Leaderboard

Morning Nick Looks like you have a transmission fault😁 either the Gearbox is in Limp mode or it won't select gears. The Diagnostics (looks like ISTA) are telling you where the issues are, work through them and clear them one by one, often faults are related clear one and others disappear. The main highlighted fault state is No Communication with the Gearbox Control Unit. I would start with the Gearbox fuses check them all, next the wiring loom (continuity) and the gearbox connector, unplug it and check and clean all the pins (good electrical contact cleaner) Next are there any signs of leaks from the connector plug seals check the fluid level. Note: Your box is I believe GM so make sure if topping up you have the correct fluids. Better to carryout a full service if not already done. I have read that some early GM boxes had Mechatronic issues the needed a replacement unit (not cheap) so fingers crossed. Dave