Can anyone tell me how the GM/Chevy dealers do an engine flush? They say they use a machine hook up to flush and fill. Where do they connect the machine, I assume on heater hoses, and is it a good procedure?
My Chevy dealer used a BG machine and it did a fantastic job. Cooling system is spotless and the new DEXCOOl is bright red again! The machine took all the old fluid out, ran a cleaner thru the cooling system for a flush, then reinstalled new DEXCOOL in the system. The flush cycle really cleaned out the system, including the heater core. $119.99 and I feel well worth it. Did it on my 2006 Impala SS with just under 30,000 mi. and three years old.