Bonneville V6-3800 38L Supercharged (1992) - Expansion Block/Orifice Tube Installation
Expansion Block/Orifice Tube: Technical Service Bulletins
Expansion (Orifice) Tube - Revised Installation
Group Ref.: HVAC
Bulletin No.: 431201
Date: January, 1994
SERVICE MANUAL UPDATE
SUBJECT:
SECTION 1B OR ESM - REVISION TO ON-VEHICLE SERVICE FOR EXPANSION (ORIFICE) TUBE
MODELS:
1992-94 BUICK PARK AVENUE AND LESABRE
1992-94 OLDSMOBILE NINETY EIGHT AND EIGHTY EIGHT
1992-94 PONTIAC BONNEVILLE
When using the On-Vehicle service for the expansion tube, ("Install or Connect" procedure), the Service Manual states that the expansion tube should be
installed with the short screen toward the condenser. This is incorrect. The expansion tube should be installed with the short screen toward the
evaporator.
