Installed a Greddy TT on a 03 350z this weekend and it runs great with one problem. The "VDC Off" and "Slip" lights come on (and stays on) after you start. It seems to reset itself after you turn the engine off but comes on again after the engine is restarted and start moving???? Looks like all the connections are correct. Anyone seen this before?????

 

You more than likely did not get your steering shaft U-Joint on perfectly. Your steering column has a position sensor on it that the VDC system uses. If it detects that it is not calibrated correctly, when you start to pull away the car will jerk and buck for a breif moment and then the VDC and SLIP lights come on. It resets every time you start the car, so it will do it every time.

So basically, you probably put the U-joint on 1 or 2 teeth off.

 

I marked the location prior to removing but may be off. I'll try again. Thanxs Are you using the Greddy TT kit???

 

just a follow up to what phunk said.. and some extra reading

https://my350z.com/forum/forced-induction/190335-aps-tt-slip-vdc-light-issue.html