Original text and source

Original text

This Preliminary Information communication provides information to the technician about vehicles that during battery parasitic drain test, there may be some confusion as to what the normal power consumption reading should be from the OnStar system. Technician should understand the power cycles of the various OnStar systems. All Generation 6, 7, 8, and 9 systems are powered up continuously for 48 hours from ignition off. After 120 hours from ignition off, these systems then completely power off. The Onstar modules draw: * IGN ON - 240 to 400 Milliamp. * IGN OFF - 3 to 20 Milliamp for 48 hours or 120 hours on Gen 9 and vehicle communication platforms. * IGN OFF - 0.2 to 0.8 Milliamp after 48 hours or 120 hours on Gen 9 and vehicle communication platforms.

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Source

Source: NHTSA Manufacturer Communications — Communication from a manufacturer to dealers (summary published by a government agency)
Reporter type: Manufacturer
Source reference: 10112528
Country / market: US
Language: en
Document version: Version 2 (2 held)
Note on the source: US federal government dataset of communications manufacturers sent to dealers. NHTSA publishes a summary of each communication, not its full text.

Dates

Incident date: Unknown
Received by source: 2017-08-15
Added to the source's file: 2017-08-15
Issued / published: 2012-11-01
First observed: 2026-10-05 02:21 UTC (initial bulk load)
This version fetched: 2026-10-05 03:49 UTC