GM TechLink 2005-04-52
Original text and source
Original text
Radio Theft LED Does Not Flash
Owners of some 2003 -05 Chevrolet, GMC, Cadillac, and Hummer H2 full size trucks and utilities may comment that the red radio theft LED does not flash.
Starting with the 2003 model year, owners no longer have to enter a security code into the radio to activate the theft feature like earlier model years. The radio theft feature works automatically by learning a portion of the VIN.
During assembly of the radio, a manufacturer’s counter is set at 255 counts for assembly purposes and should be set to 0 counts at the end of assembly. If the counter is not set to 0, the radio LED will not flash.
Each cycle of the ignition switch reduces the counter by 1 count. Once the counter reaches 0, the red LED starts to work normally.
If an owner requests the LED to operate immediately, the ignition key must be cycled as many times as required to run the remaining counts to 0.
To count as a cycle, the key must be left in the RUN and OFF positions for least 3 seconds each.
TIP: To prevent the Retained Accessory Power (RAP) from keeping the radio alive when the ignition is off, be sure the driver’s door is open during the key on/key off process.
TIP: SPS programming the radio will not correct the concern.
Source
- Source
- GM TechLink — Communication from a manufacturer to dealers (summary published by a government agency)
- Reporter type
- Manufacturer
- Source reference
- 2005-04-52
- Country / market
- US
- Language
- en
- Document version
- Version 1 (1 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
- 2005-04-01
- Added to the source's file
- Unknown: not returned by the source API
- Issued / published
- 2005-04-01
- First observed
- 2026-10-06 10:29 UTC (initial bulk load)
- This version fetched
- 2026-10-06 10:29 UTC