Beretta L4-121 2.0L (1987)
Air Duct: All Technical Service Bulletins
A/C - Poor Heater Performance
Number:
88-102-1A
Section:
1A
Date:
DEC., 1987
Subject:
POOR HEATER PERFORMANCE
Model and Year:
1987-88 BERETTA, CORSICA
TO:
ALL CHEVROLET DEALERS
Some customers may comment of poor heater performance in the area of the rear seats, mainly the left rear.
If the heater system is operating properly with adequate heat in the front seat area, the problem may be caused by poor heat/air distribution from the floor
heater outlet.
This condition can be improved by replacing the existing floor heater outlet with one of the following new parts.
Part Name
Part Number
Heater Outlet Assy.
10065639
(No A/C)
Heater Outlet Assy.
10065788
(With A/C)
The breakpoint for vehicles with the new outlet assembly at both assembly plants, is VIN 500000.
Use applicable labor operation time.