NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
14 reports105,000 miles · Aug 12, 2015
Service BrakesCrash
INITIALLY WE HAD THE BRAKES CHANGED, THEN WE TOOK IT TO THE REPAIR SHOP AND THEY WERE TEST DRIVING IT, AND TRIED TO STOP THE TRUCK, AND RAN INTO THE WELDER IN THE SHOP AND DESTROYED THE WELDER AND WRECKED THE FRONT BUMPER OF OUR TRUCK. WE THEN HAD THE BEARINGS WORKED ON. AFTER RESEARCHING ON THE INTERNET, I FOUND WHERE SOME TR…
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INITIALLY WE HAD THE BRAKES CHANGED, THEN WE TOOK IT TO THE REPAIR SHOP AND THEY WERE TEST DRIVING IT, AND TRIED TO STOP THE TRUCK, AND RAN INTO THE WELDER IN THE SHOP AND DESTROYED THE WELDER AND WRECKED THE FRONT BUMPER OF OUR TRUCK. WE THEN HAD THE BEARINGS WORKED ON. AFTER RESEARCHING ON THE INTERNET, I FOUND WHERE SOME TRUCKS WERE RECALLED FOR THIS PROBLEM OF THE ANTI LOCK BRAKE SYSTEM ENGAGING AT SLOW SPEEDS. OUR TRUCK HAS A VIBRATION IN THE BRAKE PEDAL WHEN TRYING TO STOP, BUT IT ONLY OCCURS AT THE FINAL STAGE OF STOPPING, AT SLOW SPEEDS. IT HAS OCCURED NUMEROUS TIMES, AND WITH NO WEATHER CONDITIONS ON THE ROAD.
NHTSA ODI #10748106
79,000 miles · Jun 1, 2011
Service Brakes, Electric
I PURCHASED A 2002 CHEV. K1500 5.3LITER 4X4 PICKUP IN OCT. 2010. ONCE I TOOK THE TRUCK HOME THE BRAKES STARTED ACTING UP. I CONTACT GM AND THEY ADVISED THE TRUCK HAD A RECALL ON THE ABS SYSTEM BUT THE RECALL HAD BEEN PERFORM ON THE TRUCK AND THEY COULD NOT DO ANY MORE FOR ME. I THOUGHT IF IT WAS A SAFETY PROBLEM THEY HAD TO FIX …
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I PURCHASED A 2002 CHEV. K1500 5.3LITER 4X4 PICKUP IN OCT. 2010. ONCE I TOOK THE TRUCK HOME THE BRAKES STARTED ACTING UP. I CONTACT GM AND THEY ADVISED THE TRUCK HAD A RECALL ON THE ABS SYSTEM BUT THE RECALL HAD BEEN PERFORM ON THE TRUCK AND THEY COULD NOT DO ANY MORE FOR ME. I THOUGHT IF IT WAS A SAFETY PROBLEM THEY HAD TO FIX THE PROBLEM. WHAT IS HAPPENING IS THE ABS SYSTEM IS KICKING IN AT LOW SPEED UNDER 10MPH. WHEN YOU ARE PULLING INTO A PARKING SPOT OR AT A CROSS WALK. AND THE TRUCK WILL TAKE TWICE THE DISTANCE TO STOP. THEY DO NOT THINK THEY ARE NEEDING TO DO ANYTHING WITH THE PROBLEM. BUT, THEY ARE DOING A DISSATISFACTION TO THE CONSUMER. I AM A EMPLOYEE AT A AUTO REPAIR SHOP. AND WE ARE SEEING 1 OR 2 A MONTH WITH THE SAME PROBLEM. I FEEL GM NEED TO STAND BEHIND THE PRODUCT AND THEY ARE NOT. IT IS GOING TO TAKE SOMEONE TO HAVE THE ABS BRAKE KICK IN AND RUN SOMEONE OVER. BEFORE THEY DO ANYTHING ABOUT IT. I FEEL THIS IS A PROBLEM THAT MAY NEED TO BE LOOK INTO VERY CLOSELY BECAUSE IT IS HAPPENING ON MORE THEN JUST THE TRUCKS. CARS AND SUV ARE ALSO HAVING THE SAME PROBLEMS. *TR
NHTSA ODI #10404058
146,939 miles · Sep 12, 2010
Service Brakes, Hydraulic
I OWN A 2002 SILVERADO 1500. SEVERAL MONTHS AGO I HAD PROBLEMS WITH THE ABS BRAKES KICKING IN AT ABOUT 5 MPH AND NEARLY CAUSING SEVERAL ACCIDENTS. AFTER SOME RESEARCH I WAS ABLE TO CLEAN THE ABS SENSORS AND MOUNTING AREAS AND ONCE AGAIN HAVE BRAKES. HOWEVER,NOW(SEPT. 2010) THE METAL BRAKE LINES UNDER THE DRIVERS DOOR RUSTED THRO…
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I OWN A 2002 SILVERADO 1500. SEVERAL MONTHS AGO I HAD PROBLEMS WITH THE ABS BRAKES KICKING IN AT ABOUT 5 MPH AND NEARLY CAUSING SEVERAL ACCIDENTS. AFTER SOME RESEARCH I WAS ABLE TO CLEAN THE ABS SENSORS AND MOUNTING AREAS AND ONCE AGAIN HAVE BRAKES. HOWEVER,NOW(SEPT. 2010) THE METAL BRAKE LINES UNDER THE DRIVERS DOOR RUSTED THROUGH AND NEARLY CAUSED AN ACCIDENT WITH 3 PEOPLE INSIDE,INCLUDING MY SON AND HIS 3 YEAR OLD SON. I AM HAVING IT TAKEN TO A GARAGE TO GET AN ESTIMATE FOR REPAIR. I HAVE HAD MANY VEHICLES, NONE OF WHICH HAVE HAD THESE PROBLEMS. *TR
NHTSA ODI #10355051
116,000 miles · Feb 19, 2010
Service Brakes, Hydraulic
THE ANTI-LOCK BRAKES KICK IN AT SLOW SPEEDS. THIS HAS ALMOST CAUSED ME TO WRECK. THEY ISSUED A RECALL FOR MY BRAKES, BUT ALL THEY DO IS CLEAN THE SENSOR, SO WHEN THEY GET DIRTY, THEY START DOING IT AGAIN. I CONTACTED MY CHEVY DEALER,AND HE SAID THEY COULD LOOK AT IT, MIGHT HAVE TO CHARGE ME THOUGH. *TR
NHTSA ODI #10312221
58,243 miles · Oct 26, 2008
Service Brakes, Hydraulic
STARTED OUT TO WORK ONE MORNING,TRUCK PERFORMED FINE. STOPPED FOR GAS RESTARTED TRUCK,NOTICED THAT BRAKE PEDAL WENT DOWN CONSIDERABLE AMOUNT FURTHER THAN NORMAL ,AND IT TOOK MORE FOOT PRESSURE TO STOP. CONTINUED TO WORK,WORKED,DROVE HOME. BY THE TIME I GOT HOME BRAKE PEDAL WENT TO FLOOR,AND HAD NO STOPPING POWER. NEXT MORNING CH…
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STARTED OUT TO WORK ONE MORNING,TRUCK PERFORMED FINE. STOPPED FOR GAS RESTARTED TRUCK,NOTICED THAT BRAKE PEDAL WENT DOWN CONSIDERABLE AMOUNT FURTHER THAN NORMAL ,AND IT TOOK MORE FOOT PRESSURE TO STOP. CONTINUED TO WORK,WORKED,DROVE HOME. BY THE TIME I GOT HOME BRAKE PEDAL WENT TO FLOOR,AND HAD NO STOPPING POWER. NEXT MORNING CHECKED BRAKE MASTER CYLINDER RESERVOIR ,IT WAS EMPTY. I THAN NOTICED PUDDLE OF FLUID UNDER DRIVERSIDE OF TRUCK. I CHECKED UNDER THE HOOD AND NOTICED TO MY SURPRISE RUST THROUGH ON THE STEEL BRAKE LINE. DEALER WAS CONTACTED WAS TOLD THEY WOULD LOOK AT IT. HAD TRUCK TOWED TO DEALER,SERVICE MANAGER WANTED GUARANTEE OF PAYMENT OF 40 DOLLARS AND CHANGE TO LOOK AT IT,TO CONFIRM WHAT I ALREADY KNEW THAT THE BRAKE LINES WERE RUSTED. THEY SAID THIS WAS NORMAL AND WOULD NOT TAKE ANY RESPONSIBILITY TO REPAIR IT,ONLY TO OFFER SMALL CREDIT TOWARDS PARTS,WHICH AMOUNTS TO NOTHING. I DON'T KNOW WHERE TO GO NOW ,AND ARE MAKING ARRANGEMENTS TO HAVE IT TOWED BACK HOME. *TR
NHTSA ODI #10246744
45,000 miles · Nov 30, 2007
Parking Brake
2002 CHEVROLET 1500 SILVERADO PICKUP 4 WHEEL DRIVE AUTOMATIC TRANSMISSION, PARKING BRAKE FAILS AND GOES TO FLOOR.........IT HAS NEVER BEEN USED AND DOES NOT WORK ...FAIL STATE INSPECTION.......DEFECTIVE DESIGN. *TR
NHTSA ODI #10210356
12,000 miles · Oct 1, 2007
Parking Brake
I RELIED ON THE PARKING BRAKE WHILE I WAS DOING SOME WORK. THE PARKING BRAKE FAILED TO HOLD, AND THE VEHICLE ROLLED. LUCKILY I NEARLY AVOIDED BEING STRUCK. FURTHER ANALYSIS SHOWS THAT THIS IS A PROBLEM ON ALL CHEVY AND GM PICKUP TRUCKS FOR 2002. THERE WAS A RECALL FOR THE VEHICLES WITH MANUAL TRANSMISSIONS, BUT NOT THOSE WIT…
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I RELIED ON THE PARKING BRAKE WHILE I WAS DOING SOME WORK. THE PARKING BRAKE FAILED TO HOLD, AND THE VEHICLE ROLLED. LUCKILY I NEARLY AVOIDED BEING STRUCK. FURTHER ANALYSIS SHOWS THAT THIS IS A PROBLEM ON ALL CHEVY AND GM PICKUP TRUCKS FOR 2002. THERE WAS A RECALL FOR THE VEHICLES WITH MANUAL TRANSMISSIONS, BUT NOT THOSE WITH AUTOMATIC TRANSMISSIONS. THE VEHICLES WITH AUTOMATIC TRANSMISSIONS HAVE THE EXACT SAME PROBLEM, BUT THE TRANSMISSION MUST BE RELIED ON TO HOLD THE VEHICLE. THE MANUFACTURER REFUSES PROVIDE THE UPGRADED PARKING BRAKE SYSTEM FOR THESE VEHICLES. THE PARKING BRAKE SYSTEM WAS REDESIGNED ON 2003 VEHICLES BECAUSE OF THIS PROBLEM. IN ORDER TO PROPERLY REVIEW THIS ISSUE, NHTSA NEEDS TO LOOK AT THE COMPLAINTS FOR ALL GM AND CHEVY PICKUP TRUCKS. YOU WILL SEE A MULTITUDE OF LISTINGS FOR PARKING BRAKE PROBLEMS. VEHICLES WITH AUTOMATIC TRANSMISSIONS SHOULD HAVE BEEN COVERED UNDER THE RECALL OF NHTSA 05V161000 AS THERE IS NO MECHANICAL DIFFERENCE BETWEEN THE PARKING BRAKE SYSTEMS ON THE MANUAL AND AUTOMATIC SYSTEMS. *TR
NHTSA ODI #10204571
73,000 miles · Jul 11, 2007
Service Brakes, Hydraulic
ABS PULSATED AT LOW SPEEDS AND DID NOT STOP, ALMOST CAUSING AN ACCIDENTS. HAD TO PULL ABS FUSE TO DISABLE IT. *AK
NHTSA ODI #10196044
43,500 miles · Aug 26, 2005
Service Brakes, Hydraulic
THE ABS BRAKE SYSTEM FAILS AT SLOW SPEEDS MAKING IT ALMOST IMPOSSIBLE TO STOP THE VEHICLE. THE FIRST TIME IT HAPPENED I NEARLY ENTERED A BUSY HIGHWAY AS I WAS UNABLE TO STOP PROMPTLY. AFTER A FEW DAYS IT HAPPENED AGAIN AND I NEARLY HIT A BUILDING AS I WAS TRYING TO STOP IN A PARKING SPACE. IT WAS OBVIOUS THAT THIS WAS A SAFE…
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THE ABS BRAKE SYSTEM FAILS AT SLOW SPEEDS MAKING IT ALMOST IMPOSSIBLE TO STOP THE VEHICLE. THE FIRST TIME IT HAPPENED I NEARLY ENTERED A BUSY HIGHWAY AS I WAS UNABLE TO STOP PROMPTLY. AFTER A FEW DAYS IT HAPPENED AGAIN AND I NEARLY HIT A BUILDING AS I WAS TRYING TO STOP IN A PARKING SPACE. IT WAS OBVIOUS THAT THIS WAS A SAFETY PROBLEM. HOWEVER THE AUTHORIZED REPAIR FACILITY WOULD NOT MAKE THE NECESSARY REPAIRS UNLESS I PAID THE BILL. THEY HAD TO CLEAN THE ABS SENSORS TO CORRECT THIS PROBLEM. *JB
NHTSA ODI #10134357
7,900 miles · Jan 2, 2005
Service Brakes, Hydraulic
PREMATURE WEAR ON ALL FOUR BRAKE ROTORS FOR THIS TRUCK. ROTORS COULD NOT BE TURNED ON FIRST BRAKE PAD CHANGE BECAUSE THEY WERE RUSTING FROM THE INSIDE OUT. THE METAL USED TO MANUFACTURE THESE ROTORS HAD TO BE OF INFERIOR QUALITY. BRAKE PADS WERE STILL FAIRLY GOOD ! *JB
NHTSA ODI #10104937
NHTSA investigations
4DP05009 · Parking Brake Failure
Opened Dec 20, 2005 · Closed May 31, 2006
Status: closed (inferred from source dates) · Parking Brake; Parking Brake:conventional; Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Additional source detail variants (3)
Parking Brake:conventional
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake:conventional:mechanical
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
Parking Brake
ODI'S REVIEW OF COMPLAINT DATA RECEIVED SINCE THE CLOSE OF EA04-011 REVEALED NO INDICATION THAT THE INVESTIGATION SHOULD BE RE-OPENED.MORE DETAILS CAN BE FOUND IN THE FEDERAL REGISTER NOTICE ENCLOSED IN THE DP05-009 PUBLIC FILE.ODI RESERVES THE RIGHT TO REOPEN THE INVESTIGATION IN THE FUTURE SHOULD CONDITIONS WARRANT.
EA04012 · Hydraulic Pump Failres
Opened Apr 30, 2004 · Closed Feb 28, 2005
Status: closed (inferred from source dates) · Service Brakes, Hydraulic:power Assist; Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Additional source detail variants (2)
Service Brakes, Hydraulic:power Assist
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
Steering:hydraulic Power Assist System
GM IS CONDUCTING A RECALL ON ALL SUBJECT VEHICLES BUILD BETWEEN MAY 1999 AND OCTOBER 14, 1999.SIGNIFICANT CHANGES WERE INCORPORATED INTO PRODUCTION IN EARLY OCTOBER 1999, AND VEHICLES BUILT AFTER THAT DATE HAVE LOWER WARRANTY FAILURE RATES.THE COMPLAINT AND WARRANTY DATA APPEAR TO SUPPORT THE EFFECTIVENESS OF THESE CHANGES. GM MADE ADDITIONAL CHANGES IN NOVEMBER 1999, FEBRUARY 2000, MAY 2001, AND FEBRUARY 2004.ODI WILL CONTINUE TO MONITOR THIS PROBLEM AND WILL TAKE FURTHER ACTION, IF WARRANTED, IN THE FUTURE.FOR FURTHER TECHNICAL DETAILS SEE THE ATTACHED ENGINEERING ANALYSIS REPORT.
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.
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