NHTSA owner reports · September 18, 2026 snapshot.
Parking Brake complaints
29 reportsClear category filter110,000 miles · Sep 15, 2011
Parking BrakeService Brakes, Hydraulic
I LOST MY BRAKES COMPLETELY, LUCKILY I SUSPECTED A BRAKE LINE LEAKAGE DUE TO THE BRAKE FLUID NEEDING TO BE REFILLED PRIOR TO MY TRIP. THERE WAS CONFUSION AMONGST DRIVERS AHEAD OF ME MERGING ONTO THE HIGHWAY, EVERYONE GOT HARD ON THEIR BRAKES INCLUDING ME. MY ABS KICKED ON AND IMMEDIATELY THE LINE RUPTURED, I SAW A MIST OF BRAKE …
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I LOST MY BRAKES COMPLETELY, LUCKILY I SUSPECTED A BRAKE LINE LEAKAGE DUE TO THE BRAKE FLUID NEEDING TO BE REFILLED PRIOR TO MY TRIP. THERE WAS CONFUSION AMONGST DRIVERS AHEAD OF ME MERGING ONTO THE HIGHWAY, EVERYONE GOT HARD ON THEIR BRAKES INCLUDING ME. MY ABS KICKED ON AND IMMEDIATELY THE LINE RUPTURED, I SAW A MIST OF BRAKE FLUID IN THE DRIVERS SIDE MIRROR AND MY BRAKE PEDAL DROPPED TO THE FLOOR RENDERING MY BRAKES USELESS. I MISSED REAR ENDING THE PERSON IN FRONT OF ME BY INCHES. MY TRUCK IS CURRENTLY IN THE SHOP GETTING ALL OF THE BRAKE LINES REPLACED DUE TO THE FACT THAT THEY ARE ALL RUSTED FROM FRONT TO BACK AND DEEMED UNSAFE. *KB
NHTSA ODI #10425561
78,000 miles · Aug 6, 2011
Electrical SystemParking Brake
PARKING BRAKE IS NOT HOLDING AND WE HAVE USED IT MAYBE 2 OR 3 TIMES. ABS AND BRAKE LIGHTS STAY ON ALL THE TIME. WE HAVE A 2001 CHEVROLET SILVERADO 1500. I HAVE SEEN MANY COMPLAINTS ABOUT THIS ON THE ITERNET. CAN YOU NOT DO SOMETHING ABOUT THESE COMPLAINTS. *TT
NHTSA ODI #10417751
50,000 miles · Mar 10, 2011
Parking BrakeService Brakes, Hydraulic
HYDRAULIC BRAKE FAILURE. NHTSA ACTION NUMBER:PEO5020 WAS TOLD BY THE DEALER THIS WAS LIKELY THE "WHEEL SPEED SENSOR" AND REQUIRED A COMPLETE WHEEL BEARING REPLACEMENT AS THAT IS THE ONLY WAY THE "WHEEL SPEED SENSOR" COULD BE REPLACED. I BECAME SUSPICIOUS AFTER LOOKING AT THE "SERVICE ADVISORS" WRIT-UP WHICH WAS NOTHING LIKE I HA…
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HYDRAULIC BRAKE FAILURE. NHTSA ACTION NUMBER:PEO5020 WAS TOLD BY THE DEALER THIS WAS LIKELY THE "WHEEL SPEED SENSOR" AND REQUIRED A COMPLETE WHEEL BEARING REPLACEMENT AS THAT IS THE ONLY WAY THE "WHEEL SPEED SENSOR" COULD BE REPLACED. I BECAME SUSPICIOUS AFTER LOOKING AT THE "SERVICE ADVISORS" WRIT-UP WHICH WAS NOTHING LIKE I HAD DESCRIBED TO HIM OR THE MECHANIC AND NOTHING LIKE THEY HAD TOLD ME THE REPAIR WAS. WHEN CONFRONTING THE "SERVICE ADVISOR" ABOUT THE WAY IT WAS WRITTEN UP, HIS RESPONSE WAS "THIS WAS MY WAY OF WRITING IT UP". AFTER LOOKING UP THE NHTSA INFORMATION WHICH I PRINTED OUT, IT APPEARS THE MANUFACTURER WAS TO PAY FOR THE COMPLETE REPAIR. I WAS CHARGED BY THE DEALER FOR THE COMPLETE REPAIR. AFTER GETTING HOME I SEARCHED THE INTERNET FOR RECALLS AND HERE I AM - LOOKING FOR HELP IN THIS FRAUD BY THE DEALER. I AM NOW SUSPICIOUS THAT THEY MIGHT BE DOUBLE CHARGING - IE: CHARGE THE CUSTOMER AND ALSO CHARGE GM? ANOTHER REPAIR I HAD COMPLETED AT THE SAME TIME WAS A DEFECTIVE PARKING BRAKE - TOTAL FAILURE. NHTSA ACTION NUMBER: EAO4011 WAS TOLD BY THE DEALER MECHANIC THE LININGS WEAR EVEN WHEN THE PARKING BRAKE WAS NOT APPLIED. REQUIRED LININGS AND OTHER PART REPLACEMENT FOR WHICH I WAS ALSO CHARGED. IN THE RECALL VEHICLES I DID NOT SEE MY VEHICLE HOWEVER THE MECHANIC DESCRIBED THE CONDITION JUST AS THE RECALL NOTICE DESCRIBED IT SO I'M THINKING THIS VEHICLE MIGHT ALSO BE INCLUDED? THEY ALSO RECOMMENDED A BRAKE FLUSH - WHICH I HAD DONE AND NOW AM THINKING THIS MIGHT HAVE BEEN REQUIRED WHEN THE RECALL WORK WAS COMPLETED? I FIRST STARTED NOTICING THE PROBLEM (NHTSA ACTION NUMBER: PEO5020) WHEN PULLING INTO PARKING SPACES THIS WINTER HOWEVER DISMISSED IT AT FIRST THINKING I MAY HAVE BEEN ON ICE. I CAME VERY CLOSE TO SMASHING INTO A BLOCK WALL ON ONE OCCASION, A FENCE AND PARKING CURB ON OTHERS. THANKS. THANKS. *TR
NHTSA ODI #10389713
30,000 miles · Dec 15, 2010
Parking Brake
EMERGENCY BRAKE DOES NOT FUNCTION. *TR
NHTSA ODI #10370780
70,000 miles · Nov 5, 2008
Parking Brake
THE PARKING BRAKE CABLE BROKE, PREVENTING THE BRAKE RELEASE AND PREVENTING CAR FROM MOVING. WHEN I BOUGHT A NEW CABLE AT THE DEALER THE PARTS COUNTER MAN TOLD ME "IT IS COMMON FOR THESE TO BREAK". IF MY WIFE HAD BEEN OUT IN THE EVENING, SHE COULD HAVE BEEN IN A VERY DANGEROUS SITUATION. IF THIS IS "COMMON" I WOULD LIKE A RECALL …
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THE PARKING BRAKE CABLE BROKE, PREVENTING THE BRAKE RELEASE AND PREVENTING CAR FROM MOVING. WHEN I BOUGHT A NEW CABLE AT THE DEALER THE PARTS COUNTER MAN TOLD ME "IT IS COMMON FOR THESE TO BREAK". IF MY WIFE HAD BEEN OUT IN THE EVENING, SHE COULD HAVE BEEN IN A VERY DANGEROUS SITUATION. IF THIS IS "COMMON" I WOULD LIKE A RECALL SO THEY CAN ALL BE REPLACED WITH AN IMPROVED CABLE. *TR
NHTSA ODI #10247774
120,000 miles · Oct 12, 2008
Air BagsParking BrakeTiresCrashInjury
I WAS IN A CAR ACCIDENT. WHILE DRIVING, I DON'T KNOW WHAT HAPPENED BUT SOMETHING CAUSED MY TRUCK TO ROLL OVER. EARLIER THAT DAY I REMEMBER THAT MY PARKING BRAKE WOULD NOT WORK. I ALSO HAD SOME TROUBLE PUTTING THE GEAR INTO PARK. MY AIRBAGS DIDN'T DEPLOY DURING THIS ACCIDENT, AND I WAS DRIVING WITH CRUISE CONTROL ON IF THAT HAS A…
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I WAS IN A CAR ACCIDENT. WHILE DRIVING, I DON'T KNOW WHAT HAPPENED BUT SOMETHING CAUSED MY TRUCK TO ROLL OVER. EARLIER THAT DAY I REMEMBER THAT MY PARKING BRAKE WOULD NOT WORK. I ALSO HAD SOME TROUBLE PUTTING THE GEAR INTO PARK. MY AIRBAGS DIDN'T DEPLOY DURING THIS ACCIDENT, AND I WAS DRIVING WITH CRUISE CONTROL ON IF THAT HAS ANY BEARING ON THIS. ALSO, MY FRONT TIRES WERE ALWAYS NEEDING AIR. *TR
NHTSA ODI #10245168
100,400 miles · Jul 31, 2008
Parking Brake
TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO. THE CONTACT TOOK THE VEHICLE TO THE MECHANIC TO HAVE THE BRAKES REPAIRED. AS THE MECHANIC WAS CHANGING THE BRAKES THE MECHANIC NOTICE THAT THE PARKING BRAKES WERE WORN OUT. THE MECHANIC INFORMED THE CONTACT TO REPLACE THE PARK BRAKES ON THE VEHICLE DUE TO THE FACT THAT IF THE …
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TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO. THE CONTACT TOOK THE VEHICLE TO THE MECHANIC TO HAVE THE BRAKES REPAIRED. AS THE MECHANIC WAS CHANGING THE BRAKES THE MECHANIC NOTICE THAT THE PARKING BRAKES WERE WORN OUT. THE MECHANIC INFORMED THE CONTACT TO REPLACE THE PARK BRAKES ON THE VEHICLE DUE TO THE FACT THAT IF THE CONTACT APPLIES THE PARKING BRAKE THE VEHICLE CAN ROLL DOWN A HILL AND CAUSE A CRASH. CONTACT WAS INFORMED THAT THERE WAS A RECALL(05V161000) BUT IS UNSUCCESSFUL GETTING THE VEHICLE REPAIRED BECAUSE THE RECALL IS ONLY FOR MANUAL VEHICLE AND THE CONTACT OWN A AUTOMATIC. THE CURRENT AND FAILURE MILEAGES WERE 100,400.
NHTSA ODI #10236559
15,000 miles · Jan 13, 2008
Parking Brake
EMERGENCY (PARKING) BRAKES HAS NEVER WORKED ON MY VEHICLE. WHEN NEW I NOTED THAT IT WOULD GO COMPLETELY TO THE FLOOR WHEN ENGAGED BUT ASSUMED THAT IT WAS SIMPLY DIFFERENT THAN PAST EMERGENCY BRAKES. HOWEVER, I DISCOVERED LONG AGO THAT, WHEN ENGAGED ON A HILL IT SIMPLY HAD NO EFFECT! GIVEN THAT I HAVE AN AUTOMATIC TRANSMISSION…
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EMERGENCY (PARKING) BRAKES HAS NEVER WORKED ON MY VEHICLE. WHEN NEW I NOTED THAT IT WOULD GO COMPLETELY TO THE FLOOR WHEN ENGAGED BUT ASSUMED THAT IT WAS SIMPLY DIFFERENT THAN PAST EMERGENCY BRAKES. HOWEVER, I DISCOVERED LONG AGO THAT, WHEN ENGAGED ON A HILL IT SIMPLY HAD NO EFFECT! GIVEN THAT I HAVE AN AUTOMATIC TRANSMISSION I DO NOT BOTHER TO ENGAGE IT BUT, IF EVER NEEDED IN AN EMERGENCY SITUATION IT WOULD BE COMPLETELY USELESS. IT IS CLEARLY A FAULTY DESIGN. CHEVROLET SHOULD HAVE DONE SOMETHING ABOUT IT FOR ALL OWNERS, NOT JUST THOSE WITH MANUAL TRANSMISSIONS.. *TR
NHTSA ODI #10214666
Mileage unknown · Dec 17, 2007
Electrical SystemParking BrakeService Brakes, Hydraulic
PARKING BRAKE FAILURE - DESIGN FAULT. PER CHEVROLET DEALERSHIP AND INDEPENDENT MECHANIC THE PARKING BRAKE FAILURE TO ENGAGE IS DUE TO NOT USING THE PARKING BRAKE EACH TIME THE TRUCK IS PARKED. THIS IS A DESIGN FAULT AS A PART SHOULD NOT FAIL IF YOU USE IT ONLY AS NEEDED. CHEVROLET HAS A RECALL FOR THE 2001 SILVERADO MANUAL TRANS…
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PARKING BRAKE FAILURE - DESIGN FAULT. PER CHEVROLET DEALERSHIP AND INDEPENDENT MECHANIC THE PARKING BRAKE FAILURE TO ENGAGE IS DUE TO NOT USING THE PARKING BRAKE EACH TIME THE TRUCK IS PARKED. THIS IS A DESIGN FAULT AS A PART SHOULD NOT FAIL IF YOU USE IT ONLY AS NEEDED. CHEVROLET HAS A RECALL FOR THE 2001 SILVERADO MANUAL TRANSMISSION BUT HAS NOT RECALLED THE AUTOMATIC TRANSMISSION MODELS WITH THE SAME ISSUE. ABS BRAKES: ABS LIGHT GENERALLY COMES ON WHEN DRIVING THE TRUCK. CHEVROLET HAS A RECALL FOR THE ABS SYSTEM FAILURE ON THE 2001 SILVERADO BUT HAS LIMITED THE RECALL TO STATES WITH MORE EROSION (SALT) AND THEREFORE IS NOT FIXING THIS ISSUE IN TEXAS. ELECTRICAL SYSTEM - INSTRUMENT PANEL: THE INSTRUMENT PANEL DISPLAYS WARNING LIGHTS, E.G. ABS LIGHT, BRAKE LIGHT, ETC. INTERMITTENTLY. CHEVROLET HAS A RECALL ON THE 2001 CHEVROLET SILVERADO INSTRUMENT PANEL HOWEVER NOT FOR THIS VIN NUMBER. *TR
NHTSA ODI #10212096
104,000 miles · Nov 19, 2007
Parking Brake
TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE PARKING BRAKE WOULD NOT HOLD THE VEHICLE WHEN IT WAS APPLIED. THE MECHANIC STATED THAT THE VEHICLE'S DESIGN CAUSED THE PARKING BRAKE PADS TO RUB AGAINST THE DRUM. AS A RESULT, THE PARKING BRAKE WAS INEFFECTIVE IN IMMOBILIZING THE PARKED VEHICLE. …
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TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT THE PARKING BRAKE WOULD NOT HOLD THE VEHICLE WHEN IT WAS APPLIED. THE MECHANIC STATED THAT THE VEHICLE'S DESIGN CAUSED THE PARKING BRAKE PADS TO RUB AGAINST THE DRUM. AS A RESULT, THE PARKING BRAKE WAS INEFFECTIVE IN IMMOBILIZING THE PARKED VEHICLE. AS OF NOVEMBER 19, 2007, THE MECHANIC HAD NOT REPAIRED THE VEHICLE. THE MANUFACTURER STATED THAT HIS VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 05V161000 (PARKING BRAKE). THE CURRENT AND FAILURE MILEAGES WERE 104,000. UPDATED 3/5/09 *CN UPDATED 03/10/09. *JB
NHTSA ODI #10209312
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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