A/C - Insufficient Heat, New Heater Core

9218chevy02

Number: 89-269-1A

Section: 1A

Date: October 1989

Corporate Bulletin No.: 961102


Subject:
IMPROVED HEAT


Model and Year:
1989 C, K TRUCKS


TO: ALL CHEVROLET DEALERS

Some owners of 1988-89 C/K trucks may comment regarding a lack of sufficient heat from their heaters. For improved heating, a revised heater core has been released to production after the following VIN breakpoints that will increase heater output 5 - 8 degrees F (2.5 - 4.5 degrees C).

OSHAWA 2GCGK29K3K1212682

FT. WAYNE 1GCDC14K2KZ239512

PONTIAC 1GCFK24K0KE232454

The new heater core has 38 fins/inch verses 30 fins/inch on the old heater core. Some reduction in air flow may be noticed.

Parts are currently available from GMSPO.

Base heater -- 52452918

With A/C or
Deluxe heater -- 52452915


For repairs to vehicles under warranty use the appropriate labor operations and times from the labor time guide.