I installed a new battery yesterday and now my car is throwing this "DTE FLI DATA ERR". Headlights/turn signals wont turn on, and also says fuel level low, oil level low, brake fluid low, emergency brake on. It was also stuck in Park so I had to push the little button to move it in gear.

I've tried disconnecting the battery for 10 min., re-loading my tune back with the SCT2, and I still have this problem.

Any suggestions what this problem could be?

 

I've done research and it could be the fuel sending unit, but is there any way I can at least have my headlights turn on so I can drive?

 

best bet is to check all fuses in the passenger kick area and
the engine bay. if you had a service manual you could look up
which fuse it is, but checking them all is pretty easy.