Heater core

Drain coolant from radiator.
Disconnect heater hoses from heater core, and plug openings.
In passenger compartment, remove instrument panel. See INSTRUMENT PANEL BELOW.
Remove plenum assembly.
Remove heater core from plenum assembly.
To install, reverse removal procedure.
Removal & Installation
Disconnect negative battery cable.
Disconnect wiring connectors in engine compartment.
Remove 2 bolts retaining hood latch control handle and cable. Remove 2 bolts attaching parking brake release.
Remove console (if equipped).
Move transfer case control to far forward position (if equipped).
Remove instrument panel steering column cover by removing 2 screws and pulling on cover to release grasshopper clips.
Remove bracket bolt at right of accelerator pedal.
Remove instrument panel steering column reinforcement (6 screws).
Remove 2 TK yoke nuts from vehicle cross beam, and remove TK yoke.
Open fuse panel door, and remove 2 bolts holding instrument panel to cowl.
Remove bolt from right side of instrument panel.
Remove one threadless fastener and 2 push-pins attaching insulator to lower right hand instrument panel.
Carefully lift edge of defroster grille, and pull up on grille to release clips and tension tabs. Remove defroster grille. Remove 4 bolts at top of instrument panel.
Pull panel back from cowl.
To install, reverse removal procedure.
PLENUM ASSEMBLY
Removal & Installation
Disconnect negative battery cable.
In passenger compartment, remove instrument panel.
Remove heater hoses from heater core, and plug hoses.
Remove blower motor assembly.
Remove nuts from plenum studs at firewall in engine compartment. Pull plenum away from firewall, and remove plenum assembly.