Lumina APV V6-191 3.1L (1990)
Heater Core: Technical Service Bulletins
Heater Core - Revised Service Procedure
Number: 93-85-1A
Section: 1A
Date: JAN. 1992
Corporate Bulletin No.: 231103R
ASE No.: A7
Subject:
HEATER CORE
Model and Year:
1990-93 LUMINA APV
SERVICE UPDATE
This bulletin revises the front heater core and cover procedures found in Sections 1A or 1B of the 1990-93 U-Van Service Manuals. Use this procedure
whenever service of the heater core is necessary.
APPLICATION:
1990 THROUGH 1993 CHEVROLET LUMINA APV AND APV CARGO
HEATER CORE (FRONT) Figures 1 through 9
Remove or Disconnect
-- Drain engine coolant. Refer to SECTION 6B.
1.
Two screws (838) attaching RH windshield wiper transmission (837) arm to windshield wiper frame (836) (Figure 1).
-- Move RH windshield wiper transmission arm aside to gain access to heater hoses.
