Chevy

rvseverson

I was going to do the 60 month/150K coolant change but haven't found any good information on how to accomplish this. The Haynes manual is useless. Says to drain the radiator & reserve tank and refill. Well you only get 3 of the 8.2 quarts out. The rest is stuck in the block behind the thermostat & in the heater core. I've found some references to a block drain plug near the water pump but the information is elusive. An extensive Google search and nothing useful. Then how about the heater core? Thanks

TARDIS B

Yes, not much information about this. I've just seen to drain the lower hose and refill. I guess doing this annually would do the job. Mine is also a 2015 and due for coolant change but finding information is next to impossible.

christian.wood

There's a drain plug on your water pump. Take off your overflow reservoir cap, open your petcock, and take the plug out of the water pump.

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