NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
13 reportsClear category filterMileage unknown · Jun 21, 2013
Engine And Engine Cooling
RECENTLY TOOK CAR FOR BALANCING AND ROTATION AT NTB. THEY SAW OIL DIP WAS DRY AND WAS LOW OIL LEVEL. TOOK IT BACK TO SHOP WHO DID OIL CHANGE ONE MONTH AGO. THEY SAID OIL IS VAPORIZING. I DIDN'T UNDERSTAND HOW. TECH SHOWED ME BLACK SLUGGISH INSIDE TAIL PIPE SAYING THAT COULD BE BAD CATALYTIC CONVERTER AND IT COULD HAVE CAUSED…
Read full complaint
RECENTLY TOOK CAR FOR BALANCING AND ROTATION AT NTB. THEY SAW OIL DIP WAS DRY AND WAS LOW OIL LEVEL. TOOK IT BACK TO SHOP WHO DID OIL CHANGE ONE MONTH AGO. THEY SAID OIL IS VAPORIZING. I DIDN'T UNDERSTAND HOW. TECH SHOWED ME BLACK SLUGGISH INSIDE TAIL PIPE SAYING THAT COULD BE BAD CATALYTIC CONVERTER AND IT COULD HAVE CAUSED BECAUSE OF OIL BURNING INSIDE EXHAUST. I RESEARCHED ONLINE ABOUT THIS ISSUE AND DID FIND OUT THAT ALL GM & CHEVY OWNER HAVING THIS ISSUE WITH V8 ENGINE ON ANY LITER. SHOP REPLACED KNOCK SENSOR TWICE BUT STILL SERVICE ENGINE LIGHT CAME BACK ON. IT IS VERY EXPENSIVE REPAIR COST TO REPLACE BROKEN BOLTS ON MANIFOLD. I HOPE MANUFACTURE WILL FIX THIS ISSUE AS SOON AS POSSIBLE SO THAT CONSUMER DON'T HAVE TO GO THROUGH NOT PASSING STATE INSPECTION. *TR
NHTSA ODI #10520986
85,000 miles · Sep 21, 2012
Engine And Engine CoolingFuel System, GasolineStructure
THE PART OF THE FRAME THAT HOLDS UP THE GAS TANK AND CONNECTS TO THE SHOCK HAS ROTTED AWAY. I HAD TO REPLACE BOTH REAR LEAF SPRING SHACKLES DO TO RUST AS WELL AS THE LEFT REAR BRAKE LINE. THE REAR OF THE TRUCK IS RUSTING AWAY. I HAVE HAD TO REPLACE THE FUEL PUMP, THERE IS A KNOCK IN THE STEERING COLUMN THAT I HAVE HAD FIXED ONCE…
Read full complaint
THE PART OF THE FRAME THAT HOLDS UP THE GAS TANK AND CONNECTS TO THE SHOCK HAS ROTTED AWAY. I HAD TO REPLACE BOTH REAR LEAF SPRING SHACKLES DO TO RUST AS WELL AS THE LEFT REAR BRAKE LINE. THE REAR OF THE TRUCK IS RUSTING AWAY. I HAVE HAD TO REPLACE THE FUEL PUMP, THERE IS A KNOCK IN THE STEERING COLUMN THAT I HAVE HAD FIXED ONCE ALREADY, THE ENGINE HAS TICKING SOUND WHEN IDLING, AND THE A/C COMPRESSOR IS BROKEN. *TR
NHTSA ODI #10476723
Mileage unknown · Feb 13, 2012
Engine And Engine Cooling
EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS (4) MY LATE 2002 CHEVY Z71 DEVELOPED AN EXHAUST LEAK AND THE CATALYTIC CONVERTER STARTED BANGING AT IDLE OR AFTER PARKED. ENGINE HAS BLACK EXHAUST ON THE HEAD WHERE WE FOUND THE MAIN LEAK. SO, CARBON MONOXIDE HAS BEEN COMING INTO THE CAB AND THE ENGINE COMPARTMENT…
Read full complaint
EXHAUST MANIFOLD BOLTS BREAKING OFF LEAVING STUDS IN THE HEADS (4) MY LATE 2002 CHEVY Z71 DEVELOPED AN EXHAUST LEAK AND THE CATALYTIC CONVERTER STARTED BANGING AT IDLE OR AFTER PARKED. ENGINE HAS BLACK EXHAUST ON THE HEAD WHERE WE FOUND THE MAIN LEAK. SO, CARBON MONOXIDE HAS BEEN COMING INTO THE CAB AND THE ENGINE COMPARTMENT SEEMS HOTTER THAN NORMAL. WHEN CHECKING INTO THE ISSUE, I FOUND EVERY TRUCK IN OUR COMPANY FLEET HAS THIS SAME ISSUE AND OUR ASSOCIATES THAT HAVE PERSONAL TRUCKS DRIVING TO WORK CHECKED THEIRS AND THEY ALSO HAVE THE SAME ISSUE. FROM 1999 THRU 2008 YEARS. WHEN CONTACTING OUR LOCAL CHEVY DEALER, THEY ADVISED THEY HAD NEVER SEEN OR HEARD OF ANY ISSUES LIKE THIS. I FIND THAT HARD TO BELIEVE. EVERY PERSON I MENTION THIS TO, CHECKS THEIR TRUCK AND HAS THE SAME ISSUES WITH THE BROKEN BOLTS. THERE IS DEFINITELY A PROBLEM WITH THE EXHAUST MANIFOLD CONTRACTING AND EXPANDING TOO MUCH- CHEAP STEEL ATTACHED TO ALUMINUM HEADS APPEAR ON ALL OF THE V-8 TRUCK ENGINES. PLEASE LOOK INTO THIS AS A SAFETY ISSUE WITH HEAT AND CARBON MONOXIDE AS WELL AS THE COSTS TO REPAIR. *TR
NHTSA ODI #10447714
60,000 miles · Jan 17, 2012
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO Z71. THE CONTACT WAS DRIVING 15 MPH WHEN THE ENGINE BACK FIRED AND STALLED. THE CONTACT STATED THAT AN ABNORMAL KNOCKING WAS HEARD DURING THE FAILURE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHERE THE MECHANIC CONFIRMED THERE WAS CARBON BUILD-UP AROUND THE PISTONS AND ADVISED T…
Read full complaint
TL* THE CONTACT OWNS A 2002 CHEVROLET SILVERADO Z71. THE CONTACT WAS DRIVING 15 MPH WHEN THE ENGINE BACK FIRED AND STALLED. THE CONTACT STATED THAT AN ABNORMAL KNOCKING WAS HEARD DURING THE FAILURE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHERE THE MECHANIC CONFIRMED THERE WAS CARBON BUILD-UP AROUND THE PISTONS AND ADVISED THAT THE ENGINE NEEDED TO BE REPLACED. THE MANUFACTURER WAS CONTACTED BUT THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 70,000.
NHTSA ODI #10444092
131,500 miles · Mar 1, 2010
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500 HD. THE CONTACT WAS DRIVING APPROXIMATELY BETWEEN 45-50 MPH ON NORMAL ROAD CONDITIONS. THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE RESTARTED AFTER WAITING 10-15 MINUTES. THE VEHICLE RESUMED NORMAL OPERATION. THERE WAS A SEPARATE OCCASION THE VEHICLE EXPERIENCED THE IDENTIC…
Read full complaint
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500 HD. THE CONTACT WAS DRIVING APPROXIMATELY BETWEEN 45-50 MPH ON NORMAL ROAD CONDITIONS. THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE RESTARTED AFTER WAITING 10-15 MINUTES. THE VEHICLE RESUMED NORMAL OPERATION. THERE WAS A SEPARATE OCCASION THE VEHICLE EXPERIENCED THE IDENTICAL FAILURE. THE VEHICLE HAS NOT BEEN INSPECTED FOR THE MALFUNCTION AT THIS TIME. THE FAILURE MILEAGE WAS 131,500. UPDATED 04/20/2010. *LJ UPDATED 09/21/10
NHTSA ODI #10315133
98,000 miles · Mar 23, 2009
Engine And Engine CoolingPower Train
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED SEVERAL ISSUES WITH HIS VEHICLE AND TOOK IT TO AN INDEPENDENT MECHANIC FOR REPAIR. WHEN HE TOOK THE RECEIPT FOR THE REPAIR TO THE DEALER, THEY REFUSED TO SPEAK WITH HIM. THE DEALER CLAIMED TO HAVE CALLED THE MANUFACTURER AND WAS INFORMED THAT THEY WE…
Read full complaint
TL*THE CONTACT OWNS A 2002 CHEVROLET SILVERADO 1500. THE CONTACT EXPERIENCED SEVERAL ISSUES WITH HIS VEHICLE AND TOOK IT TO AN INDEPENDENT MECHANIC FOR REPAIR. WHEN HE TOOK THE RECEIPT FOR THE REPAIR TO THE DEALER, THEY REFUSED TO SPEAK WITH HIM. THE DEALER CLAIMED TO HAVE CALLED THE MANUFACTURER AND WAS INFORMED THAT THEY WERE NOT RESPONSIBLE FOR THE REPAIR CHARGES BECAUSE THE VEHICLE WAS SERVICED BY AN INDEPENDENT MECHANIC. THE REAR END SEAL, TRANSMISSION COLLAR, INTAKE GASKET, THEUPDATED 04-20-09 *BF HEAD GASKET ON THE ENGINE, AND THE CATALYTIC CONVERTER WERE ALL REPLACED. THE FAILURE MILEAGE WAS 98,000.
NHTSA ODI #10262750
74,729 miles · Feb 17, 2009
Engine And Engine Cooling
1. FOUND NEEDLE BEARINGS IN OIL DURING ROUTINE OIL CHANGE. 2. WAS TOLD ROCKER ARMS WERE FAILING, VEHICLE HAD ABOUT 75,000 MILES ON IT. 3. REPLACED ALL ROCKER ARMS, CLEANED OUT HEADS, REMOVED ENGINE OIL PAN CLEANED AND REMOVED ALL MATERIAL. *TR
NHTSA ODI #10259145
63,000 miles · Jul 11, 2007
Engine And Engine Cooling
NORMAL DRIVING A T63000 MILES AND CHECK ENGINE LIGHT CODE P0340 FOR (CAMSHAFT SENSOR CIRCUIT MALFUNCTIONED. AN INDDEPENDENT REPAIR SHOP LOCATED A PROBLEM WITH THE DISTRIBUTOR DRIVER GEAR HAVING EXSESSIVE WEAR. GEAR KIT WAS PURCHASE FROM DEALER AND INSTALLED. REPAIR SHOP INDICATED THE GEAR KIT HAD AN ADDITIONAL SPACER WHICH…
Read full complaint
NORMAL DRIVING A T63000 MILES AND CHECK ENGINE LIGHT CODE P0340 FOR (CAMSHAFT SENSOR CIRCUIT MALFUNCTIONED. AN INDDEPENDENT REPAIR SHOP LOCATED A PROBLEM WITH THE DISTRIBUTOR DRIVER GEAR HAVING EXSESSIVE WEAR. GEAR KIT WAS PURCHASE FROM DEALER AND INSTALLED. REPAIR SHOP INDICATED THE GEAR KIT HAD AN ADDITIONAL SPACER WHICH WAS NOT ON THE DISTRIBUTOR ORGINIALLY, THIS SOUNDS LIKE A DESIGN FLAW. CODE WAS CLEARED AND HAS NOT RETURNED. I HAVE THE OLD GEAR.*AK
NHTSA ODI #10196064
990 miles · Sep 6, 2006
Engine And Engine Cooling
DT*: THE CONTACT STATED AN OIL PUDDLE WAS NOTICED UNDER THE VEHICLE WHILE PARKED IN THE DRIVEWAY ON 3 OCCASIONS. THE DEALER WAS CONTACTED AND REPLACED THE OIL PAN GASKET. THE 2ND TIME AN OIL PUDDLE WAS FOUND, THE VEHICLE WAS TAKEN TO THE DEALER WHO FOUND AN OIL LEAK IN THE CRANKCASE SENSOR. THE DEALER REPLACED THE OIL PAN GAS…
Read full complaint
DT*: THE CONTACT STATED AN OIL PUDDLE WAS NOTICED UNDER THE VEHICLE WHILE PARKED IN THE DRIVEWAY ON 3 OCCASIONS. THE DEALER WAS CONTACTED AND REPLACED THE OIL PAN GASKET. THE 2ND TIME AN OIL PUDDLE WAS FOUND, THE VEHICLE WAS TAKEN TO THE DEALER WHO FOUND AN OIL LEAK IN THE CRANKCASE SENSOR. THE DEALER REPLACED THE OIL PAN GASKET & INSTALLED OIL PRESSURE UNIT ON 09/23/04. ON 09/05/06, THE VEHICLE WAS TAKEN IN FOR A RECALL, AND THE DEALER DETERMINED THAT THE OIL PAN GASKET NEEDED TO BE REPLACED A THIRD TIME.
NHTSA ODI #10167438
Mileage unknown · Feb 2, 2006
Engine And Engine Cooling
THIS VEHICLE HAD A DEFECTIVE DISTRIBUTOR CAP. WHILE ATTEMPTING TO START IT THE ENGINE JERKED SEVERAL TIMES CAUSING THE ENGINE BLOCK TO CRACK WHERE THE STARTER IS MOUNTED. THE DEALER FIRST REPLACED THE ORIGINAL CAP WITH ANOTHER DEFECTIVE CAP. WHEN THEY REPLACED IT THE SECOND TIME, I WAS INFORMED THAT THE BLOCK WAS CRACKED AND…
Read full complaint
THIS VEHICLE HAD A DEFECTIVE DISTRIBUTOR CAP. WHILE ATTEMPTING TO START IT THE ENGINE JERKED SEVERAL TIMES CAUSING THE ENGINE BLOCK TO CRACK WHERE THE STARTER IS MOUNTED. THE DEALER FIRST REPLACED THE ORIGINAL CAP WITH ANOTHER DEFECTIVE CAP. WHEN THEY REPLACED IT THE SECOND TIME, I WAS INFORMED THAT THE BLOCK WAS CRACKED AND THEY COULD NOT FIX IT. *NM
NHTSA ODI #10149292
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.
Illustration