If the dolly has electric brakes it might work with it. Most dollies have either electric, or inertia driven (surge) braking.
I don't think it will work flat towing a vehicle, but that's just a guess.
2015 Equinox requires a towing package to flat tow, according to some towing guides (Trailer Life), and others suggest puling fuses and running the engine 5 minutes before starting and at each fuel stop (Dinghy towing guide). Consult OM for precise requirements.
2018 (2017 Sprinter Cab Chassis) Navion24V + 2016 Wrangler JKU (sold @ ????) - 2016 Sunstar 26HE (sold @ 4600 miles) - 2002 Roadtrek C190P (sold @ 315,000kms)