[Gmecm] Class2 DIY tools?

[Steve Ravet]

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Jay Vessels
> Sent: Sunday, January 08, 2006 9:39 AM
> To: gmecm at diy-efi.org
> Subject: [Gmecm] Class2 DIY tools?
> 
> Hi there!
> 
> Are there any consumer tools that will talk over the Class 2 
> bus on a GM
>   light truck that will communicate with the IPC and BCM?  
> I'm thinking of tools that would do some of the tests that I 
> can do with a Tech2 (i.e. command IPC to turn on/off 
> indicator lamps, command fuel guage to full or empty, read 
> BCM DTCs, etc.)  I haven't done an exhaustive search, but it 
> seems most tools outside of the Tech2 will either only read 
> and clear DTCs, or they are geared to primarily gather 
> powertrain data.

Jay, how DIY do you want it to be?  Darren and I are working on a USB
<-> VPW cable, with scan tool/reflashing software that runs on the PC.
The cable is straightforward, the scan tool software maybe less so.  Do
you know if the BCM and IPC communication messages are documented in the
SAE specs?

On full size pickups (SBC vortecs, that is) the fuel gauge is driven by
the PCM, not via class2.  Are you sure yours is class2?

--steve


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