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Torque » Torque OBD ECU Scanner » Torque Discussion / Ideas » GMLAN Single wire CAN

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Author Topic: GMLAN Single wire CAN
kevin1
Member
Posts: 1
Post GMLAN Single wire CAN
on: August 1, 2014 (GMT)

Are there any torque compatible GMLAN single wire CAN Bluetooth adapters available? Also low priced :-) ?

My Pontiac Torrent is showing Service Stabilitrak on the dash but my cheap ELM327 OBD Bluetooth tool does no show any codes for this. From what I understand I need a tool that supports GMLAN single wire CAN like a shop would use.
frodus
Member
Posts: 518
Post Re: GMLAN Single wire CAN
on: August 1, 2014 (GMT)

Single wire CAN (GM) is not a legislated OBD2 protocol. ELM327 or STN1110 based adapters will not work with GMLAN 1-wire CAN protocol. The adapter must contain the STN1170 chipset. The only adapter I know of that uses that chip, is this:
http://www.scantool.net/obdlink-mx.html

More about the chipset:
http://www.obdsol.com/solutions/chips/stn1170/

Also, Torque is an OBD2 Engine diagnostics reader. If another ECU, that is not related to engine diagnostics, is reporting a code then you are not likely to be able to read it. The GMLAN is proprietary and you may need a special tool to read these fault codes.

This is what obdsol says:
“While STN1170 ST commands will provide access to SW-CAN and MS-CAN networks, the proprietary GM & Ford codes must be obtained independently. A popular method is to join the Equipment and Tool Institute where the codes can be accessed/purchased. Alternately, the traffic can be analyzed and reverse engineered.”

BUT there are some users that have used non-torque software called SCANXL to look at other codes:
https://www.scantool.net/forum/index.php?topic=7344.0
and
https://www.scantool.net/forum/index.php?topic=6922.0
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