GM TechLink 2005-08-51
Original text and source
Original text
Service Brake Booster Message
This information applies to all full-size 2004 Cadillac, Chevrolet and GMC trucks and utilities with Hydroboost brake system.
The Service Brake Booster message is used to notify the driver of a Supplemental Brake Assist (SBA) concern on vehicles equipped with a vacuum boost brake system.
There have been reports of the Service Brake Booster Message being displayed on vehicles equipped with a Hydroboost brake system.
During normal diagnostics, a DTC C0136 may be present in the IPC. This DTC will not be in SI for Sport Utility vehicles, because all Sport Utilities use Hydroboost brake systems starting in 2004.
This message could be caused by the IPC being programmed incorrectly.
If the IPC was replaced on a previous unrelated repair and was not SPS programmed, this message will be displayed after the IPC does not receive a valid state of health signal from the SBA for 5 consecutive ignition cycles.
To correct this concern, SPS program the IPC.
To be sure the vehicle is repaired, cycle the ignition to off and on at least 5 consecutive times, delaying in each position at least 30 seconds.
Source
- Source
- GM TechLink — Communication from a manufacturer to dealers (summary published by a government agency)
- Reporter type
- Manufacturer
- Source reference
- 2005-08-51
- 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
- 2005-08-01
- Added to the source's file
- Unknown: not returned by the source API
- Issued / published
- 2005-08-01
- First observed
- 2026-10-06 10:29 UTC (initial bulk load)
- This version fetched
- 2026-10-06 10:29 UTC