The following article explains how to replace the AC evaporator core on a 2000 Dodge Grand Caravan.

Many thanks to Dodge Tech for posting the steps to replace the AC evaporator on a 1996-2000 Dodge Grand Caravan. I replaced the AC evap. on my 2000 Dodge Grand Caravan a few weeks ago and below are the instructions from Dodge Tech along with my pics:
(original post on Dodge Forums)

I added my pictures and comments to the article posted by: Dodge Tech.

INSTRUMENT PANEL The instrument panel is removed as a unit. The steering column and wiring harnesses are assembled into the panel before installation. Service procedures for interior trim not related to the instrument panel can be found in Group 23, Body. REMOVAL

[*]Disconnect and isolate the battery negative cable Battery Negative Cable

[*]Remove the lower console. Refer to Lower Console Removal and Installation in this section.

[*]Remove the screw holding the lower heat duct to the instrument panel support Heat Duct

[*]Disconnect the heat duct from the vehicle.

[*]Remove the bolts holding the lower supports to the instrument panel frame Lower Supports

[*]Remove the bolts holding the lower supports to the floor pan.

[*]Remove the right and left end covers. Refer to Instrument Panel Right and Left End Cover Removal and Installation in this section.

[*]Disconnect the wire connectors from the Passenger Airbag Module.

[*]Remove the right and left cowl trim covers. Refer to Group 23 Body, Cowl Trim Removal and Installation

[*]Remove the A-pillar trim covers.

[*]Remove the glove box. Refer to Glove Box Removal and Installation in this section.

[*]Disconnect the antenna lead connector from behind the glove box.

[*]Remove the lower steering column cover. Refer to Lower Steering Column Cover Removal and Installation in this section.

[*]Remove the knee blocker reinforcement. Refer to Knee Blocker Reinforcement Removal and Installation in this section.

[*]Disconnect the lower two, forty pin wire harness connectors, from the main Junction Block near left cowl side panel Junction Block and Body Control Module Connectors

[*]Disconnect the instrument panel wire harness connector from the bottom of Body Control Module.

[*]Disconnect the two forty pin connectors from the right of the steering column 40 Way Connectors Location

[*]Remove the clinch bolt holding upper the steering shaft to the lower steering shaft 40 Way Connectors Location

[*]Separate the upper steering shaft from the lower steering shaft.

[*]Remove the nuts holding the instrument panel frame to the die-cast brake pedal support on each side of the steering column.

**** IF MECHANICAL LINK FOR SHIFT INDICATOR****

[*]With mechanical transmission range indicator:

[*]Remove the indicator cable loop.

[*]Remove the clip holding gear shift cable end to the gear selector adapter.

[*]Pull the cable end from gear selector.

[*]Disconnect the clip for the indicator cable and guide tube from the shift cable bracket and move out of the way. [/ol]

[*]Remove the nut holding gear shift cable bracket to the instrument panel frame.

[*]Remove the bracket from the instrument panel.

[*]Remove the screw holding hood release handle to the instrument panel.

[*]Remove the bolt holding the hood release handle to the instrument panel.

[*]Position the hood release handle out of the way.

[*]Remove the instrument panel top cover. Refer to Instrument Panel Top Cover Removal and Installation in this section.

[*]Disconnect the wire connector from the HVAC wire harness behind the glove box area.

[*]Remove the bolts holding the instrument panel frame to the brackets on cowl side panels Passenger Side Instrument Panel and Driver's Side instrument Panel

[*]Loosen, but do not remove, the pivot bolts holding the instrument panel to the cowl panels.

[*]If equipped with electric mirrors, remove the left and right side view mirrors. Refer to Body, Removal and Installation, Side View Mirrors. Push the A-pillar harness grommets inboard.

[*]Remove the bolts holding the instrument panel frame to the dash panel below windshield opening.
( NOTE: after the top dash panel is gone, there will be bolts located in the area from speaker to speaker and near front edge of glass.)

[*]With the help of an assistant remove the instrument panel from vehicle.

HEATER A/C UNIT HOUSING REMOVAL: WARNING: IF EQUIPPED WITH AIR CONDITIONING, THE REFRIGERATION SYSTEM MUST BE COMPLETELY EMPTY BEFORE PROCEEDING.

[*]Set parking brake.

[*]Disconnect battery negative cable.

[*]Using a refrigerant recovery machine, remove refrigerant from the A/C system A/C Service Ports

[*]Remove wiper module. Refer to Group 8K, Windshield Wipers and Washers.
(Note: The entire "bucket" that holds all the wiper arms and motor needs to be removed. First remove the top plastic cowl - under wipers.)

Note Wiper Tray or "bucket" is gone.

[*]Pinch off rear heater lines if equipped.

[*]Drain engine coolant. Remove heater hoses at the heater core Heater Hoses Plug coolant lines.

[*]Remove suction and liquid lines at the expansion valve Expansion Valve Plate[*]Remove the Instrument Panel Assembly. Refer to Group 8E, Instrument Panel and Gauges.

[*]Remove heater ducts.

[*]Disconnect the two upper mounts from the upper reinforcement and the lower mount from the tunnel.

[*]Remove the (3) nuts (in the engine compartment) securing the unit to the dash panel HVAC Bolt-Up

[*]Disconnect the HVAC housing wiring harness.

[*]Pull the entire unit rearward until the studs on the unit clear the dash panel. Drop the unit down. Pull it rearward to remove it from vehicle.

My notes:

- Dissassemble heater/ac box:

Remove screws and pull apart:

Note placement of rubber on AC evaporator core:

[/ol] INSTALLATION

[*]For installation of the assembly, reverse the above procedures. Install new O-rings on plumbing inlets

Putting it back together:

[*]Evacuate and recharge the A/C system.

[*]Perform HVAC control Calibration Diagnostic and Cooldown test.[/ol]