IllustrationDT*: THE CONTACT STATED WHILE DRIVING 40 MPH, A SNAPPING NOISE WAS HEARD AND THE DRIVER SEAT FELL HARD TO THE RIGHT. THE VEHICLE WAS DRIVEN TO THE DEALER, WHO DETERMINED THE BRACKET USED TO SECURE THE SEAT TO THE VEHICLE NEEDED TO BE REPLACED. UPDATED 12/18/06. *JB
1999 Chevrolet Silverado 1500
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1999 Chevrolet Silverado 1500 do not stand out strongly from the model-year median of 525.
About this comparison →How this year compares
Owner complaints by model year
Compare all Silverado 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
130–25K
3725–50K
6150–75K
6275–100K
141100–150K
104150K+
418 reports with mileage · 169 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, Hydraulic. Review the 222 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 126 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Structure. Review the 53 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
43 crash reports5 fire reports18 injury reports
What owners actually said
587 reportsMY 1999 CHEVY SILVERADO 1500 4WD VEHICLE WOULD LURCH AND STALL AS IF IT WEREN'T GETTING ENOUGH FUEL. THE FUEL FILTER WAS REPLACED AND 2 HOURS LATER THE SAME SYMPTOMS OCCURRED. EVENTUALLY THE FUEL PUMP AND INJECTORS #7 & #8 WERE REPLACED AT A COST OF $1413.84. THREE WEEKS LATER THE SAME SYMPTOMS OCCURRED. IT HAS BEEN DETERMIN…
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MY 1999 CHEVY SILVERADO 1500 4WD VEHICLE WOULD LURCH AND STALL AS IF IT WEREN'T GETTING ENOUGH FUEL. THE FUEL FILTER WAS REPLACED AND 2 HOURS LATER THE SAME SYMPTOMS OCCURRED. EVENTUALLY THE FUEL PUMP AND INJECTORS #7 & #8 WERE REPLACED AT A COST OF $1413.84. THREE WEEKS LATER THE SAME SYMPTOMS OCCURRED. IT HAS BEEN DETERMINED THAT THE FUEL LINE IS RUSTED OUT & THERE WAS A TSB #000604024; HOWEVER, WE WERE NEVER NOTIFIED OF THIS. REPLACEMENT OF THE FUEL LINE ETC. IS NOW ESTIMATED TO COST ANOTHER $1500.00. WE WILL BE ASKING FOR THE OLD FUEL LINE AS PROOF OF THE RUST THAT CAUSED THIS PROBLEM. *JB
DT*: THE CONTACT STATED BOTH ABS BRAKE WARNING LIGHTS ILLUMINATED WHEN THE VEHICLE WAS STARTED. WHEN THE VEHICLE WAS TURNED OFF, THERE WAS A CLICKING SOUND, SO A WIRE WAS DISCONNECTED FROM THE ABS SYSTEM. WHEN RESTARTED, THE WARNING LIGHTS REMAINED ILLUMINATED. THE SERVICE DEALER AND MANUFACTURER WERE NOTIFIED. THE CONSUMER …
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DT*: THE CONTACT STATED BOTH ABS BRAKE WARNING LIGHTS ILLUMINATED WHEN THE VEHICLE WAS STARTED. WHEN THE VEHICLE WAS TURNED OFF, THERE WAS A CLICKING SOUND, SO A WIRE WAS DISCONNECTED FROM THE ABS SYSTEM. WHEN RESTARTED, THE WARNING LIGHTS REMAINED ILLUMINATED. THE SERVICE DEALER AND MANUFACTURER WERE NOTIFIED. THE CONSUMER STATED THE SEAT BELTS TIGHTEN UP AT TIMES AND WON'T RELEASE, UNLESS THEY ARE UNBUCKLED. UPDATED 12/01/06. *JB
I HAVE A 1999 CHEVY SILVERADO. LAST WEEK I WENT TO THE CHEVY DEALERSHIP AND HAD THEM FIX THE WHEEL SPEED SENSOR UNDER THE RECALL FOR THE ABS ACTIVATION. I TOLD THEM THAT I PULLED THE FUSE FOR THE ABS MOTOR A WHILE BACK AND I DIDN'T HAVE A REPLACEMENT. TO MY SURPRISE, HE SAID THAT FIXING THE WHEEL SPEED SENSOR WOULD NOT FIX THE A…
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I HAVE A 1999 CHEVY SILVERADO. LAST WEEK I WENT TO THE CHEVY DEALERSHIP AND HAD THEM FIX THE WHEEL SPEED SENSOR UNDER THE RECALL FOR THE ABS ACTIVATION. I TOLD THEM THAT I PULLED THE FUSE FOR THE ABS MOTOR A WHILE BACK AND I DIDN'T HAVE A REPLACEMENT. TO MY SURPRISE, HE SAID THAT FIXING THE WHEEL SPEED SENSOR WOULD NOT FIX THE ABS PROBLEM I WAS HAVING. HE SAID THIS WITHOUT ANY DETAILS AS TO WHY I PULLED THE FUSE. HE SAID THAT THE PROBLEM WAS THE ABS MOTOR. HE SAID THAT THE CIRCUIT PACKS WITHIN THE MOTOR ARE SHORTED AND THE MOTOR WOULD HAVE TO BE REPLACED. IT SEEMED LIKE HE HAS SEEN THIS PROBLEM MANY TIMES BEFORE. EVEN SEEMED ANNOYED WHEN I ASKED FURTHER ABOUT IT. I GOT THE FEELING THAT HE HAS TO ANSWER QUESTIONS ABOUT THIS ALL THE TIME. EVERYONE I KNOW WITH THIS SAME VEHICLE IS HAVING THE SAME PROBLEM. THE MECHANIC I USE TO GO TO TOLD ME THAT HE SEES THIS PROBLEM ALL THE TIME ON CHEVY'S AND GMS FROM AROUND 1999. HE OWNS A 2000 GM SIERRA AND IS HAVING THE SAME PROBLEM. GM PUT OUT A RECALL FOR THE ABS, BUT ARE NOT FIXING THE PROBLEM COMPLETELY. CHEVY DEALERSHIP TOLD ME IT WOULD COST ABOUT $800.00 TO REPLACE THE MOTOR. I FEEL LIKE GM TOOK THE CHEAP WAY OUT BY FIXING THE WHEEL SPEED CENSOR. IS EVERYONE ELSE WITH THIS PROBLEM BEING FOOLED THINKING THAT THEIR ABS PROBLEM IS GOING TO BE FIXED WITH THIS RECALL THAT IS CURRENTLY OUT? WHY IS GM CONCERNED ABOUT ONE SAFETY ISSUE (THE CHEAP ONE) AND NOT ANOTHER (THE EXPENSIVE ONE)? *NM
ENGINE CUT OFF WHILE DRIVING, FAILURE TO START - FIRST IGNITION WILL CLICK,SOMETIMES STARTER WILL TURN OVER, MOST TIMES NOT, WILL NOT START. DASH GAUGES ARE ALSO ALL OVER THE PLACE ,WHEN AND IF IT STARTS,RUN REALLY ROUGH. ABS PROBLEMS TOO, DELAYED BRAKING ACTION AT LOW SPEED. *NM
1999 CHEVROLET SUBURBAN K1500. HAVE SMELLED COOLANT LEAK FOR SOME TIME. RECENTLY NOTICED THAT THE COOLANT RESERVOIR WAS NOT HOLDING FLUID. WENT TO LOCAL SHOP TO HAVE VEHICLE SERVICED FOR LEAK. THEY REPORTED THAT THERE IS A SIGNIFICANT LEAK BETWEEN THE MANIFOLD AND THE COOLANT INTAKE LINE. THE SAID THAT THIS IS A DEALER SERVICE I…
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1999 CHEVROLET SUBURBAN K1500. HAVE SMELLED COOLANT LEAK FOR SOME TIME. RECENTLY NOTICED THAT THE COOLANT RESERVOIR WAS NOT HOLDING FLUID. WENT TO LOCAL SHOP TO HAVE VEHICLE SERVICED FOR LEAK. THEY REPORTED THAT THERE IS A SIGNIFICANT LEAK BETWEEN THE MANIFOLD AND THE COOLANT INTAKE LINE. THE SAID THAT THIS IS A DEALER SERVICE ITEM, AND PROBABLY QUITE EXPENSIVE, BECAUSE ENGINE MUST BE TORN DOWN. REPAIR SHOP SAID THAT THIS IS A COMMON PROBLEM WITH SUBURBAN VEHICLE BECAUSE OF DISPARATE METAL USAGE BETWEEN COOLANT SYSTEM AND ALUMINUM ENGINE BLOCK. *NM
I HAVE A 1999 CHEVROLET SILVERADO PICK UP TRUCK THAT THE BRAKE LINES HAVE CORRODED AND FAILED RENDERING THE BRAKES USELESS. FORTUNATELY, THIS HAPPENED IN MY DRIVEWAY AND NOT ON THE HIGHWAY. I HAVE HAD TO HAVE ALL THESE LINES REPLACED. THIS TRUCK IS ONLY 7 YEARS OLD AND MY SERVICE GARAGE HAS STATED TO ME THAT THEY REPLACE BRAKE…
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I HAVE A 1999 CHEVROLET SILVERADO PICK UP TRUCK THAT THE BRAKE LINES HAVE CORRODED AND FAILED RENDERING THE BRAKES USELESS. FORTUNATELY, THIS HAPPENED IN MY DRIVEWAY AND NOT ON THE HIGHWAY. I HAVE HAD TO HAVE ALL THESE LINES REPLACED. THIS TRUCK IS ONLY 7 YEARS OLD AND MY SERVICE GARAGE HAS STATED TO ME THAT THEY REPLACE BRAKE LINES ON LATE MODEL CHEVROLET TRUCKS AT LEAST ONCE A MONTH. I HAVE WRITTEN CHEVROLET ABOUT THIS PROBLEM AND I DID NOT RECEIVED A RESPONSE. I BELIEVE THERE IS A SERIOUS PROBLEM WITH THE BRAKE LINE MATERIAL OR MANUFACTURE OF THESE ITEMS. *NM
DT*: THE CONTACT STATED THE ABS LIGHT ILLUMINATED INTERMITTENTLY AND THE VEHICLE REQUIRED EXCESSIVE STOPPING DISTANCE. THE DEALERSHIP REPLACED THE WHEEL SENSOR, BUT THE PROBLEM PERSISTED. THERE WAS AN NHTSA RECALL, #05V379000, REGARDING THE ANTILOCK BRAKES. THE VEHICLE WAS NOT INCLUDED IN THE RECALL DUE TO THE VIN.
ABS LIGHT COMING ON. MAY GO A WEEK BEFORE IT COMES ON OR THE NEXT TIME I START THE TRUCK UP NO PATTERN BRAKES STILL WORK , 99 SILVERADO. *NM
I NOTICED PRESSING THE BRAKES AT SLOW SPEED THE BRAKES BECAME SOFT AND THE ABS SYSTEM KICKED IN. THERE IS A RECALL FOR THIS EXACT THING IN CERTAIN STATES BUT NOT MINE AND I AM BEING TOLD I HAVE TO PAY 800$ TO REPAIR IT. *JB
Official recalls
0No recalls in this snapshot.
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.