GM TechLink 2007-07-01
Original text and source
Original text
Battery Lamp and DTC B1489
This information applies to 2005-06 Escalade, Avalanche, Suburban, Tahoe, Denali, Sierra, Denali, Yukon XL and 2005-07 Silverado and Sierra Classic with Regulated Voltage Control (RVC) module.
A vehicle may have an intermittent battery lamp with a history code B1489 in the Battery Generator Control Module (BGCM).
This concern may be noticed after the BGCM has been replaced for another issue.
Whenever the BGCM is replaced, the module needs to be SPS programmed before the vehicle is released to the customer.
If the calibration was not completed properly or the vehicle left the dealership with the module not programmed, a DTC B1489 code may be set, followed by a intermittent battery lamp.
Source
- Source
- GM TechLink — Communication from a manufacturer to dealers (summary published by a government agency)
- Reporter type
- Manufacturer
- Source reference
- 2007-07-01
- Country / market
- US
- Language
- en
- Document version
- Version 3 (3 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
- 2007-07-01
- Added to the source's file
- Unknown: not returned by the source API
- Issued / published
- 2007-07-01
- First observed
- 2026-10-06 08:58 UTC (initial bulk load)
- This version fetched
- 2026-10-09 12:52 UTC