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GMC Yukon XLModel years 2000–2006

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EngineModel years 2001–2001ManufacturerGovernment

Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-521

The recall text (NHTSA's summary) says certain pickup trucks with an 8.1L V8 engine. GM's amended notice adds the 2001 Chevrolet Suburban and "GMC Yukon sport utility vehicles", and the closing resume of ODI's EA06-016 also names the Suburban and the GMC Yukon and gives the build limit (on or before November 15, 2000). The dealer bulletin and the owner letter print "GMC Sierra and Yukon XL".

FaultCrate・Crankshaft position sensor may work intermittently or fail (8.1L V8) - recall 07V-521

With intermittent operation the SES light may illuminate and the vehicle may run rough.

Crank position sensor failure may result in sudden engine shutdown, with no restart or delayed restart.

In ODI's owner survey, 11% reported immediate restart after a stall, 69% delayed restart and 20% no restart.

The crankshaft position can operate intermittently or fail completely.

Variations in the crankshaft position sensor manufacturing process caused an elevated rate of intermittent or inoperative sensors.

How to tell

What to do

  1. Dealers replace the crankshaft position sensor.
  2. As the remedy, an improved CKP is installed.
  3. The repair listed for the claim is: replace the crankshaft position sensor and perform the Crankshaft Position System Variation Learn.
  4. Part: 12575172 Sensor, Crankshaft Position, quantity 1 per vehicle.

Part numbers printed in the document

The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

If left

  • The engine may stall and may restart immediately or after a cool-down period.→ engine stall
  • If the sensor becomes completely inoperative, the engine quits and will not restart.→ engine quits and will not restart
  • Either failure can increase the risk of a crash.→ increased crash risk
  • Over half of the surveyed owners noted at least one stall at speeds above 40mph (= 64.4 km/h), and about one-third noted the vehicle was stranded partially or fully in a lane of traffic.

Caution

  • All of the surveyed consumers noted multiple stalling events before the CKP was properly diagnosed and replaced.
  • Based on GM's decision to conduct a safety recall, this investigation is closed.

In the records

  • Crankshaft Position Sensor: replaced 1（says it was fixed: 1）
  • Transmission: repaired 1（result not stated: 1）

Applies to

  • The recall text refers to pickup trucks with an 8.1L V8 engine.
  • Recall 07V-521 replaces the crank position sensor (CKP) in approximately 12,000 model year 2001 Chevrolet Silverado, Chevrolet Suburban, GMC Yukon and GMC Sierra vehicles with 8.1 liter engines manufactured on or before November 15, 2000.
  • ODI found that MY 2001 vehicles built from May 2000 through October 2000 had significantly higher (more than four times) crank position failure rates than those built from November 2000 through July 2001.
  • In GM's letter to owners: General Motors decided that a defect relating to motor vehicle safety exists in certain 2001 model year Chevrolet Silverado, Suburban, GMC Sierra and Yukon XL vehicles equipped with an 8.1L V8 engine.
  • In its amended defect notice, GM revised the vehicle models to also include 2001 model year Chevrolet Suburban and GMC Yukon sport utility vehicles.
See the evidence (3 documents, 20 passages)
DocumentPublisherDate
[1]Recall 07V521000: ENGINE AND ENGINE COOLING ↗
GovernmentNHTSA
2007-11-07
[2]ODI investigation EA06016: Crank Position Sensor Failure - Stall ↗
GovernmentNHTSA ODI
2007-11-09
[3]Recall 07V-521: documents filed with NHTSA ↗
ManufacturerGeneral Motors (the documents of the recall as filed with NHTSA: defect notice, dealer bulletin)
—

  • Applies toThe recall text refers to pickup trucks with an 8.1L V8 engine.

    ON CERTAIN PICKUP TRUCKS EQUIPPED WITH AN 8.1L V8 ENGINE,— [1]

  • Why it happensThe crankshaft position can operate intermittently or fail completely.

    THE CRANKSHAFT POSITION CAN OPERATE INTERMITTENTLY OR FAIL COMPLETELY.— [1]

  • First signsWith intermittent operation the SES light may illuminate and the vehicle may run rough.

    IF THE SENSOR OPERATES INTERMITTENTLY, THE SES LIGHT MAY ILLUMINATE AND THE VEHICLE MAY RUN ROUGH.— [1]

  • If leftThe engine may stall and may restart immediately or after a cool-down period.

    THE ENGINE MAY STALL, AND IF SO, MAY RE-START IMMEDIATELY OR AFTER A COOL DOWN PERIOD.— [1]

  • If leftIf the sensor becomes completely inoperative, the engine quits and will not restart.

    IF THE SENSOR BECOMES COMPLETELY INOPERATIVE, THE ENGINE WILL QUIT RUNNING AND WILL NOT RE-START.— [1]

  • If leftEither failure can increase the risk of a crash.

    EITHER OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.— [1]

  • RepairDealers replace the crankshaft position sensor.

    DEALERS WILL REPLACE THE CRANKSHAFT POSITION SENSOR FREE OF CHARGE.— [1]

  • Applies toRecall 07V-521 replaces the crank position sensor (CKP) in approximately 12,000 model year 2001 Chevrolet Silverado, Chevrolet Suburban, GMC Yukon and GMC Sierra vehicles with 8.1 liter engines manufactured on or before November 15, 2000.

    In a letter dated November 7, 2007, General Motors (GM) reported to the Office of Defects Investigation (ODI) that it will conduct a safety recall (07V-521) to replace the crank position sensor (CKP) in approximately 12,000 model year (MY) 2001 Chevrolet Silverado, Chevrolet Suburban, GMC Yukon, and GMC Sierra vehicles equipped with 8.1 liter engines manufactured on or before November 15, 2000.— [2]

  • Applies toODI found that MY 2001 vehicles built from May 2000 through October 2000 had significantly higher (more than four times) crank position failure rates than those built from November 2000 through July 2001.

    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.— [2]

  • First signsCrank position sensor failure may result in sudden engine shutdown, with no restart or delayed restart.

    Crank position sensor failure may result in sudden engine shutdown, with no restart or delayed restart.— [2]

  • First signsIn ODI's owner survey, 11% reported immediate restart after a stall, 69% delayed restart and 20% no restart.

    With respect to the ability to restart the vehicle after a stall, 11% reported immediate restart, 69% reported delayed restart and 20% reported no restart.— [2]

  • If leftOver half of the surveyed owners noted at least one stall at speeds above 40mph (= 64.4 km/h), and about one-third noted the vehicle was stranded partially or fully in a lane of traffic.

    Over half noted at least one engine stall incident at speeds in excess of 40mph. About one-third noted the vehicle was stranded either partially or fully in a lane of traffic after the engine stall.— [2]

  • CautionAll of the surveyed consumers noted multiple stalling events before the CKP was properly diagnosed and replaced.

    All of the consumers surveyed noted multiple stalling events prior to proper diagnosis and replacement of the CKP.— [2]

  • RepairAs the remedy, an improved CKP is installed.

    As a remedy, an improved CKP will be installed in the subject vehicles.— [2]

  • CautionBased on GM's decision to conduct a safety recall, this investigation is closed.

    Based on GM's decision to conduct a safety recall, this investigation is closed.— [2]

  • Why it happensVariations in the crankshaft position sensor manufacturing process caused an elevated rate of intermittent or inoperative sensors.

    Variations in the crankshaft position sensor manufacturing process caused an elevated rate of incidents of intermittent or inoperative sensors.— [3]

  • RepairThe repair listed for the claim is: replace the crankshaft position sensor and perform the Crankshaft Position System Variation Learn.

    Replace Crankshaft Position Sensor. Perform Crankshaft Position System Variation Learn.— [3]

  • RepairPart: 12575172 Sensor, Crankshaft Position, quantity 1 per vehicle.

    12575172 Sensor, Crankshaft Position 1— [3]

  • Applies toIn GM's letter to owners: General Motors decided that a defect relating to motor vehicle safety exists in certain 2001 model year Chevrolet Silverado, Suburban, GMC Sierra and Yukon XL vehicles equipped with an 8.1L V8 engine.

    General Motors has decided that a defect that relates to motor vehicle safety exists in certain 2001 model year Chevrolet Silverado, Suburban; GMC Sierra and Yukon XL model vehicles, equipped with an 8.1L V8 engine.— [3]

  • Applies toIn its amended defect notice, GM revised the vehicle models to also include 2001 model year Chevrolet Suburban and GMC Yukon sport utility vehicles.

    GM is revising the vehicle models to also include 2001 Model Year Chevrolet Suburban and GMC Yukon sport utility vehicles.— [3]

Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.

Records under this issue 4

Owner complaint 3Recall 1

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