THEY TOLD ME GM WOULD PAY HALF. I LAUGHED AND SAID THAT'S NOT GOOD ENOUGH. THEY ALSO WANTED $79.00 DIAGNOSTIC FEE. WHAT A JOKE. I WROTE A LETTER TO GM THEY DID NOT RESPOND. I CALLED ON THE PHONE AND GOT ALL THE WAY TO THE SECRETARY OF THE CHEVROLET DIVISION AND SHE WOULD NOT PUT ME THROUGH TO HIM. I'M NOW DRIVING WITH STANDARD BRAKES BUT MY CHILD DRIVE MY TRUCK FROM TIME TO TIME AND FEEL LIKE I'M NOT PROVIDING HIM WITH A SAFE VEHICLE AND I DONT HAVE THE MONEY TO FIX IT. *NM
ABS SYSTEMS HAS NEVER WORKED PROPERLY. ABS SYSTEMS CURRENTLY NON-FUNCTIONAL FACTORY RECALL CLEANED WHEEL SENSORS & REQUESTED $2000.00 TO REPAIR PROBLEM. *NM
1999 CHEVROLET SILVERADO ABS LIGHT ILLUMINATED MAKING A NOISE UNDER SEAT. *TS ***NAR*** THE ABS MOTOR WAS REPLACED. *JB
RECALLS CLAIMED TO BE DONE, I'VE NEVER TAKEN TRUCK IN FOR RECALLS. CHEVOLET REFUSES TO RELEASE WHERE RECALLS WERE COMPLETED AT. *NM
AFTER CHANGING ALL FOUR BRAKE ROTORS AND BRAKE PADS BECAUSE THEY WERE BADLY RUSTED, MY BRAKES FAILED SOON AFTER LEAVING HOME . A PIN HOLE LEAK DEVELOPED IN THE BRAKE LINE BECAUSE OF RUST. THE LEAK WAS IN A PLACE THAT WAS NOT ACCESSIBLE BY ME. I HAD TO HAVE THE VEHICLE TOWED TO A DEALER FOR REPAIRS. THEY FOUND FOUR BADLY RUSTE…
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AFTER CHANGING ALL FOUR BRAKE ROTORS AND BRAKE PADS BECAUSE THEY WERE BADLY RUSTED, MY BRAKES FAILED SOON AFTER LEAVING HOME . A PIN HOLE LEAK DEVELOPED IN THE BRAKE LINE BECAUSE OF RUST. THE LEAK WAS IN A PLACE THAT WAS NOT ACCESSIBLE BY ME. I HAD TO HAVE THE VEHICLE TOWED TO A DEALER FOR REPAIRS. THEY FOUND FOUR BADLY RUSTED BRAKE LINES AND REPLACED ALL FOUR AT A COST OF $953.16. THE TOWING CHARGES WERE COVERED BY MY ALLSTATE AUTO CLUB. I FORGET TO REQUEST THE OLD PARTS. I WAS FORTUNATE THE FAILURE OCCURRED SHORTLY AFTER LEAVING HOME AND DID NOT CAUSE AN ACCIDENT LIKE THE FAILURE OF THE RUSTED BRAKE LINE IN MY 1988 CHEVY TRUCK CAUSED. I REAR ENDED A CAR IN THAT INCIDENT. *JB
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.