Grand Prix V6-191 3.1L (1989)
Technical Service Bulletin # 90118
Date: 900601
A/C - Odors Emitted at Start Up in Hot Humid Climates
Bulletin Number:
90-1-18
Reference Number:
031208
Publish Date:
6/90
Subject:
A/C ODOR (CLEANING PROCEDURE AND AFTERBLOW MODULE)
Models
Affected:
1988-90 GRAND PRIX MODELS - ALL ENGINES, ALL TRANSMISSIONS
CONDITION:
Odors emitted from the air conditioning System primarily at start up in hot, humid Climates.
CAUSE:
Debris in the heater/evaporator case and/or microbial growth on the evaporator core.
CORRECTION:
Clean the evaporator core and install an afterblow module, using the following equipment and procedure. REQUIRED EQUIPMENT
^
GM Goodwrench air conditioning System disinfectant kit P/N 25533404
^
Kent-Moore tool J-36645 air conditioning System cleaning gun
^
Rubber Gloves and Safety Goggles (ordinary safety glasses are not sufficient)
^
Pedestal Fan
^
Afterblow Module, P/N 25533406
^
A seven (7) ft. length of green 18 ga. *electrical wire.
Parts are currently available from GMSPO.
*Purchase locally.
CAUTION:
Safety goggles must be worn. The disinfectant may cause substantial, but temporary, eye injury. Do not get in eyes or on Clothing. Wash
thoroughly with soap and water after handling.
FIRST AID:
If disinfectant gets into eyes, hold eyelids open and flush steady stream of water for fifteen (15) minutes. Obtain medical
attention if irritation persists.
Procedure:
1.
Raise vehicle and remove the rubber A/C drain tube.
2.
Disconnect the negative battery cable.
3.
On Vehicles with V6 engines (VIN codes T & W), it will be necessary to rotate and secure the engine in the forward service position as specified
in the Service Manual, page 6A5-2 (1989-90), 6A3-7 (1988).
4.
On 1988 & 89 vehicles, remove the upper attachments (Pal Nuts) of the secondary metal dash panel and pull the panel forward.
5.
Remove the upper and side splash shields of the R.H. fender well for access to the R.H. Electrical Center and ECM.
6.
Remove the A/C evaporator core from the vehicle. Use the appropriate Service Manual procedures on the removal of the evaporator core.
