Source reference 10139421
Manufacturer communication — 2006 GMC YUKON DENALI XL
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
07-06-03-009D ・ normal characteristic (no repair) ・ names this vehicle
Applies to
The model list names 2005-2014 GMC Yukon models.
the passage
2005-2014 GMC Yukon Models
Fault
Customers may comment that the voltmeter is fluctuating between 12 and 14 volts.
the passage
Some customers may comment that the voltmeter is fluctuating between 12 and 14 volts on their full size pickup or utility vehicle.
When towing or hauling a camper/trailer, customers may comment that the auxiliary battery for the camper/trailer will not stay charged.
the passage
Some customers may comment that when towing or hauling a camper/trailer, the auxiliary battery for the camper/trailer will not stay charged.
Finding the cause
Possible causes
Starting with the 2005 model year, light duty full size pickups and utilities have a Regulated Voltage Control (RVC) system.
the passage
Starting with the 2005 model year, light duty full size pickups and utilities are equipped with a Regulated Voltage Control (RVC) system.
The RVC system reduces the targeted generator output to 12.6–13.1 volts in "Fuel Economy Mode" to improve fuel economy.
the passage
This system reduces the targeted output of the generator to 12.6–13.1 volts when in “Fuel Economy Mode” to improve fuel economy.
Correction
Repair
With the tow/haul feature enabled, the RVC system stays in "Charge Mode" and the targeted generator output voltage is 13.9–15.5 volts, depending on battery state of charge and estimated battery temperature.
the passage
With the tow/haul feature enabled, the RVC system will stay in “Charge Mode” and the targeted generator output voltage will be 13.9–15.5 volts, depending on the battery state of charge and the estimated battery temperature.
The second method is to turn on the headlights, which increases the generator's targeted output voltage to 13.9–14.5 volts.
the passage
The second method is to turn on the headlights, which will increase the generator's targeted output voltage to 13.9–14.5 volts.
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.
What is needed
- Parts and materials
- Not stated
- Labor time
- Not stated
- Special tools
- Not stated
- Scan tool
- Not stated
Only what the technical documents state. "Not stated" does not mean not needed.
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
本情報通知は、調整電圧制御システムによるボルトメーター計の変動およびキャンプトレーラー/トレーラーバッテリー充電に関する懸念事項について、モデルを追加するものです。 Machine translation (unreviewed)
This informational bulletin adds models to information on voltmeter gauge fluctuation due to regulated voltage control system and concerns about camper/trailer battery charging.
Go to this passage in the original
Source
- Source
- NHTSA Manufacturer Communications
- Source reference
- 10139421
- Received by source
- 2018-06-04
- Incident date
- Unknown
Open original text and sourceOpen the provider's page (external)