K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Heater Core Case: Customer Interest
A/C System - Heater Case Hot Spot
GMC NUMBER:
91-1A-103
GROUP:
1A Heating and Ventilation
DATE:
June, 1991
CORPORATE
NUMBER:
061102
SUBJECT:
UNDER-DASH HEATER CASE HOT SPOT
MODELS:
1988-91 C/K PICKUPS
Some 1988-91 C/K pickups may experience a heater case hot spot in the passenger side floor area. If this condition is encountered, a newly released
insulator may be installed on the heater case.
SERVICE PROCEDURE
1. Clean heater case with brake cleaner to allow insulator to adhere to surface.
2. Fold insulator to the shape of heater case.
3. Align edges of insulator to heater box before installation.
4. Peel backing off insulator and install insulator to heater case.
SERVICE PARTS INFORMATION
Part Number
Description
Quantity
15646548
Insulator
1
Parts are currently available from GMSPO.
WARRANTY INFORMATION For vehicles repaired under warranty use:
LABOR OPERATION: T7196
LABOR TIME:
0.2 hr.
NOTE:
Labor Operation is coded to base vehicle coverage in the warranty system.
