C 1500 Truck 2WD V8-350 5.7L (1989)
Heater Core Case: All Technical Service Bulletins
Heater Case - Hot Spot on Passenger Side
Number:
91-313-1A
Section:
1A
Date:
MAY 1991
Corporate Bulletin No.: 061102
Subject:
UNDER-DASH HEATER CASE HOT SPOT
Model and Year:
1988-91 C/K TRUCKS
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.
Trouble Code:
92
