IllustrationI WAS BRAKING AT RED LIGHT BRAKE PEDAL WHEN TO FLOOR DID STOP AFTER I ALL READY WENT TROUGH RED LIGHT. *TR
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 complaints
126 reportsI WAS TRAVELING AT 48 MPH WHILE APPROACHING A STOP LIGHT WHEN I APPLIED THE BRAKES, THE PEDAL WENT ALL THE WAY TO THE FLOOR. I DID A QUICK HEAD CHECK AND HAD TO QUICKLY TURN INTO THE LEFT TURN LANE TO AVOID REAR ENDING THE CAR IN FRONT OF ME. I WAS VERY LUCKY TO BRING THE VEHICLE TO A STOP AFTER I CROSSED 3 FEET INTO THE INTERSE…
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I WAS TRAVELING AT 48 MPH WHILE APPROACHING A STOP LIGHT WHEN I APPLIED THE BRAKES, THE PEDAL WENT ALL THE WAY TO THE FLOOR. I DID A QUICK HEAD CHECK AND HAD TO QUICKLY TURN INTO THE LEFT TURN LANE TO AVOID REAR ENDING THE CAR IN FRONT OF ME. I WAS VERY LUCKY TO BRING THE VEHICLE TO A STOP AFTER I CROSSED 3 FEET INTO THE INTERSECTION WHERE A VEHICLE TRAVELING FROM THE WEST HAD TO SWERVE TO MISS THE PROTRUDING FRONT CLIP OF MY TRUCK. ONCE I GOT THE VEHICLE HOME, I PROCEEDED TO LOCATE THE PROBLEM, I FOUND IT WAS A SEVERELY RUSTED BRAKE LINE UNDER THE DRIVER SIDE DOOR GOING INTO THE ANTI-LOCK CONTROL MODUAL THAT HAD RUPTURED. AT THAT POINT I REALIZED THAT ALL THE BREAK LINES WERE IN THE SAME SEVERELY RUSTED CONDITION AND MUST BE REPLACED BEFORE TAKING THE VEHICLE BACK ON THE ROAD. I CANT BELIEVE THIS HAS BEEN UNDER INVESTIGATION SINCE EARLY 2012 & NOTHING HAS BEEN DONE TO CORRECT THIS SAFETY ISSUE. WHAT ELSE CAN I DO TO SPEED THE RESOLUTION UP? THIS NEEDS TO BE ADDRESSED BEFORE SOMEONE GETS BADLY INJURED OR KILLED!
I WAS TRAVELING AT 48 MPH WHILE APPROACHING A STOP LIGHT WHEN I APPLIED THE BRAKES, THE PEDAL WENT ALL THE WAY TO THE FLOOR. I DID A QUICK HEAD CHECK AND HAD TO QUICKLY TURN INTO THE LEFT TURN LANE TO AVOID REAR ENDING THE CAR IN FRONT OF ME. I WAS VERY LUCKY TO BRING THE VEHICLE TO A STOP AFTER I CROSSED 3 FEET INTO THE INTERSE…
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I WAS TRAVELING AT 48 MPH WHILE APPROACHING A STOP LIGHT WHEN I APPLIED THE BRAKES, THE PEDAL WENT ALL THE WAY TO THE FLOOR. I DID A QUICK HEAD CHECK AND HAD TO QUICKLY TURN INTO THE LEFT TURN LANE TO AVOID REAR ENDING THE CAR IN FRONT OF ME. I WAS VERY LUCKY TO BRING THE VEHICLE TO A STOP AFTER I CROSSED 3 FEET INTO THE INTERSECTION WHERE A VEHICLE TRAVELING FROM THE WEST HAD TO SWERVE TO MISS THE PROTRUDING FRONT CLIP OF MY BIG RED SILVERADRO TRUCK
WE WERE DRIVING DOWN THE ROAD AFTER APPLYING THE E-BRAKE AND SOMETHING SOUNDED LIKE IT WAS DRAGGING. WE TOOK THE TRUCK TO THE LOCAL SHOP AND WERE TOLD THAT THE BRAKE LINES THAT GO INTO THE ABS WERE RUSTED OUT AND CORRODED. WE HAD JUST REPLACED THE DRIVER'S SIDE BRAKE LINE IN FEBURARY OF THIS YEAR. I SEE THAT THIS IS A KNOWN PROB…
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WE WERE DRIVING DOWN THE ROAD AFTER APPLYING THE E-BRAKE AND SOMETHING SOUNDED LIKE IT WAS DRAGGING. WE TOOK THE TRUCK TO THE LOCAL SHOP AND WERE TOLD THAT THE BRAKE LINES THAT GO INTO THE ABS WERE RUSTED OUT AND CORRODED. WE HAD JUST REPLACED THE DRIVER'S SIDE BRAKE LINE IN FEBURARY OF THIS YEAR. I SEE THAT THIS IS A KNOWN PROBLEM FOR THIS YEAR TRUCK. WHY ISN'T CHEVY TAKING CARE OF IT???
THIS IS THE SECOND OF TWO INCIDENTS OF WHEN I WAS PULLING MY TRUCK OUT OF MY DRIVEWAY TO FIND I HAD NO BRAKES AS A RESULT OF CORRODED BRAKE LINES. BOTH INCIDENTS DID NOT RESOLVE IN AN ACCIDENT SINCE I AM AN AWARE DRIVER. BUT THE FACT THAT I HAVE HAD TO SEPARATE BRAKE LINES CORRODE THROUGH HAS ME NERVOUS TO DRIVE THE VEHICLE AS I…
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THIS IS THE SECOND OF TWO INCIDENTS OF WHEN I WAS PULLING MY TRUCK OUT OF MY DRIVEWAY TO FIND I HAD NO BRAKES AS A RESULT OF CORRODED BRAKE LINES. BOTH INCIDENTS DID NOT RESOLVE IN AN ACCIDENT SINCE I AM AN AWARE DRIVER. BUT THE FACT THAT I HAVE HAD TO SEPARATE BRAKE LINES CORRODE THROUGH HAS ME NERVOUS TO DRIVE THE VEHICLE AS I'M UNSURE WHEN IT COULD OCCUR. I AM HAVING ALL THE LINES REPLACED EVEN IF THE MECHANICS DON'T RECOMMEND IT. *TR
I WAS DRIVING DOWN THE HIGHWAY AND THE LIGHT TURNED RED. I PUSHED ON THE BRAKE AND THE PEDAL WENT TO THE FLOOR. I SWERVED AROUND A CAR AND RAN THROUGH THE LIGHT. LUCKILY NO ONE WAS GOING THROUGH IT AT THAT TIME. I THEN PULLED OVER AFTER I DOWN SHIFTED AND USED THE EMERGENCY BRAKE TO STOP. UPON INSPECTION, THE LINE WAS RUSTED TH…
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I WAS DRIVING DOWN THE HIGHWAY AND THE LIGHT TURNED RED. I PUSHED ON THE BRAKE AND THE PEDAL WENT TO THE FLOOR. I SWERVED AROUND A CAR AND RAN THROUGH THE LIGHT. LUCKILY NO ONE WAS GOING THROUGH IT AT THAT TIME. I THEN PULLED OVER AFTER I DOWN SHIFTED AND USED THE EMERGENCY BRAKE TO STOP. UPON INSPECTION, THE LINE WAS RUSTED THROUGH AND THE REST OF THEM WERE RIGHT BEHIND THE ONE THAT RUPTURED. GM SHOULD BE ASHAMED. THINK THEY'RE WAITING FOR SOMEONE TO DIE, IF THEY HAVEN'T ALREADY. *TR
I CAME UP TO A RED LIGHT, ENGAGED THE BRAKES AND THE BRAKE PEDAL SLOWLY WENT TO THE FLOOR. LUCKILY THERE WAS NOT A VEHICLE IN FRONT OF ME OR IN THE CROSS TRAFFIC, FOR I WAS NOT ABLE TO STOP UNTIL I WAS WELL THOUGH THE INTERSECTION. I WAS ABLE TO STOP SAFELY WITHOUT INJURY. LEFT REAR BRAKE LINE WAS RUSTED THROUGH. *TR
ON DRIVING MY VEHICLE, MY BRAKES SLOWLY SANK TO FLOOR, UPON PUMPING MY BRAKE WARNING LIGHT CAME ON, I PULLED OVER TO FIND BRAKE FLUID COMING FROM UNDER THE TRUCK, LOCATED UNDER THE DRIVER DOOR AREA. HAVING MY VEHICLE TOWED TO MY BROTHERS HOUSE WE NOTICED THAT THE BRAKE LINES WHERE RUSTED AND ROTTED, RIGHT BEFORE THEY GO INTO THE…
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ON DRIVING MY VEHICLE, MY BRAKES SLOWLY SANK TO FLOOR, UPON PUMPING MY BRAKE WARNING LIGHT CAME ON, I PULLED OVER TO FIND BRAKE FLUID COMING FROM UNDER THE TRUCK, LOCATED UNDER THE DRIVER DOOR AREA. HAVING MY VEHICLE TOWED TO MY BROTHERS HOUSE WE NOTICED THAT THE BRAKE LINES WHERE RUSTED AND ROTTED, RIGHT BEFORE THEY GO INTO THE ABS, MY VEHICLE HAS BEEN SITTING IN HIS DRIVEWAY SINCE THEN, I DO NOT HAVE THE MONEY FOR REPAIRS. *TR
I WAS SLOWING DOWN TO DRIVE AROUND A SHARP BEND, WHEN I PRESSED ON MY BRAKE PEDAL AND IT DROPPED TO THE FLOOR. I THEN DOWN SHIFTED, BUT COULD NOT STOP. BEFORE MY TRUCK PLUMMETED DOWN A WOODED HILL ( THE HILL BEING APPROX 50-60 YARDS LONG) I JUMPED FROM MY TRUCK, BUT GOT CAUGHT BETWEEN MY TRUCK AND A STATIONARY VEHICLE. I WAS THE…
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I WAS SLOWING DOWN TO DRIVE AROUND A SHARP BEND, WHEN I PRESSED ON MY BRAKE PEDAL AND IT DROPPED TO THE FLOOR. I THEN DOWN SHIFTED, BUT COULD NOT STOP. BEFORE MY TRUCK PLUMMETED DOWN A WOODED HILL ( THE HILL BEING APPROX 50-60 YARDS LONG) I JUMPED FROM MY TRUCK, BUT GOT CAUGHT BETWEEN MY TRUCK AND A STATIONARY VEHICLE. I WAS THEN CRUSHED, AS MY TRUCK PROCEEDED TO PLUMMET DOWN THE HILL. THIS ALL CAUSING THE STATIONARY CAR TO HAVE SCRAPES, AND A DENT WHERE MY BODY WAS, AND CAUSING SEVERE BRUISING, SWELLING AND ABRASIONS OF MY UPPER LEGS, HIPS, AND BUTTOCK, AND I WAS UNABLE TO WALK FOR 3 DAYS AFTER THE INCIDENT BECAUSE OF LEG WEAKNESS, EVERY TIME I WOULD PUT WEIGHT ON MY RIGHT LEG IT WOULD GIVE OUT, AND CAUSE A SEVERE SHOOTING PAIN UP MY LEG INTO MY LOWER BACK, AND WAS UNABLE TO WORK FOR A WEEK. *TR
I WAS LEAVING MY BARN, AND AS I WAS DRIVING DOWN THE DRIVEWAY I HIT MY BRAKES AND MY PEDAL DROPPED TO THE FLOOR. I WAS ONLY DRIVING APPROX 5 MPH SO MY TRUCK SLOWLY ROLLED TO A STOP, AS I THEN PUT THE TRUCK IN PARK, AND CALLED MY FRIEND WHO IS ALSO MY MECHANIC. *TR
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.