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Selected vehicle: 2006 · GMC Yukon XL Denali

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Source reference 10135322

Manufacturer communication — 2006 GMC YUKON DENALI XL

Fitment confirmedReporter type: ManufacturerENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

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

PIP5232 ・ fault and correction ・ for GM vehicles in general

Applies to

  • 2015 and prior GM cars and gasoline-powered light duty and HD trucks.

    the passage
    Models: 2015 and Prior GM Cars and Gasoline-Powered Light Duty and HD Trucks

Fault

  • The catalytic converter has come apart or has set P0420 and/or P0430.

    the passage
    Technicians may encounter a concern where the catalytic converter that has come apart or has set a P0420 and/or P0430.

Finding the cause

Steps to confirm (in the document’s order)

  1. If the converter appears to have failed for no apparent reason, inspect for a poor crimp at the circuit terminal on the engine bank with the concern.

    the passage
    If you believe the catalytic converter has failed and with no apparent reason, it is recommended to inspect for a poor crimp at circuit terminal on the engine bank with the concern.
  2. Inspect the ground for corrosion or damage at the ground terminal ring, the fasteners and the grounding surfaces.

    the passage
    Technicians should inspect the ground for possible corrosion or damage at ground terminal ring, fasteners and grounding surfaces.

Correction

Repair

  • If no corrosion or damage is found, tighten the ground bolt to the proper torque.

    the passage
    If no corrosion or damage is found, tighten the ground bolt to the proper torque

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

    本速報情報通知は、ガソリン動力の自動車、ミッドサイズトラック、小型トラック、および大型トラックの触媒コンバーター早期故障について、整備士に情報を提供するものです。問題のあるバンク側のエンジンブロックのアースリング端子の圧着不良を点検し、ハーネスを修理することをお勧めします。 Machine translation (unreviewed)

    This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
    Go to this passage in the original

Source

Source
NHTSA Manufacturer Communications
Source reference
10135322
Received by source
2018-05-07
Incident date
Unknown

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