Illustration2001 GMC SIERRA 1500. CONSUMER WRITES IN REGARDS TO STEERING COMPONENT FAILURE. *LD THE CONSUMER STATED AMONTH AFTER PURCHASING THE VEHICLE THE STEERING GEAR BEGAN LEAKING. *JS
2002 GMC Sierra 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2002 GMC Sierra 1500 do not stand out strongly from the model-year median of 181.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 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
80–25K
2425–50K
3750–75K
3275–100K
33100–150K
19150K+
153 reports with mileage · 13 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. Review the 64 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
17 crash reports0 fire reports5 injury reports
Steering complaints
7 reportsTL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH THE CONTACT HEARD A CLANKING NOISE AND FELT A VIBRATION IN THE STEERING COLUMN. THE CONTACT STATED THAT THE VIBRATION AND THE SOUND WOULD OCCUR CONSTANTLY WHEN DRIVING AT LOW SPEEDS AND BECAME MORE NOTICEABLE WHEN DRIVING AT HIGHWAY SPEEDS. THE MANUFA…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE DRIVING APPROXIMATELY 5 MPH THE CONTACT HEARD A CLANKING NOISE AND FELT A VIBRATION IN THE STEERING COLUMN. THE CONTACT STATED THAT THE VIBRATION AND THE SOUND WOULD OCCUR CONSTANTLY WHEN DRIVING AT LOW SPEEDS AND BECAME MORE NOTICEABLE WHEN DRIVING AT HIGHWAY SPEEDS. THE MANUFACTURER AND DEALER WERE CONTACTED AND STATED THAT THERE WAS NOT A RECALL FOR THE FAILURE AND THEY COULD NOT PROVIDE ANY FURTHER ASSISTANCE. THE FAILURE WAS NEITHER DIAGNOSED NOR REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 10,000.
TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH IN RAINY WEATHER CONDITIONS AND PRESSURE WAS APPLIED TO THE BRAKE PEDAL, FOLLOWED BY AN ACTIVATION OF THE ANTI-LOCK BRAKE SYSTEM. THE FAILURE OCCURRED AT EXTREMELY LOW SPEEDS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATED THAT THE…
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TL*THE CONTACT OWNS A 2002 GMC SIERRA 1500. THE CONTACT WAS DRIVING APPROXIMATELY 5 MPH IN RAINY WEATHER CONDITIONS AND PRESSURE WAS APPLIED TO THE BRAKE PEDAL, FOLLOWED BY AN ACTIVATION OF THE ANTI-LOCK BRAKE SYSTEM. THE FAILURE OCCURRED AT EXTREMELY LOW SPEEDS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATED THAT THE FAILURE WAS CONTRIBUTED TO SEVERE CORROSION IN THE ANTI-LOCK BRAKE SENSOR. THERE WAS A PRIOR RECALL REPAIR UNDER NHTSA 07E106000 (WHEELS:CAP/COVER/HUB). HOWEVER, THE REMEDY FAILED TO CORRECT THE SAFETY RELATED DEFECT. THE VEHICLE HAS NOT BEEN REPAIRED FOR THE MALFUNCTION. THE FAILURE MILEAGE WAS 34,000. THE STEERING SHAFT WAS REPLACED. UPDATED 02/18/10
TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE MAKING A LEFT TURN THE STEERING COLUMN LOCKED WITHOUT PRIOR WARNING. AFTER COMPLETING THE TURN, SHE WAS ABLE TO UNLOCK THE STEERING COLUMN. SHE TOOK THE VEHICLE TO THE DEALERSHIP, AND SHE WAS IN THE PROCESS OF HAVING THE POWER STEERING GEAR BOX REPLACED . THE CURRENT MILEAGE W…
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TL* THE CONTACT OWNS A 2002 GMC SIERRA 1500. WHILE MAKING A LEFT TURN THE STEERING COLUMN LOCKED WITHOUT PRIOR WARNING. AFTER COMPLETING THE TURN, SHE WAS ABLE TO UNLOCK THE STEERING COLUMN. SHE TOOK THE VEHICLE TO THE DEALERSHIP, AND SHE WAS IN THE PROCESS OF HAVING THE POWER STEERING GEAR BOX REPLACED . THE CURRENT MILEAGE WAS 77,596. THE FAILURE MILEAGE WAS 77,483.
DT*: THE CONTACT STATED WHILE TURNING AT VARIOUS SPEEDS ON THE HIGHWAY, THERE WAS A THUMPING NOISE COMING FROM THE STEERING WHEEL COLUMN. THE VEHICLE WAS INSPECTED BY A DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT AND SHAFT PITMAN NEEDED TO BE REPLACED. AFTERWARDS, THE PROBLEM PERSISTED. THE VEHICLE WAS INSPECTED BY …
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DT*: THE CONTACT STATED WHILE TURNING AT VARIOUS SPEEDS ON THE HIGHWAY, THERE WAS A THUMPING NOISE COMING FROM THE STEERING WHEEL COLUMN. THE VEHICLE WAS INSPECTED BY A DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT AND SHAFT PITMAN NEEDED TO BE REPLACED. AFTERWARDS, THE PROBLEM PERSISTED. THE VEHICLE WAS INSPECTED BY THE DEALER WHO DETERMINED THE INTERMEDIATE STEERING SHAFT NEEDED TO BE LUBRICATED. THE MANUFACTURER WAS ALERTED, AND DETERMINED THE INTERMEDIATE STEERING SHAFT LUBRICATION WAS A PART OF GENERAL MAINTENANCE.
INTERMEDIATE STEERING SHAFT MAKES CLUNKING NOISE. FIRST REPAIRED ON 11-13-03. HAS BEEN REPAIRED FOUR OTHER TIMES. IS CURRENTLY AT DEALERSHIP BEING FIXED AGAIN ON 8-11-06. EACH TIME IT HAS BEEN IN FOR REPAIR, THE STEERING SHAFT HAS BEEN LUBRICATED. *NM
THE 2002 WAS IN NEED OF FRONT HUBS SINCE THEY WERE NOT REPLACED WHEN THEY SHOULD HAVE BEEN AT THE TIME THE FRONT DIFFERENTIAL WAS REBUILT. THIS CAUSED THE TRUCK TO HAVE EXCESSIVE FRONT WHEEL FRICTION, AND COMPROMISED THE BRAKING CHARACTERISTICS OF THE TRUCK. IT WAS DIFFICULT TO DRIVE, ESPECIALLY IN SNOW, AND THE FRONT WHEEL FR…
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THE 2002 WAS IN NEED OF FRONT HUBS SINCE THEY WERE NOT REPLACED WHEN THEY SHOULD HAVE BEEN AT THE TIME THE FRONT DIFFERENTIAL WAS REBUILT. THIS CAUSED THE TRUCK TO HAVE EXCESSIVE FRONT WHEEL FRICTION, AND COMPROMISED THE BRAKING CHARACTERISTICS OF THE TRUCK. IT WAS DIFFICULT TO DRIVE, ESPECIALLY IN SNOW, AND THE FRONT WHEEL FRICTION WOULD VARY BASED ON CHANGES IN SPEED, ROAD CONTOUR, TEMPERATURE, STEERING INPUT, THROTTLE INPUT, AND BRAKE INPUT. WHILE BRAKING THE TRUCK WOULD OFTEN PITCH SEVERELY TO ONE SIDE OR THE OTHER, THE ABS WOULD ACTIVATE ON DRY PAVEMENT. ON ONE OCCASION THE ABS ACTIVATED WHEN MY FOOT WAS OFF THE BRAKE. THE TRUCK WOULD ALSO SWAY FROM SIDE TO SIDE AT HIGHWAY SPEED AS THE FRICTION VARIED FROM SIDE TO SIDE. WHEN THE TRUCK WAS RETURNED TO ME ONCE FROM CULLIGAN GMC, THE POWER STEERING EFFORT HAD INCREASED GREATLY. THE CHARACTERISTICS OF THE REAR LOCKING DIFFERENTIAL HAD BEEN CHANGED. THE TRUCK WAS BACK TO THE DEALER, DAVID CADILLAC, MANY TIMES FOR THE SAME CONCERN WITH THE FRONT DIFFERENTIAL. ON ONE OCCASION THE TRUCK WAS RETURNED TO ME GUSHING GEAR LUBE FROM THE FRONT AXLE, ON ANOTHER IT WAS RETURNED TO ME WITH THE FRONT DIFFERENTIAL EMPTY. I WAS CHARGED FOR A 4 WHEEL ALIGNMENT WHEN ONLY 2 WHEELS CAN BE ALIGNED ON THIS TRUCK. THE WRONG OIL FILTER WAS INSTALLED, THE TRUCK WAS DRIVEN ABUSIVELY BY A DEALER EMPLOYEE (IT WAS RUN BEYOND MECHANICAL LIMITS WHILE COLD AS I STOOD IN THE PARKING LOT), AND WHEN I CALLED THE SERVICE ADVISER AFTER THE TRUCK HAD BEEN IN HIS SHOP FOR OVER A WEEK WITHOUT MY HEARING WHAT IT'S STATUS WAS, THE SERVICE PERSON SCREAMED AT ME ON THE PHONE "WHEN IT IS FINISHED I WILL CALL YOU!!!", AND HE SLAMMED THE PHONE DOWN. *NM
Official recalls
104V562000 · Equipment Adaptive/mobility
Nov 26, 2004
ON CERTAIN VANS EQUIPPED WITH SURE-LOK WHEELCHAIR SECUREMENT SYSTEMS, THE SPROCKET TEETH OF THE RETRACTOR ASSEMBLY IS OUT OF ALIGNMENT.
Consequence & remedy
Consequence: IN THE EVENT OF A VEHICLE CRASH, THE WHEELCHAIR MAY NOT BE ADEQUATELY SECURED POSSIBLY RESULTING IN INJURIES TO A WHEELCHAIR OCCUPANT.
Remedy: DEALERS WILL INSPECT AND REPLACE THE WHEELCHAIR SECUREMENT RETRACTORS AS NECESSARY. SURE-LOK WILL HANDLE THE REPAIRS FOR THIS CAMPAIGN. OWNERS SHOULD CONTACT SURE-LOCK AT 1-908-231-1804 OR MOBILITYWORKS AT 1-800-769-8267.
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.