NHTSA owner reports · September 18, 2026 snapshot.
Service Brakes, Hydraulic complaints
237 reportsClear category filterMileage unknown · Oct 17, 2011
Service Brakes, Hydraulic
JUST BOUGHT THIS TRUCK USED LESS THAN A MONTH AGO, AND IT PASSED NYS INSPECTION WITH NO PROBLEMS (94,000 MI. ON IT). WAS DRIVING IN A PARKING LOT AND STOPPED TO BACK INTO A SPACE WHEN THE BRAKES WENT ALL THE WAY TO THE FLOOR. PARKED THE TRUCK AND OPENED THE HOOD TO VERIFY FLUID IN THE MASTER (OK) THEN LOOKED UNDER THE TRUCK AND …
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JUST BOUGHT THIS TRUCK USED LESS THAN A MONTH AGO, AND IT PASSED NYS INSPECTION WITH NO PROBLEMS (94,000 MI. ON IT). WAS DRIVING IN A PARKING LOT AND STOPPED TO BACK INTO A SPACE WHEN THE BRAKES WENT ALL THE WAY TO THE FLOOR. PARKED THE TRUCK AND OPENED THE HOOD TO VERIFY FLUID IN THE MASTER (OK) THEN LOOKED UNDER THE TRUCK AND FOUND A SMALL (BUT GROWING) PUDDLE OF BRAKE FLUID. WAS ABLE TO NURSE IT HOME (LOW SPEEDS, EBRAKE) AND JACK IT UP TO FIND THE LEAK. THE LEAK IS ONE OF THE 4 LINES ABOVE THE FRAME NEAR THE ANTILOCK CONTROL. TO MY SURPRISE ALL 4 LINES ARE VERY RUSTY AND ALL WILL NEED TO BE REPLACED. THIS WILL BE A MAJOR COST BUT MORE IMPORTANTLY THIS IS A BIG SAFETY ISSUE. THE LINES LOOK OK EVERYWHERE ELSE EXCEPT FOR THIS 2 FOOT SECTION WHERE THEY ARE BUNDLED AND RIDE ON TOP OF THE FRAME. I AM GLAD THIS DIDN'T HAPPEN AT SPEED OR IN AN EMERGENCY BRAKING SITUATION BUT IT MIGHT HAVE. *TR
NHTSA ODI #10430468
80,000 miles · Oct 13, 2011
Service Brakes, Hydraulic
BRAKE LINE RUPTURE ON 2000 CHEVY SILVERADO. BADLY RUSTED BRAKE LINES. *TR
NHTSA ODI #10430087
Mileage unknown · Oct 2, 2011
Service Brakes, Hydraulic
PARKED ON A HILL WITH BOAT ATTACHED. STARTED TRUCK AND BRAKE PEDAL WENT STRAIGHT TO FLOOR. COULD NOT MOVE TRUCK. BRAKE FLUID LEAKING ON EXHAUST. TRUCK HAD TO BE TOWED TO SHOP. RUSTED BRAKE LINE. *TR
NHTSA ODI #10428224
Mileage unknown · Sep 28, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET K1500 SUBURBAN. THE CONTACT STATED THAT THE BRAKE PEDAL WOULD VIBRATE WHENEVER THE BRAKES WERE APPLIED AND THE VEHICLE WOULD EXPERIENCE AND INCREASED STOPPING DISTANCE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VEHICLE WAS NOT INCLUDED IN THE RECALL ASS…
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TL* THE CONTACT OWNS A 2000 CHEVROLET K1500 SUBURBAN. THE CONTACT STATED THAT THE BRAKE PEDAL WOULD VIBRATE WHENEVER THE BRAKES WERE APPLIED AND THE VEHICLE WOULD EXPERIENCE AND INCREASED STOPPING DISTANCE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VEHICLE WAS NOT INCLUDED IN THE RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES: ANTILOCK). THE FAILURE MILEAGE WAS UNKNOWN AND THE CURRENT MILEAGE WAS 110,000.
NHTSA ODI #10427735
85,875 miles · Sep 24, 2011
Service Brakes, Hydraulic
FRONT BRAKE LINE RUSTED THRU. TRUCK HAD TO TOWED TO REPAIR SHOP. 8 FEET OF BRAKE LINE WAS REPAIRED. WHILE THE MECHANIC WAS UNDER THE TRUCK HE SAID THIS WAS ONLY THE START, ALL THE BRAKE LINES HAVE VERY HEAVY RUST. UPON INSPECTION BY ME, I SAW EXACTLY WHAT THE MECHANIC WAS STATING. I WAS DOING A SIMPLE U TURN ON MY STREET WHEN T…
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FRONT BRAKE LINE RUSTED THRU. TRUCK HAD TO TOWED TO REPAIR SHOP. 8 FEET OF BRAKE LINE WAS REPAIRED. WHILE THE MECHANIC WAS UNDER THE TRUCK HE SAID THIS WAS ONLY THE START, ALL THE BRAKE LINES HAVE VERY HEAVY RUST. UPON INSPECTION BY ME, I SAW EXACTLY WHAT THE MECHANIC WAS STATING. I WAS DOING A SIMPLE U TURN ON MY STREET WHEN THE BRAKES LET OUT. THERE WAS NO BRAKING AT ALL, THE PEDAL WAS TO THE FLOOR. IT WAS VERY LUCKY I WAS DOING LESS THAN 5 MPH. THE REPAIR AT THE SHOP COST ME $980.00. FOUR CALIPERS HAD TO BE REPLACED DUE TO HEAVY RUSTING. THIS TRUCK IS A MAINTAINED VEHICLE. YES I DO LIVE IN LONG ISLAND N.Y. WHERE THERE IS SNOW REMOVAL BUT I HAVE NEVER HAD THIS TYPE OF RUST ON ANY OF MY VEHICLES. I KEEP MANY OF MY VEHICLES FOR 15 YEARS DO TO THE LOW MILEAGE I PUT ON A VEHICLE. I HAVE NEVER HAD THIS MUCH RUST ON THEIR BRAKE LINES NOR HAVE I EVER HAD A BRAKE RUST THRU. IN ADDITION I WAS UNDER THE IMPRESSION THAT IF THE FRONT BRAKES WERE LOST YOU WOULD HAVE THE REAR BRAKES WORKING TO STOP THE VEHICLE. NOT SO ON THIS VEHICLE. THIS VEHICLE HAS LOTS OF RUST ON ALL ITS BRAKE LINES. DRIVE SAFETY IS AN ISSUE THAT CERTAINLY SHOULD BE ADDRESSED. THE TRUCK IS UNSAFE AND A CORRECTION RECALL SHOULD BE INSTITUTED. I UNDERSTAND NHTSA IS LOOKING INTO THIS ISSUE AS THOUSANDS OF THESE VEHICLES HAVE THIS PROBLEM. THIS PROBLEM IS A HUGE SAFETY CONCERN AS MANY PEOPLE DO KEEP THEIR VEHICLES FOR MANY YEARS, HOWEVER I DO READ THAT VEHICLES MUCH YOUNGER THAN MINE ALSO HAVE THIS PROBLEM. GM HAS A PROBLEM, THEY KNOW ABOUT IT AND THEY STAND BUY DOING NOTHING. YOU FOLKS (NHTSA ) NEED TO STEP IN AND CORRECT THIS DEADLY ISSUE. AS A SIDE NOTE,I DO NOT COMPLAIN ABOUT ANYTHING, BUT THIS SAFETY ISSUE HAS REALLY GOTTEN TO ME. I IF I AM INVOLVED IN AN ACCIDENT OR IF MY WIFE AND FAMILY ARE IN THIS TRUCK THE RAMIFICATIONS COULD BE ENORMOUS.[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10427002
102,000 miles · Sep 23, 2011
Service Brakes, Hydraulic
PULLING A TRAILER ,WENT TO HIT THE BRAKES AND THE BRAKE LINE BUSTED UNDERNEATH THE DRIVERS DOOR. *TR
NHTSA ODI #10426921
Mileage unknown · Sep 9, 2011
Service Brakes, Hydraulic
WHEN DRIVING THE ABS AND BRAKE WARNING LIGHTS WILL LIGHT UP. TOOK TRUCK TO A LOCAL MECHANIC AND HE PUT IT ON A COMPUTER AND THE COMPUTER GAVE A CODE THAT A RELAY IS BAD WHICH IS BUILT ONTO THE TRUCKS MAIN COMPUTER BOARD. NO WAY TO REPLACE IT EXCEPT TO REPLACE THE COMPUTER WHICH IS VERY EXPENSIVE AND THE DEALERSHIP HAS TO REPROGR…
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WHEN DRIVING THE ABS AND BRAKE WARNING LIGHTS WILL LIGHT UP. TOOK TRUCK TO A LOCAL MECHANIC AND HE PUT IT ON A COMPUTER AND THE COMPUTER GAVE A CODE THAT A RELAY IS BAD WHICH IS BUILT ONTO THE TRUCKS MAIN COMPUTER BOARD. NO WAY TO REPLACE IT EXCEPT TO REPLACE THE COMPUTER WHICH IS VERY EXPENSIVE AND THE DEALERSHIP HAS TO REPROGRAM IT. MECHANIC TOLD ME THAT WHEN ABS AND BRAKE LIGHTS COME ON THAT YOUR ABS BRAKES WILL BE DISABLED. TALKED TO A LOCAL CHEVROLET DEALERSHIP TO SEE IF THERE MAY HAVE BEEN A RECALL ON THIS PARTICULAR MATTER. THEY TOLD ME NO. NO RECALLS WILL BE ISSUED UNLESS IT IS A SAFETY ISSUE WHICH MORE THAN ONE VEHICLE HAVE BEEN REPORTED WITH THE SAME PROBLEM. I HAVE DID A LOT OF SEARCHING AND TALKED TO MANY MECHANICS AND THEY HAVE CAME ACROSS MANY SILVERADO AND TAHOE VEHICLES HAVING THIS SAME ISSUE. TO ME IT IS A SAFETY CONCERN BECAUSE PART OF YOUR BRAKE FUNCTION IS ENABLED. *TR
NHTSA ODI #10424497
82,660 miles · Sep 5, 2011
Service Brakes, Hydraulic
THE FIRST TIME I EXPERIENCED CATASTROPHIC BRAKE FAILURE I WAS TRAVELING AT A SLOW RATE OF SPEED IN MY CONDOMINIUM PARKING LOT. THE BRAKE PEDAL WENT TO THE FLOOR AND I HAD NO BRAKES. THE REPAIR WAS DONE AT MY INDEPENDENT GARAGE WHERE I HAVEA BEEN DEALING SINCE 1983. I WAS TOLD THAT THE BRAKE LINES HAD "ROTTED OUT." THEY REPL…
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THE FIRST TIME I EXPERIENCED CATASTROPHIC BRAKE FAILURE I WAS TRAVELING AT A SLOW RATE OF SPEED IN MY CONDOMINIUM PARKING LOT. THE BRAKE PEDAL WENT TO THE FLOOR AND I HAD NO BRAKES. THE REPAIR WAS DONE AT MY INDEPENDENT GARAGE WHERE I HAVEA BEEN DEALING SINCE 1983. I WAS TOLD THAT THE BRAKE LINES HAD "ROTTED OUT." THEY REPLACED 10 FEET OF BRAKE LINE. THE SECOND TIME I EXPERIENCE CATASTROPHIC BRAKE FAILURE WAS YESTERDAY, SEPTEMBER 4 WHILE APPROACHING A TRAFFIC LIGHT ABOUT 6:30 PM. FORTUNATELY THE TRAFFIC WAS LIGHT ON THE EARLY SUNDAY EVENING OF THE LABOR DAY HOLIDAY WEEKEND. BY DOWNSHIFTING THE AUTOMATIC TRANSMISSION TO 2ND AND THEN 1ST GEAR I WAS ABLE TO MAKE THE RIGHT-HAND TURN AT THE INTERSECTION ONTO THE BERM OF THE ROAD. EARLIER THAT DAY I HAD COME DOWN THE BLUE MOUNTAIN AT STERRET'S GAP IN PENNSYLVANIA. HAD THE FAILURE OCCURRED THEN I WOULDN'T BE ABLE TO REPORT IT. WITHIN THE PAST TWO WEEKS I HAVE TOWED MY BOAT ON THE PA TURNPIKE WITH THE TRUCK. GOD KNOWS HOW MANY PEOPLE WOULD HAVE DIED HAD THE FAILURE OCCURRED THEN. FORTUNATELY NO PEDESTRIAN WAS CROSSING THE STREET WHEN THE BRAKE FAILURE OCCURRED - THEY WOULD BE DEAD! THERE ARE REPEATED REPORTS ON THE INTERNET OF CATASTROPHIC BRAKE FAILURES ON THESE TRUCKS DUE TO BRAKE LINE CORROSION/ROT. IT IS TIME YOU FOLKS ACT. MY NEXT STEPS ARE: CONTACT MY REPRESENTATIVE, SENATORS, AND AN ATTORNEY. *TR
NHTSA ODI #10423774
65,717 miles · Aug 27, 2011
Service Brakes, Hydraulic
WHEN I STEPPED ON THE BRAKE PEDAL TO SHIFT FROM PARK TO REVERSE THE PEDAL WENT ALL THE WAY TO THE FLOOR. I EXITED THE VEHICLE AND SAW BRAKE FLUID COMING FROM UNDER THE DRIVERS SIDE FRAME NEAR THE DRIVERS DOOR. UPON FURTHER INVESTIGATION IT WAS APPARENT THAT ONE OF THE METAL BRAKE LINES HAD RUSTED AND RUPTURED. ALSO ALL OF THE OT…
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WHEN I STEPPED ON THE BRAKE PEDAL TO SHIFT FROM PARK TO REVERSE THE PEDAL WENT ALL THE WAY TO THE FLOOR. I EXITED THE VEHICLE AND SAW BRAKE FLUID COMING FROM UNDER THE DRIVERS SIDE FRAME NEAR THE DRIVERS DOOR. UPON FURTHER INVESTIGATION IT WAS APPARENT THAT ONE OF THE METAL BRAKE LINES HAD RUSTED AND RUPTURED. ALSO ALL OF THE OTHER BRAKE LINES APPEAR TO BE SEVERELY RUSTED. VEHICLE WAS TOWED AND AWAITING REPAIRS. IT APPEARS THAT THIS IS A WIDESPREAD SAFETY ISSUE WITH THESE MODEL TRUCKS AFTER READING THE NUMEROUS POSTS ABOUT IT.
NHTSA ODI #10423380
140,000 miles · Aug 26, 2011
Service Brakes, Hydraulic
TL* THE CONTACT OWNS A 2000 CHEVROLET SILVERADO 1500. THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH AND UPON ENGAGING THE BRAKE PEDAL, THE ANTI-LOCK BRAKE SYSTEM ACTIVATED WITHOUT WARNING. THE FAILURE RECURRED AT LOW SPEEDS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 140,000.
NHTSA ODI #10421625
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.
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