4.3L, 4.8L, 5.3L, 6.0L Engines
Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
- Before servicing the vehicle, refer to the Precautions Section.
- Disconnect the negative battery cable.
Remove the upper radiator fan shroud.
- Drain the cooling system.
- If equipped, remove the upper panel fasteners and the panel.
- If equipped, remove the upper insulators and brackets.
- Disconnect the radiator upper and lower hoses and, if applicable, the transmission coolant lines.
- Remove the coolant recovery system line, if so equipped.
- Remove the oil coolant lines, if equipped.
- Remove the lower fan shroud bolts and the lower fan shroud.
Remove radiator from the lower brackets and insulators.
- Install the radiator on the lower brackets and insulators.
- Install the lower fan shroud and its retaining bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
- Attach and tighten the engine oil cooler pipe bolts to 18 ft. lbs. (24 Nm) and the transmission oil cooler bolts to 19 ft. lbs. (26 Nm).
- Attach the lower and upper radiator hoses.
- Install the upper insulators, the upper fan shroud and fan shroud bolts. Tighten the shroud bolts to 71 inch lbs. (9 Nm).
- Attach the coolant recovery system line, if so equipped.
- If equipped, install the upper panel fasteners.
- Be sure to fill the radiator with the proper grade and type coolant.
- Start the engine and check for leaks, correct as required.