Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Sometimes you have to look harder and have experience. I dismantled a Toyota Crown when building my 1936 Chev hot rod. The Crown had hydraulic power steering, but also had a crude form of ESC. While dismantling the steering column I came across 3 wires going to the ABS controller. According to the only source of info (the web...) the only diagrams were hand drawn and had VSS writen againt those wires. The write-up said it was connected to the dash and was a speed sensor. Nup. I pulled the steering column apart and found a pot (variable resistor) connected to the steering column that varied resistance according to the steering angle. (Irrelevant here) but that "sensor" is just a flat disc with a hole in the middle and 3 wires. Maybe a similar sensor can be wired into a circuit that supplies a varying voltage (negative and positive) to feed to the electric rack? Tyhe rack itself would need to know when the steering wheel is being turned at least, so it must have inputs for power and ground, plus more to "tell" it which way to turn the wheels. It would also have to be absolutele zero play in the system because you still need "feel" and feedback. (ie, you don't want it so active that any movement off centre results in a full lock situation.
" You do not have permission to view sharing information for this item."
Could possibly be done if you get the sensor but you need the brake control module(K17) , instrument cluster (P16) and BCM as well. This is per the VF schematics and as mentioned, Holden have routed these mission critical steering signals through multiple plugs and sockets to the steering computor which talks to the rack using CAN bus. So its not such a simple idea to reverse engineer the system. Maybe getting these components from a wrecked car (with the loom) and you could get it working.
