Almost Every thing in front dash has to come out the car
are you sure its the heatre core no good ?
Drain engine coolant
remove heater hoses at fire wall and plug
remove 3 retaining nuts under hood (fire wall)
remove instrument panel
remove right side retaining screw
remove remaining nut under dash panel stud
disconnect blue connector from plenum
remove heater assembly from car
remove clips and screws
good luck

Answered by BMRFIXIT (expert)
19,736 answers provided