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2003 Chevrolet Silverado

2003 Defect Investigations

There are also 13 Chevrolet recalls » 19 defect investigations » 548 TSBs » for the Chevrolet Silverado.

NHTSA Defect Investigation #EA04005

TAILGATE CABLE BREAKAGE: Latches/Locks/Linkages:Tailgate:Latch**

** This defect investigation is filed under 6 related vehicle components.
2003 CHEVROLET SILVERADO -- General Motors filed a defect notice 04V-129 on March 17, 2004, which outlines a program to replace the tailgate cables installed in affected model year 2000-2004 vehicles.refer to ODI's closing report for EA04-005 for additional information.ODI is aware of reports of tailgate cable breakage occurring in model year 1999 and earlier vehicles.these vehicles were equipped with similar tailgate cables as addressed by 04V-129, but are not being addressed by campaign O4V-129.ODI is initiating a separate investigation to address these vehicles.the complaint-injury-fatality statistics summarized above pertain to model year 2000-2004 vehicles. The complaint-injury statistics for model year 1999 and earlier vehicles are summarized on the opening resume for that investigation. Investigation was initiated on February 19 2004. Closed on September 28 2004. For detailed information & supporting documents, see the official NHTSA page concerning investigation #EA04005 »

NHTSA Defect Investigation #PE03057

PARKING BRAKE FAILURE: Parking Brake

2003 CHEVROLET SILVERADO -- 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. Investigation was initiated on December 08 2003. Closed on April 09 2004. For detailed information & supporting documents, see the official NHTSA page concerning investigation #PE03057 »

NHTSA Defect Investigation #DP05009

PARKING BRAKE FAILURE: Parking Brake:Conventional**

** This defect investigation is filed under 3 related vehicle components.
2003 CHEVROLET SILVERADO -- ODI's review of complaint data received since the close of EA04-011 revealed no indication that the investigation should be re-opened.more details can be found in the federal register notice enclosed in the DP05-009 public file.ODI reserves the right to reopen the investigation in the future should conditions warrant. Investigation was initiated on December 20 2005. Closed on May 31 2006. For detailed information & supporting documents, see the official NHTSA page concerning investigation #DP05009 »

NHTSA Defect Investigation #EA04011

PARKING BRAKE FAILURE: Parking Brake:Conventional:Mechanical:Linkage And Cable**

** This defect investigation is filed under 4 related vehicle components.
2003 CHEVROLET SILVERADO -- 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. Investigation was initiated on April 09 2004. Closed on May 10 2005. For detailed information & supporting documents, see the official NHTSA page concerning investigation #EA04011 »

NHTSA Defect Investigation #EA04012

HYDRAULIC PUMP FAILRES: Service Brakes, Hydraulic:Power Assist**

** This defect investigation is filed under 2 related vehicle components.
2003 CHEVROLET SILVERADO -- GM is conducting a recall on all subject vehicles build between May 1999 and October 14, 1999.significant changes were incorporated into production in early October 1999, and vehicles built after that date have lower warranty failure rates.the complaint and warranty data appear to support the effectiveness of these changes. GM made additional changes in November 1999, February 2000, May 2001, and February 2004.ODI will continue to monitor this problem and will take further action, if warranted, in the future.for further technical details see the attached engineering analysis report. Investigation was initiated on April 30 2004. Closed on February 28 2005. For detailed information & supporting documents, see the official NHTSA page concerning investigation #EA04012 »

NHTSA Defect Investigation #PE03026

STEEL WHEEL RIM FRACTURE: Wheels:Multi Piece**

** This defect investigation is filed under 3 related vehicle components.
2003 CHEVROLET SILVERADO -- There have been less than 2 complaints per 100,000 subject vehicles related to the alleged defect.the oldest vehicles (MY 1999) have only 2 complaints in over 140 thousand vehicles after over 4 years in service.the rate of warranty claims potentially related to the alleged defect is less than 0.1%.there are no known incidents involving rapid loss of tire pressure or loss of vehicle control. A defect trend has not been identified at this time.accordingly, this investigation is closed.the closing of this investigation does not constitute a finding by NHTSA that no safety-related defect exists.the Agency will take further action if warranted by the circumstances. Investigation was initiated on June 12 2003. Closed on November 03 2003. For detailed information & supporting documents, see the official NHTSA page concerning investigation #PE03026 »