GMTDScan

[Badaxe]

I've got the cable, downloaded the software, but no license #. Not being cheap, just broke. Is there a "free" way to do this? Fixin' to do IP and such.

 

[NVW]

There is the free version to read the codes and sensors, you need the paid version to set timing.

 

[4thesporty]

What he said. It is well worth the money the first time you see how far out your TDCO is.

 

[Badaxe]

Well I've tried to run the Basic Scan and get an error on Com 1, 3, and 4. During the Com 7 test there are no problems. Stefan Engh said, "If Com7 tests good that is probably what you should use and not Com1." So how do I do that? I was hoping to run the scan before digging into my to-do list, but the FFM sprung a major fuel leak today so the top end came off today.

 

[NVW]

Under the tools tab is a settings tab. Make sure you have the right Com port set.

Also in the Devise Manager in your Control Panel, it has to be set to the same Com Port.

 

[Badaxe]

Done. Now I just have to wait(not too long, only vehicle I've got) till it gets put back together when I get around to injectors, FTB, new fuel lines, possibly IP.

 

[Badaxe]

So it's finally back together and I was able to run GMTDScan Basic. Readings vs guages were a little off. Scan reads RPM 250 higher, 1 MPH slower, and boost about .5 psi higher. My TDC reads at -.44. What parameters to I need to be watching or looking for?

 

[ak diesel driver]

your tach is probably off because you have the wrong pulley on the alternator. your TDCO number is in the ballpark IIRC the factory specs are -.35 to -.75