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Selected vehicle: 2006 · GMC Yukon XL Denali

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Source reference 10137526

Manufacturer communication — 2006 GMC YUKON

ReferenceReporter type: ManufacturerEXTERIOR LIGHTING:HEADLIGHTS:HIGH/LOW BEAM DIMMER SWITCH

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

PIT3219E ・ normal characteristic (no repair) ・ names this vehicle

Applies to

  • The model table lists GMC Yukon for model years 2003 - 2018.

    the passage
    GMC Yukon 2003 - 2018

Fault

  • The Daytime Running Lamps (DRLs) or the auto headlamps will not shut off when the daytime running lamp disable switch, part of the headlamp switch, is used.

    the passage
    Some customer may state that the Daytime Running Lamps (DRL’s) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch).

Finding the cause

Possible causes

  • Vehicles built for Canada (RPO Z49) have different software that does not allow the DRLs or auto headlamps to be shut off.

    the passage
    Vehicles that were built for Canada (RPO Z49) have different software that doesn’t allow the DRL’s or Auto headlamp to be shut off.

Correction

Caution

  • This is a normal operation of the vehicle and no repairs should be attempted.

    the passage
    This is a normal operation of the vehicle and no repairs should be attempted.

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

    本予備情報は、カナダ向けに製造された車両(RPO Z49)では、ヘッドランプスイッチの一部であるデイタイムランニングランプ(DRL)無効スイッチを使用してもデイタイムランニングランプ(DRL)またはオートヘッドランプがオフにならないことをテクニシャンに周知するものです。これらの車両は、DRL またはオートヘッドランプをオフにすることを許可しない異なるソフトウェアで製造されています。カナダ法ではデイタイムランニングランプ(DRL)またはオートヘッドランプの無効化が禁止されています。 Machine translation (unreviewed)

    This Preliminary Information communicates to techniciansthat the Daytime Running Lamps (DRL's) or the auto headlamps will not shut off when using the daytime running lamp disable switch (Which is part of the headlamp switch), if the vehicles was built for Canada (RPO Z49). These vehicles were built with different software that doesn't allow the DRL's or Auto headlamp to be shut off. Canada law prohibits disabling daytime running lamps (DRL's) or auto headlamps.
    Go to this passage in the original

Source

Source
NHTSA Manufacturer Communications
Source reference
10137526
Received by source
2018-05-21
Incident date
Unknown

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