Source reference 2005-03-51

Manufacturer communication — 2005 GMC FULL SIZE PICKUP/UTILITY (YUKON)

Reporter type: Manufacturer

Vehicles as recorded

2005 GMC FULL SIZE PICKUP/UTILITY (YUKON XL) This vehicle's overview →
2005 GMC FULL SIZE PICKUP/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

On a new 2005 model year light duty full size pickup/utility vehicle, customers may comment that the instrument panel voltmeter fluctuates between 12 and 14 volts.
the passage
Some customers may comment that their instrument panel voltmeter is fluctuating between 12 and 14 volts on their new 2005 model year light duty full size pickup/utility vehicle.

Fault

This causes the voltmeter to fluctuate between 12 and 14 volts; conventional systems usually maintain a more consistent reading of 14 volts.
the passage
This will cause the voltmeter to fluctuate between 12 and 14 volts. By comparison, conventional systems usually maintain a more consistent reading of 14 volts.

Finding the cause

Possible causes

For the 2005 model year, light duty full size pickups and utilities are equipped with a new Regulated Voltage Control (RVC) system, covered in the September 2004 TechLink.
the passage
For 2005 model year, light duty full size pickups and utilities, are equipped with a new Regulated Voltage Control (RVC) system, covered in the September 2004 TechLink.
The RVC system changes vehicle voltage up or down under various scenarios; battery state of charge and the vehicle's present electrical needs are only two of the numerous conditions taken into account.
the passage
The RVC system allows changes to vehicle voltage, up or down, under various scenarios. Battery state of charge and the vehicle’s present electrical needs are only two of numerous conditions taken into account.

Correction

Caution

This fluctuation with the RVC system is normal system operation and no repairs should be attempted.
the passage
This fluctuation with the RVC system is normal system operation 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

Communication summary
電圧計のふらつき新しい2005年式のライトデューティフルサイズピックアップ／ユーティリティ車で、インストルメントパネルの電圧計が 12 ボルトと 14 ボルトの間でふらつくと顧客が申し出ることがある。 2005年式のライトデューティフルサイズピックアップおよびユーティリティは、新しい Regulated Voltage Control（RVC）システムを装備しており、これは2004年9月の TechLink で取り上げている。 RVC システムは、さまざまな状況に応じて車両の電圧を上げ下げできるようにする。バッテリーの充電状態と車両のその時点の電気的な必要量は、考慮される多数の条件のうちの二つにすぎない。これにより電圧計は 12 ボルトと 14 ボルトの間でふらつく。比較すると、従来のシステムは通常、14 ボルトというより一定した指示を保つ。 RVC システムでのこのふらつきはシステムの正常な作動であり、修理を試みてはならない。 Machine translation (unreviewed)
Voltmeter Fluctuation Some customers may comment that their instrument panel voltmeter is fluctuating between 12 and 14 volts on their new 2005 model year light duty full size pickup/utility vehicle. For 2005 model year, light duty full size pickups and utilities, are equipped with a new Regulated Voltage Control (RVC) system, covered in the September 2004 TechLink. The RVC system allows changes to vehicle voltage, up or down, under various scenarios. Battery state of charge and the vehicle’s present electrical needs are only two of numerous conditions taken into account. This will cause the voltmeter to fluctuate between 12 and 14 volts. By comparison, conventional systems usually maintain a more consistent reading of 14 volts. This fluctuation with the RVC system is normal system operation and no repairs should be attempted.
Go to this passage in the original

Source

Source: GM TechLink
Source reference: 2005-03-51
Received by source: 2005-03-01
Incident date: Unknown

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