Wednesday, November 10, 2021

Disclaimer2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 08-08-46-004A Date: 121130

Disclaimer2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 08-08-46-004A Date: 121130



Electrical - Aftermarket Devices May Interfere With OnStar(R)



INFORMATION



Bulletin No.: 08-08-46-004A



Date: November 30, 2012



Subject: (R)Information on Aftermarket Device Interference with OnStar Diagnostic Services



Models:



2013 and Prior GM Passenger Cars and Trucks



Equipped with OnStar(R) (RPO UE1)



Supercede:



This bulletin is being revised to add the 2010-2013 model years. Please discard Corporate Bulletin Number 08-08-46-004 (Section 08 - Body and



Accessories).



This bulletin is being issued to provide dealer service personnel with information regarding aftermarket devices connected to the Diagnostic Link



Connector (DLC) and the impact to OnStar(R) diagnostic probes and Vehicle Diagnostic e-mails.



Certain aftermarket devices, when connected to the Diagnostic Link Connector, such as, but not limited to, Scan Tools, Trip Computers, Fuel



Economy Analyzers and Insurance Tracking Devices, interfere with OnStar's ability to perform a diagnostic probe when requested (via a blue



button call) by a subscriber. These devices also prohibit the ability to gather diagnostic and tire pressure data for a subscriber's scheduled OnStar(R)



Vehicle Diagnostic (OVD) e-mail.



These aftermarket devices utilize the Vehicle's serial data bus to perform data requests and/or information gathering. When these devices are



requesting data, OnStar(R) is designed not to interfere with any data request being made by these devices as required by OBD II regulations.



The OnStar(R) advisor is unable to definitively detect the presence of these devices and will only be able to inform the caller or requester of the



unsuccessful or incomplete probe and may in some cases refer the subscriber/requester to take the vehicle to a dealer for diagnosis of the concern.



When performing a diagnostic check for an unsuccessful or incomplete OnStar(R) diagnostic probe, or for concerns regarding completeness of the



OnStar(R) Vehicle Diagnostic (OVD) e-mail, verify that an aftermarket device was not present at the time of the requested probe. Regarding the



OVD e-mail, if an aftermarket device is interfering (including a Scan Tool of any type), the e-mail will consistently display a "yellow" indication in



diagnostics section for all vehicle systems except the OnStar(R) System and Tire Pressure data (not available on all vehicles) will not be displayed



(i.e. section is collapsed). Successful diagnostic probes and complete OVD e-mails will resume following the removal or disconnecting of the



off-board device.



2010 Cadillac Truck SRX FWD V6-3.0L Page 3

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