I have been given an LQ9 to get running in a converted vehicle and can only get 20% throttle, it is LS1B. The throttle pedal and TAC ecm is from a VZ along with the loom (not the throttle body). It dosen't log throttle faults but there is a problem in the data.

STATE16-APP12 Accelerator Pedal Position 1&2 Disagree Disagree Disagree Disagree GM.STATE16

I have had difficulty in finding reasonable wiring but given the infomation I have the wiring to the pedal is correct. It may be the case the pedal and TAC need to come from the same vehicle as the throttle. The problem is the same whether an LQ9 or VZ 5.7 Holden cal is used.

any clues as to the criteria that sets this?

Joel