Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Grille: All Technical Service Bulletins
Grill Mounting Tabs - Cracking
NUMBER:
86-B-84
GROUP:
2B-Light Duty Cab
DATE:
May, 1986
SUBJECT:
GRILLE MOUNTING TABS CRACK
MODELS:
1983-86 C/K TRUCKS
Some 1983-1986 C/K Trucks may experience a condition where the grille mounting tabs exhibit cracks or break off. To address this condition, the
valance panel and radiator grille assembly have been revised interim 1986. The changes incorporated in these parts will allow for the expansion and
contraction of the grille assembly due to temperature changes. The revised valance panel and radiator grille assembly were changed in production
beginning with the following vehicle identification breakpoints.
Assembly
Plant
GMC
Janesville
GJ506647
Flint
GF706504 (Pick-up)
GF505772 (Suburban)
Oshawa
G1512525
St. Louis
GS507791
The valance panel on affected 1983-86 C/K Trucks can be modified by slotting the two outboard grille mounting holes following the service procedure
below. Refer to the parts list for the revised assemblies.
SERVICE PROCEDURE
1.
Remove headlamp bezels and grille. Discard grille assembly if cracked or broken.
