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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.

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

    Japanese translation not processed yet.

    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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