A/C System - Heater Case Hot Spot

91chevy16

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.