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Source reference 2006-08-51

Manufacturer communication — 2005 GMC FULL SIZE UTILITIES (YUKON)

Reporter type: Manufacturer

Vehicles as recorded

What the manufacturer’s document says

fault and correction ・ names no model (for full-size utilities)

Applies to

  • The information applies to 2005-06 full size utilities, Cadillac Escalade, Chevrolet Avalanche and HUMMER H2 built after May 2005.

    the passage
    This information applies to 2005-06 full size utilities, Cadillac Escalade, Chevrolet Avalanche, and HUMMER H2 built after May, 2005.

Fault

  • Owners may comment of a creak or squeak type noise on acceleration, deceleration, over bumps, in turns or on garage shifts; it may sound like it comes from the front or the rear of the vehicle.

    the passage
    Owners may comment of a creak or squeak type noise on acceleration, deceleration, over bumps, turns or garage shifts. This noise may sound like it is from the front or the rear of the vehicle.

  • The noise, felt or heard using Chassis Ears, may seem to come from along the entire frame side rail or the body mount areas.

    the passage
    This noise (felt or heard using Chassis Ears) may seem to be coming from along the entire frame side rail or body mount areas.

  • In some cases the noise may sound like loose lumber when driving straight or turning on a minimally rough road surface.

    the passage
    In some cases, the noise may sound like loose lumber while driving on a minimally rough road surface while driving straight or turning.

Finding the cause

Possible causes

  • The noise could be coming from the rear lower control arm bushings; the squeak is caused by relative movement of the bushing to the control arm flange.

    the passage
    This noise could be coming from the rear lower control arm bushings. The squeak is caused by relative movement of the bushing to the control arm flange.

Steps to confirm (in the document’s order)

  • To help isolate the noise to the control arm bushing, spray penetrating oil (WD-40 or equivalent) on the bushing-to-control-arm area.

    the passage
    To help isolate the noise to the control arm bushing, spray penetrating oil (WD-40 or equivalent) on the bushing to the control arm area.

Correction

Repair

  • If the noise is eliminated or reduced, replace the control arm assembly.

    the passage
    If the noise is eliminated or reduced, replace the control arm assembly.

Caution

  • The noise can sound like it comes from the propshaft; do not replace the propshaft for this condition.

    the passage
    IMPORTANT: This noise can sound like it is coming from the propshaft. Do not replace the propshaft for this condition.

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

    きしみ音またはキーキー音 この情報は、2005年5月より後に製造された 2005-06 のフルサイズユーティリティ、Cadillac Escalade、Chevrolet Avalanche、HUMMER H2 に適用される。 所有者が、加速時、減速時、段差を越えるとき、旋回時、または車庫入れ時のシフト操作で、きしみ音またはキーキー音のような音を訴えることがある。この音は車両の前部または後部から出ているように聞こえることがある。 この音（Chassis Ears を使って感じる、または聞こえる）は、フレームのサイドレール全体またはボディマウントの周辺から出ているように思えることがある。 場合によっては、わずかに荒れた路面を直進または旋回して走行しているときに、固定されていない木材のような音に聞こえることがある。 重要：この音はプロペラシャフトから出ているように聞こえることがある。この症状でプロペラシャフトを交換しないこと。 この音はリアロアコントロールアームのブッシュから出ている可能性がある。キーキー音は、ブッシュとコントロールアームのフランジとの相対的な動きによって生じる。 音の出どころをコントロールアームのブッシュに絞り込むために、ブッシュとコントロールアームの境目に浸透潤滑剤（WD-40 または同等品）を吹き付ける。 音が消える、または小さくなる場合は、コントロールアームASSYを交換する。 Machine translation (unreviewed)

    Creak or Squeak Noise This information applies to 2005-06 full size utilities, Cadillac Escalade, Chevrolet Avalanche, and HUMMER H2 built after May, 2005. Owners may comment of a creak or squeak type noise on acceleration, deceleration, over bumps, turns or garage shifts. This noise may sound like it is from the front or the rear of the vehicle. This noise (felt or heard using Chassis Ears) may seem to be coming from along the entire frame side rail or body mount areas. In some cases, the noise may sound like loose lumber while driving on a minimally rough road surface while driving straight or turning. IMPORTANT: This noise can sound like it is coming from the propshaft. Do not replace the propshaft for this condition. This noise could be coming from the rear lower control arm bushings. The squeak is caused by relative movement of the bushing to the control arm flange. To help isolate the noise to the control arm bushing, spray penetrating oil (WD-40 or equivalent) on the bushing to the control arm area. If the noise is eliminated or reduced, replace the control arm assembly.
    Go to this passage in the original

Source

Source
GM TechLink
Source reference
2006-08-51
Received by source
2006-08-01
Incident date
Unknown

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