GM TechLink 2005-03-51
Original text and source
Original text
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.
Source
- Source
- GM TechLink — Communication from a manufacturer to dealers (summary published by a government agency)
- Reporter type
- Manufacturer
- Source reference
- 2005-03-51
- Country / market
- US
- Language
- en
- Document version
- Version 2 (2 held)
- Note on the source
- Copyright General Motors Corporation. No licence is stated. Held as the headline and short quoted passages with the issue named and linked; the articles themselves are not stored or shown.
Dates
- Incident date
- Unknown
- Received by source
- 2005-03-01
- Added to the source's file
- Unknown: not returned by the source API
- Issued / published
- 2005-03-01
- First observed
- 2026-10-06 10:29 UTC (initial bulk load)
- This version fetched
- 2026-10-09 12:52 UTC