1999 GMC Yukon

The Office of Defects Investigation (ODI) received Defect Petition DP10-003 on March 2, 2010, requesting the investigation of model year (MY) 2003 Chevrolet Silverado 2500HD 4WD pickup trucks for corrosion failures of the vehicle brake lines.DP10-003 was granted and on March 30, 2010, Preliminary Evaluation PE10-010 was opened on more than six million model year 1999 through 2003 light trucks and sport utility vehicles manufactured and sold by General Motors Corporation (GM).On July 2, 2010, ODI received GM's response to an information request, which included GM's assessment of the frequency and safety consequences of the alleged defect. GM stated that:(1) the brake system of the subject vehicles is split front/rear and should a brake pipe suddenly fail for any reason, the affected vehicle would be capable of stopping with the pressure supplied by the remaining circuit; (2) the subject vehicles were designed to meet the hydraulic circuit partial failure requirements of Federal Motor Vehicle Safety Standards 105 and 135, Light Vehicle Brake Systems; and (3) should a brake fluid leak occur for any reason, the brake system malfunction indicator lamp (MIL) would illuminate and warn the driver before the brake fluid level was low enough to cause a loss of line pressure.ODI's and GM's analysis indicates that 85 percent of the complaints occurred on vehicles used primarily in States that use salt on the roads during Winter months (Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia and Wisconsin).Overall the complaint rates per 100,000 vehicles for Salt Belt States is 43.0 and Non-Salt Belt is 3.0.In approximately 25 percent of the complaints the brake pipe failure occurred suddenly, with no warning (i.e., no MIL, Brake Fluid Loss Warning), and resulted in extended stopping distances.In 30 of these the increase in stopping distance that resulted was a factor in the crash and in 10 others the vehicle was intentionally steered off the road or into another lane of travel in order to avoid a crash.This investigation has been upgraded to an Engineering Analysis (EA11-001) for subject vehicles sold or currently registered in Salt Belt States to further assess the scope, frequency and safety risks associated with sudden failures of corroded brake pipes that can result in decreased brake effectiveness. ODI will continue to gather information on subject vehicles outside the Salt Belt as well.

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.

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.

VEHICLE HAS ONLY 21,650 M ON IT, USED MOSTLY ON WEEKENDS AND IN THE SNOW IN WINTER. IT WAS DOING FINE UNTIL 9/18/16 WHEN SUDDENLY I NOTICED MY BRAKE WAS NOT RESPONDING AS USUAL. I HAD TO PUSH THE PEDAL TO THE FLOOR REPEATEDLY TO STOP, BARELY MISSED HITTING THE CAR IN FRONT OF ME. I WAS ON ONE OF MY CITY STREETS GETTING BACK HOME AFTER GROCERY SHOPPING. DROVE HOME SLOWLY AND VERY CAREFULLY. HAD IT TOWED TO A NEARBY GM DEALER. HE SAYS MOST OF THE BRAKE LINES AND SOME HOSES HAVE RUSTED, NEED TO BE REPLACED. THAT WOULD BE 15-16 HOURS LABOR AND WILL COST ME $ 2000.00. IT SNOWS HERE QUITE A BIT AND AFTER THE SEASON, I ALWAYS WASH MY VEHICLES WITH EMPHASIS ON THE UNDERSIDE TO REMOVE THE SALT AND CHEMICALS. BESIDES, ON THIS VEHICLE I HAD TO REPAINT THE HOOD TWICE, ROOF ONCE AND REPLACE THE REAR BUMPER SO FAR- ALL DUE TO RUST. NOW MY FRONT BUMPER IS SHOWING SIGNS OF RUST. WHAT'S THE MATTER - WITH ALL THIS EXCESSIVE RUSTING ON THIS VEHICLE. I HAVE MY OTHER SUV PARKED RIGHT BESIDE THIS AT HOME AND USE IT IN THE WINTER TIME. IT IS MUCH OLDER THAN YUKON AND THERE IS NO RUST PROBLEM AT ALL WITH IT. LOOKS LIKE THERE IS SOME SERIOUS PROBLEM WITH THE METAL USED IN THIS VEHICLE OR LACK OF QUALITY CONTROL. GM DID A BAD JOB WITH THIS VEHICLE. THEY SAY THERE WAS NO RECALL ON THIS MODEL. WOULD LIKE TO KNOW IF I CAN GET COMPENSATED BY GM FOR ALL THIS HARDSHIP. DO NOT KNOW WHAT ELSE IS IN STORE WITH THIS VEHICLE IN FUTURE. HAVE TO GET THE BRAKE JOB DONE RIGHT AWAY BUT VERY PRICEY FOR MY BUDGET. PLEASE CHECK INTO THIS PROBLEM AND LET ME KNOW HOW TO PROCEED. LOOKING FORWARD TO HEARING FROM YOU SOON. THANKS, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ID

10911068

Incident

Sep 18, 2016

Mileage

21,650 mi

TL* THE CONTACT OWNS A 1999 GMC YUKON. THE CONTACT STATED THAT WHILE BRAKING AT LOW SPEEDS, THE VEHICLES FRONT END WOULD RATTLE AND SHAKE. THE CONTACT STATED THAT THE BRAKE PEDAL WOULD TRAVEL TO THE FLOORBOARD WHEN DEPRESSED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE ABS MODULE NEEDED TO BE REPAIRED. THE VEHICLE WAS REPAIRED, HOWEVER THE FAILURE RECURRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000.

NHTSA ID

10836695

Incident

Apr 26, 2013

Mileage

90,000 mi

ANYTIME I APPLY THE BRAKES AND REACH A SPEED BETWEEN 5 AND 10 MPH THE ABS ENGAGES AND THE STOPPING DISTANCE IS GREATLY INCREASED.

NHTSA ID

10825193

Incident

Aug 1, 2015

Mileage

150,000 mi

ABS FAILURE. UNABLE TO STOP VEHICLE. REMOVED ABS MODULE FUSE TO SAFELY OPERATE VEHICLE. *TR

NHTSA ID

10626004

Incident

Oct 8, 2010

Mileage

145,661 mi

COMPLETE BRAKE FAILURE WHEN TWO METAL LINES RUPTURED CAUSING A LOSS OF HYDRAULIC PRESSURE IN BOTH CIRCUITS DURING A HARD STOP. ABS HAD NOT ACTIVATED. THE BRAKING TOOK PLACE AT LOW SPEED WHEN A CAR AHEAD STOPPED SUDDENLY PEDAL SANK TO THE FLOOR, AND THE CABLE-ACTIVATED PARKING BRAKE WAS THEN USED TO AVOID A COLLISION AND GET THE TRUCK TO THE SIDE OF THE ROAD.

NHTSA ID

10587990

Incident

Mar 25, 2014

Mileage

156,830 mi

BRAKE ROTOR AND PAD KIT PURCHASED FROM ROCK AUTO WAS THE WRONG DIMENSION AND THEY REFUSED TO ACCEPT THE IMPROPER FIT, THE FOLLOWING RESPONSE FROM ROCK AUTO: :[XXX] I HAVE RECEIVED A REPLY FROM THE MANUFACTURER CONFIRMING THAT PART NUMBER KOE 1970, THE ROTORS YOU RECEIVED, ARE THE CORRECT ROTORS FOR A 1999 GMC YUKON 5.7L V8 WITH 4WD AND 6 LUG WHEELS. THE PART NUMBER FOR THESE ROTORS SHOULD BE AR8609XPR. IF THIS IS NOT THE NUMBER STAMPED ON THE ROTOR YOU RECEIVED, YOU MAY HAVE RECEIVED A MIS-BOXED PART. IF THAT IS THE CASE, PLEASE RESPOND WITH THE NUMBER THAT IS STAMPED ON THE ROTOR YOU RECEIVED. IF THIS NUMBER MATCHES THE ROTORS YOU RECEIVED, YOU CAN SIMPLY FOLLOW THE RETURN INSTRUCTIONS I HAVE EMAILED TO YOU. IN THIS CASE WE WOULD BE UNABLE TO REFUND YOU THE ORIGINAL SHIPPING, BUT WE WILL COVER THE RETURN SHIPPING IN THE FORM OF A SHIPPING LABEL. WHEN THE MANUFACTURER SAYS THAT THE FIT IS CORRECT AND THE CUSTOMER SAYS IT IS NOT, IT IS OUR POLICY TO SPLIT THE SHIPPING ON THE ORDER. I APOLOGIZE FOR THE INCONVENIENCE, AND THANK YOU FOR YOUR COOPERATION IN THIS MATTER. THIS IS A VERY DANGEROUS CONDITION WHERE THE AFTERMARKET "BROKERS" LIKE ROCK AUTO ARE SELLING PARTS THAT ARE THE WRONG SIZE AND THEN SUPPORTING THE MANUFACTURER (PROFITING). THE THICKNESS OF THE ROTOR PLATE PUSHED MY ROAD WHEEL OUT BEYOND FULL WHEEL LUG NUT ENGAGEMENT AND NO ENGAGEMENT OF THE ROAD WHEEL CENTER HOLE WITH THE BEARING HUB. THE ONLY CONTACT WAS THE LUG NUTS. THIS IS AN EXTREMELY DANGEROUS CONDITION. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ID

10550660

Incident

Oct 15, 2013

SAME THING AS ALREADY LISTED. MY RADIO, WIPERS AND WINDOWS STOPPED WORKING. THE RADIO WILL RANDOMLY COME ON BUT IF YOU TRY TO USE THE WIPERS OR ROLL DOWN A WINDOW IT SHUTS ALL 3 DOWN. FOUND THROUGH RESEARCH THIS IS A COMMON ISSUE AND REQUIRES THE BODY CONTROL MODULE TO BE REPLACED. *TR

NHTSA ID

10546567

Incident

Sep 2, 2013

Mileage

130,000 mi

HAD TO STOP IN A HURRY ON THE FREEWAY AND WAS GOING ABOUT 60 MILES AN HOUR AND HIT THE BRAKES, I BELIEVE THE ABS LOCKED UP AND I FISHTAILED FROM THE LEFT TO THE RIGHT AND BACK TO THE LEFT AGAIN. ENGINE SHUTOFF AUTOMATICALLY AND CHECK ENGINE LIGHT CAME ON. THIS NEARLY CAUSED A MULTI CAR COLLISION WITH A POSSIBLE BRIDGE FLY AWAY AS WE WERE ON A BRIDGE AT THE TIME. LUCKILY THROUGH DEFENSIVE DRIVING WAS ABLE TO GAIN CONTROL OF THE VEHICLE AND KEEP IT FROM HITTING ANYTHING OR ANYONE, HOWEVER NOW WHEN TURNING RIGHT OR LEFT THERE IS A SQUEAK AT EVERY ROTATION WHEN GOING SLOW. ALSO THE VEHICLE SLOWLY HESITATES COMING TO A STOP AND ABS WILL SOMETIMES START ENGAGING CAUSING NEAR COLLISIONS. *TR

NHTSA ID

10533174

Incident

Jul 26, 2013

Mileage

183,690 mi

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.  The PI update to version D is to advise the unlock procedure is temporarily unavailable.  E version update is to add administrative details.

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.  The PI update to version D is to advise the unlock procedure is temporarily unavailable.