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2002 Chevrolet Suburban

Defect Investigations

There are also 4 Chevrolet recalls » 13 defect investigations » 206 TSBs » for the Chevrolet Suburban.

NHTSA Defect Investigation #PE06016

CRANK POSITION SENSOR FAILURE - STALL: Engine And Engine Cooling**

** This defect investigation is filed under 2 related vehicle components.
2002 CHEVROLET SUBURBAN -- The Office Of Defects Investigation (ODI) opened a preliminary evaluation (PE06-016) on May 4, 2006 based on eleven vehicle owner questionnaires (voqs) and early warning (ewr) data alleging sudden engine shutdown while driving as a result of crank position sensor failures in MY 2001-2002 General Motors C/K platform vehicles equipped with 8.1L engines.in response to an information request letter sent by ODI, General Motors (GM) provided owner complaint information, field reports and warranty claim data based on a population of 108,338 vehicles. The data was categorized by engine stalls while driving, engine stalls with an unknown driving condition, no start conditions and claims where it was indeterminate if an engine stall occurred while driving.general motor's response included 1,213 owner complaints and field reports of which 289 were categorized as engine stalls while driving allegedly caused by crank position sensor failures. General Motors also submitted warranty claims from its regular warranty (5 years/50,000 miles) and from its extended warranty database. From the regular warranty database there were 3,140 claims of crank position sensor replacement of which 147 claims were from consumers alleging engine stall while driving.GM stated that 2,841 of the claims were indeterminate if an engine stall occurred while driving.from its extended warranty database, GM submitted 1,561 claims of crank position sensor failure that it also stated were indeterminate as to whether an engine stall occurred while driving.in total, GM reports 4,701 claims of crank position sensor failure combining regular warranty and extended warranty.similar to GM's statistical analysis, ODI's analysis showed that the failure rate for warranty claims of engine stall while driving at three years in service is low (less than 1%).however, further analysis determined that the MY 2001 vehicle build period from May 2000 through October 2000 had significantly higher (more than four times) crank position failure rates in both consumer complaint data and warranty claim data than in the build period from November 2000 through July 2001.adding the claims of known engine stall while driving and claims where engine stall was indeterminate, the failure rate at three years in service for this population is over 6%.an engineering analysis (EA06-016) has been opened to further assess the frequency and potential safety consequences associated with the alleged defect in vehicles built from May 2000 through October 2000. Investigation was initiated on May 04 2006. Closed on September 14 2006. For detailed information & supporting documents, see the official NHTSA page concerning investigation #PE06016 »

NHTSA Defect Investigation #DP05009

PARKING BRAKE FAILURE: Parking Brake**

** This defect investigation is filed under 3 related vehicle components.
2002 CHEVROLET SUBURBAN -- 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 #PE05020

UNWANTED LOW-SPEED ABS ACTIVATION: Service Brakes, Hydraulic:Antilock:Control Unit/Module **

** This defect investigation is filed under 2 related vehicle components.
2002 CHEVROLET SUBURBAN -- In a letter dated August 29, 2005, GM notified ODI that it was recalling certain model year 1999 through 2002 C/K pickup trucks and sport utility vehicles to correct a problem with anti-lock brake system (ABS) wheel speed sensor corrosion that may result in unwanted ABS activation and extended stopping distances during low-speed braking (recall 05V-379).GM's recall covers approximately 804,000 vehicles currently registered in the following 14 "salt-belt" states:Connecticut, Illinois, Indiana, Massachusetts, Maine, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, and West Virginia.the recall procedure will involve removing the sensor, cleaning the mounting surface, applying a rust inhibitor (zinc-X) to the surface, and reinstalling the sensor.if necessary, the sensor will be replaced. The population and failure report data given in this resume are for the full region that has been considered by ODI as the "salt-belt."that includes Delaware, Iowa, Maryland, Minnesota, Missouri, Wisconsin and the District of Columbia in addition to the 14 states included in 05V-379.the states covered by GM's recall have the highest incident rates for the subject condition, accounting for 91% of the incidents, but only 24% of subject vehicle sales in the United States.ODI's analysis determined that 840 of the complaints, 244 of the crashes, and 16 of the injuries identified in this investigation occurred in those states.the resulting incident and crash rates are 96.2 and 28.0 per 100,000 vehicles respectively (note:rates are based on vehicle sales, not registered vehicles). The corresponding numbers in the excluded portions of the "salt-belt" are 399,000 vehicles, 81 incidents (20.3 per 100,000 vehicles), 3 crashes, and no injuries.the statistics in the remaining 30 states are 2,406,000 vehicles, 168 incidents (7.0 per 100,000 vehicles), 31 crashes, and one injury.GM and ODI are continuing to monitor the problem experience in states that are not included in the recall.GM will provide ODI with updated complaint, field report, and warranty data in November 2005.ODI and GM will review that data and assess the appropriateness of the current scope of the recall at that time. Investigation was initiated on April 28 2005. Closed on September 13 2005. For detailed information & supporting documents, see the official NHTSA page concerning investigation #PE05020 »

NHTSA Defect Investigation #EA04012

HYDRAULIC PUMP FAILRES: Steering:Hydraulic Power Assist System**

** This defect investigation is filed under 2 related vehicle components.
2002 CHEVROLET SUBURBAN -- 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 #EA02015

THROTTLE STICKING CLOSED: Vehicle Speed Control:Linkages

2002 CHEVROLET SUBURBAN -- This investigation involves the General Motors corporation (GM)throttle body (TB) utilized in model year (MY) 1999-2002 Silverado, Sierra, Tahoe, Suburban, Avalanche and Yukon (subject vehicle(s)) with 4.8L, 5.3L, and 6.0L engines. The TB valve may intermittently stick in a closed position.in such a situation, an operator may apply additional accelerator pedal force to increase engine speed.the application of additional accelerator pedal force, to open a stuck throttle valve, may open the throttle valve more than intended and, in turn, accelerate the engine and vehicle more than intended and reasonably expected by the driver.on August 1, 2002, the Office Of Defects Investigation (ODI), of the National Highway Traffic Safety Administration (NHTSA), opened this engineering analysis.the investigation revealed that two factors may cause the defect: 1) TB manufacturing process problems; and 2) accumulation of deposits (a PCV system by-product) on or around the TB throttle valve and bore.ODI concludes that the TB performs in a defective manner after analyzing GM¿S data submissions, and test data collected by the Vehicle Research And Test Center (VRTC).fifty-nine crashes are alleged to have occurred as a result of GM¿S TB defect.the majority of the crashes involve a single vehicle, engaging in a close quarter vehicle maneuver (or low speed), and causing only minor property damage.four out of the fifty-nine crashes involve injury, and those injuries were minor.although GM¿S TB is defective, based on the evidence gathered, ODI has found that the accelerator pedal force required to open a stuck throttle valve is negligible, and the throttle valve does not stick in the open position.therefore this engineering analysis (EA02-015) will be closed at this time.the closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.for a detailed discussion of the TB component and testing, please see the attached report. Investigation was initiated on August 01 2002. Closed on January 12 2004. For detailed information & supporting documents, see the official NHTSA page concerning investigation #EA02015 »

NHTSA Defect Investigation #PE03026

STEEL WHEEL RIM FRACTURE: Wheels**

** This defect investigation is filed under 3 related vehicle components.
2002 CHEVROLET SUBURBAN -- 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 »