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Selected vehicle: 2006 · GMC Yukon XL Denali

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Source reference 2006-10-01

Manufacturer communication — 2006 GMC YUKON

ReferenceReporter type: Manufacturer

Relation to the target vehicle

  • The source's vehicle field says Yukon; whether it is an XL is not stated.
  • The trim (Denali) is not stated.
Model year
Match 2006 — Source vehicle field
Model
Unknown YUKON — Source vehicle field
Trim
Unknown

What the manufacturer’s document says

fault and correction ・ names this vehicle

Applies to

  • The information applies to 2005-06 Chevrolet Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra and Yukon equipped with a 4.8, 5.3 or 6.0 engine.

    the passage
    This information applies to the 2005-06 Chevrolet Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra, Yukon equipped with a 4.8, 5.3 or 6.0 engine.

Fault

  • The engine may intermittently stall, misfire, or crank without starting, and there may be no trouble codes set.

    the passage
    The engine may intermittently stall, misfire, or crank without starting. There may be no trouble codes set.

Finding the cause

Possible causes

  • The pink Ignition 1 power feed wire may break inside the insulation near connector C148/C149.

    the passage
    The pink Ignition 1 power feed wire may break inside the insulation near connector C148/C149.

Steps to confirm (in the document’s order)

  1. Complete the SI diagnostics first; if they are inconclusive and the concern can be duplicated, inspect for a loss of Ignition 1 voltage to the ignition coils.

    the passage
    Complete the SI diagnostics for any symptoms or trouble codes found. If diagnostics are inconclusive, and an intermittent stall, misfire, or a crank no start can be duplicated, inspect for a loss of Ignition 1 voltage to the ignition coils.
  2. Wiggle test the ignition coil harnesses to see if the concern can be duplicated.

    the passage
    Wiggle test the ignition coil harnesses to see if the concern can be duplicated.
  3. Inspect splices S160 and S159 for loose connections, and connectors C148 and C149 for wires breaking near the connector.

    the passage
    Inspect splices S160 and S159 for loose connections. Also inspect connectors C148 and C149 for wires breaking near the connector.

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

    イグニッション配線の断線 この情報は、4.8、5.3 または 6.0 エンジンを搭載した 2005-06 Chevrolet Express、Silverado、Suburban、Tahoe、GMC Savana、Sierra、Yukon に適用される。 エンジンが断続的にエンストする、失火する、またはクランキングするが始動しないことがある。診断コードが記録されていないことがある。 見つかった症状または診断コードについて、SI の診断を最後まで行う。診断で結論が出ず、断続的なエンスト、失火、またはクランキングするが始動しない状態を再現できる場合は、イグニッションコイルへの Ignition 1 電圧が失われていないか点検する。 イグニッションコイルのハーネスを揺すって、不具合を再現できるか確かめる。 スプライス S160 および S159 に接続の緩みがないか点検する。また、コネクター C148 および C149 で、コネクター付近の配線が断線していないか点検する。 ピンク色の Ignition 1 電源供給線が、コネクター C148/C149 付近で被覆の内側で断線することがある。 Machine translation (unreviewed)

    Broken Ignition Wire This information applies to the 2005-06 Chevrolet Express, Silverado, Suburban, Tahoe, GMC Savana, Sierra, Yukon equipped with a 4.8, 5.3 or 6.0 engine. The engine may intermittently stall, misfire, or crank without starting. There may be no trouble codes set. Complete the SI diagnostics for any symptoms or trouble codes found. If diagnostics are inconclusive, and an intermittent stall, misfire, or a crank no start can be duplicated, inspect for a loss of Ignition 1 voltage to the ignition coils. Wiggle test the ignition coil harnesses to see if the concern can be duplicated. Inspect splices S160 and S159 for loose connections. Also inspect connectors C148 and C149 for wires breaking near the connector. The pink Ignition 1 power feed wire may break inside the insulation near connector C148/C149.
    Go to this passage in the original

Source

Source
GM TechLink
Source reference
2006-10-01
Received by source
2006-10-01
Incident date
Unknown

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