The Brad Jones Racing Supercars race winner will co-drive with production car front-runner Dylan Thomas in a Mitsubishi Lancer Evo X.
Slade is the latest Supercars star to tackle the race following Chaz Mostert's victory in this year's inaugural event alongside Nathan Morcom.
“I worked with Tim Slade when we both drove for Sonic Motor Racing Services at the Porsche Rennsport Festival earlier this year,” explained Thomas.
“He rang me up to ask if there was an opportunity to drive in the 6 Hour and we were able to accommodate him.
“Tim was super-fast in the Bathurst 1000 this year and he also set the record at World Time Attack at Sydney Motorsport Park, so he has the ability to jump in different cars and be fast in all of them.”
“The CXC Global Racing team is an established operation with a reliable car,” he said.
“There are other teams that will be running newer and potentially faster cars, but they are unproven. The CXC Evo will be a strong package.
“For someone who doesn't race professionally, Dylan is a very capable driver and his performances in the Carrera Cup endurance races the last couple of years, against some Pro drivers, have been outstanding.”
Slade will also return to the Bathurst 12 Hour in February alongside Tony Walls and Warren Luff in the Objective Racing McLaren.
Luff is another confirmed starter for the 6 Hour, set to drive this year's race winning BMW 335i alongside Leigh Burgess.