after many hours chasing wires, I found the diagnostic connector routed clear up by the fuse/relay box under R/H front fender. Joyner said it should be near the ECU "not". On the mid production 08 models it is, but on the first run of machine they forgot to re-route it to the back. This is a 3 wire connector that doesn't have any thing hooked to it. It is only usefull if you have the scanner. This info is mostly aimed at dealers who might be having trouble finding the diag. port. I also had to remove 2 of the 3 wires from the connector to get data to flow. The center and one of the 2 end ones. I had to trace wire color from ECU to determine which wire was diag. lead. On this particular machine it is the yellow wire, disconect the other two. Good luck A.

Hello Anyliser,
I found this plug is also near the fuses located on this plug all ODB2 protocol?
What color are the wires? For me, there are black, yellow and white.

Regards

Udo

You can use this connector to read out trouble codes. Be aware that the protocol is not OBD2 but the GM/Opel/Vauxhall proprietary one.

Black is GND, Red is +Bat, Pale Pink is the K-line (fits pin 7 of the OBD2 socket).

This is the read out of my 1100 sand viper: