2000 Siverado 4.3 coolent flush ?

Discussion in 'Maintenance & Upkeep' started by HDDOC, Jan 4, 2013.

  1. HDDOC

    HDDOC New Member

    New to me 2000 silverado 4.3 with 81,000 on the clock, going to go thru this truck front to back as I have no info from former owner on iy, Cooling system has green coolant and have no idea when it was changed last, tank is stain red but has green coolant in it. I want to flush it all out and clean the tank. No radiator cap on top of radiator, how do I clean this tank and flush the whole cooling system out.? Thanks Doc

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