Source reference 2005-01-51

Manufacturer communication — 2003 GMC FULL SIZE TRUCK OR UTILITY (YUKON)

Reporter type: Manufacturer

Vehicles as recorded

2003 GMC FULL SIZE TRUCK OR UTILITY (YUKON XL) This vehicle's overview →
2003 GMC FULL SIZE TRUCK OR UTILITY (YUKON) This vehicle's overview →

What the manufacturer’s document says

normal characteristic (no repair) ・ names no model (for full-size utilities)

Applies to

After replacing the headlamp switch on a 2003 full size truck or utility, the following changes may be noticed.
the passage
After replacing the headlamp switch on a 2003 full size truck or utility you may notice the following changes.

Fault

The green and amber LED indicators are missing from the face of the switch.
the passage
1. The green and amber LED (light emitting diode) indicators are missing from the face of the switch.
Trouble code B0951 will be set in the BCM after a replacement switch is installed.
the passage
2. Trouble code B0951 will be set in the BCM after a replacement switch is installed.

Finding the cause

Possible causes

A running change was implemented starting with the 2004 model year, and the new replacement switch does not have the "auto" and "disable" LED indicators.
the passage
A running change was implemented starting with the 2004 model year and the new replacement switch doesn't have the "auto" and "disable" LED indicators.
The BCM stores B0951 when a replacement switch is installed on a 2003 vehicle; this is due to the deletion of the LEDs and does not change the operation of the DRLs and headlamps.
the passage
The BCM will store a trouble code B0951 when a replacement switch is installed on a 2003 vehicle. This is due to the deletion of the LEDs and will not change the operation of the DRLs and headlamps.

Correction

Caution

This is a normal condition; no repairs should be attempted.
the passage
This is a normal condition. 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

Communication summary
ヘッドランプスイッチ 2003 フルサイズトラックまたはユーティリティのヘッドランプスイッチを交換した後、次の変化に気づくことがある。 1. 緑とアンバーの LED（発光ダイオード）インジケーターがスイッチの表面に無い。 2. 交換用スイッチを取り付けた後、BCM にトラブルコード B0951 がセットされる。これは正常な状態である。修理を試みてはならない。 2004 年式からランニングチェンジが実施され、新しい交換用スイッチには「auto」と「disable」の LED インジケーターが無い。 2003 の車両に交換用スイッチを取り付けると、BCM はトラブルコード B0951 を記憶する。これは LED が廃止されたことによるもので、DRL とヘッドランプの作動は変わらない。 Machine translation (unreviewed)
Headlamp Switch After replacing the headlamp switch on a 2003 full size truck or utility you may notice the following changes. 1. The green and amber LED (light emitting diode) indicators are missing from the face of the switch. 2. Trouble code B0951 will be set in the BCM after a replacement switch is installed. This is a normal condition. No repairs should be attempted. A running change was implemented starting with the 2004 model year and the new replacement switch doesn't have the "auto" and "disable" LED indicators. The BCM will store a trouble code B0951 when a replacement switch is installed on a 2003 vehicle. This is due to the deletion of the LEDs and will not change the operation of the DRLs and headlamps.
Go to this passage in the original

Source

Source: GM TechLink
Source reference: 2005-01-51
Received by source: 2005-01-01
Incident date: Unknown

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