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Selected vehicle: 2006 · GMC Yukon XL Denali

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Source reference 10160987

Manufacturer communication — 2006 GMC YUKON DENALI XL

Fitment confirmedReporter type: ManufacturerENGINE

Relation to the target vehicle

  • The source's vehicle field includes the trim.
Model year
Match 2006 — Source vehicle field
Model
Match YUKON DENALI XL — Source vehicle field
Trim
Match Denali — Source vehicle field

What the manufacturer’s document says

PIP5640 ・ fault and correction ・ for GM vehicles in general

Applies to

  • The model table lists all brands and models, model years 2000 - 2019.

    the passage
    Model Years: VIN: Engine: Transmissions: from to All All 2000 - 2019 All All All All

Fault

  • Customers may comment on noise coming from underneath a vehicle equipped with an automatic transmission.

    the passage
    Some customers may comment on noise coming from underneath their vehicle equipped with an automatic transmission.

  • Technicians may find that the noise is coming from the bell housing area.

    the passage
    Technician's may Õnd that the noise is coming from the bell housing area.

Finding the cause

Possible causes

  • Running the engine with those bolts removed may damage the pilot on the front of the torque converter, the pilot hole in the end of the crankshaft, or both.

    the passage
    Damage may occur to the pilot on the front of the torque converter or the pilot hole in the end of the crankshaft or both if the engine is running with the Öex plate to torque converter bolts removed.

Steps to confirm (in the document’s order)

  • Use chassis ears to isolate the component or assembly that is the loudest source of the noise.

    the passage
    It is recommended to use chassis ears to isolate the component or assembly that is the loudest source of the noise.

Correction

Caution

  • Do not remove the flex plate to torque converter bolts, push the converter back toward the transmission and start the engine to decide whether the noise comes from the engine or the transmission.

    the passage
    It is not recommended to remove the Öex plate to torque converter bolts, push the torque converter back towards the transmission and start the engine to determine if the noise is coming from the engine or the transmission.

What is needed

Parts and materials
Not stated
Labor time
Not stated
Special tools
Not stated
Scan tool
Not stated

Only what the technical documents state. "Not stated" does not mean not needed.

Compiled by reading the full text of the document; each point stands on the passage shown. Check the document itself, linked below, before working on a vehicle.

Stated content

  1. Communication summary

    本予備情報通知は、オートマチックトランスミッション装着車において、トルクコンバーターボルトを脱着してエンジンを始動しないことを整備士に通知するものです。これはクランクシャフトのトルクコンバーターに損傷を与える可能性があるためです。 Machine translation (unreviewed)

    This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
    Go to this passage in the original

Source

Source
NHTSA Manufacturer Communications
Source reference
10160987
Received by source
2019-06-10
Incident date
Unknown

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