Had my lift installed for sometime now, over a year, but the last 2-3 months the ABS/ESP/TC lights all ring in the same time, and clears random times later. In and out.
Now recently, the last week, theres been fluttering in rpm, like instantiously dropping 200-300 rpms, but just being a flutter. Not sure if its a coincidence or not, but it all started after the first snow storm. lol

 

Most likely an abs sensor.

 

Make sure your battery cables are tight. I had same issue

 

Cables are tight. I was thinking TPS

 

The the random lights could be clockspring. Mine would randomly turn on and off. It could be days or months between seeing the lights. I finally checked after the lights were on once and pulled a steering angle sensor code. That corrected the lights.

The flutter is something I still get but unrelated. It's happened since I bought it brand new off of the lot so I chalk it up the electronic throttle.

You clean your throttle body regularly, right? Fresh plug change to eliminate that possibility?

 

New plugs and wires two moths ago. Never cleaned the throttle body before. 60,000 miles. Never know is was somethingt that should be done to be honest

 

Be gentle with cleaning it and only used an electronic throttle body approved cleaner. Regular carb/ choke cleaner will NOT work here, it's too harsh.

It's not in the manual but it should be cleaned regularly. In other vehicles, it's been reported that the carbon deposits on the back side of the butterfly can because failure of the unit as really as 100k miles. I clean mine annually.