Heater Core: Service Precautions
CAUTION:^ DO NOT ATTEMPT TO OPEN COOLANT CAP WHILE COOLING SYSTEM IS UNDER PRESSURE.
^ MAKE SURE VEHICLE IS PROPERLY SUPPORTED AND SQUARELY POSITIONED ON THE HOIST. TO HELP AVOID PERSONAL INJURY WHEN A VEHICLE IS ON A HOIST, PROVIDE ADDITIONAL SUPPORT FOR THE VEHICLE ON THE OPPOSITE END FROM WHICH COMPONENTS ARE BEING REMOVED.