1997 GMC Suburban Owner's Manual - Page 310

Checking Coolant Adding Coolant If you need more coolant, add the proper DEX-COOL@ coolant mixture ut the coolantrecovery tunk. L Turning the radiator pressure cap when the engine and radiator are hot can steam and allow scalding liquids to blow out and burn you badly. With the coolant recovery tank, will almost you never have to add coolant at the radiator. Never turn the radiator pressure cap even a little when the engineand radiator are hot. I -- -- The coolant recovery tank is located on the passenger's side at the rear corner of the engine compartment. When your engine is cold, the coolant level should be at the COLD mark, or a little higher. When your engine is warm, the level should be up to the HOT mark, or a little higher. Add coolant mixture at the recovery tank, but be careful not to spill it. m ... You can be burnedif you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot enough. Don't spill coolant on a hot engine. 6-28