B2500 SE Regular Cab 2WD L4-2.5L VIN C (1998)
10. Disconnect the A/C cycling switch connector.
11. Disconnect blower motor electrical connector.
12. Disconnect the blower motor resistor connector.
13. Disengage the windshield washer hose retainer and position aside.
14. Disconnect the vacuum hose.
15. Disconnect the vacuum hose from the retainer and position aside.
16. Disconnect the vacuum harness connector and nut located in the passenger compartment.
17. Remove the nuts and remove the evaporator core housing.
18. Install in reverse order of removal.