C 1500 Truck 2WD V8-305 5.0L VIN F 4-bbl (1985)
Engine Mount: All Technical Service Bulletins
Interior - Vehicle Vibration Between 35-55 MPH
85-113
6
AUG., 1985
Subject:
VEHICLE VIBRATION
Model and Year:
1983-85 C10-20 WITH 5.OL AND 5.7L ENGINES
TO:
ALL CHEVROLET DEALERS
Some 1983-85 C10-20 series trucks may experience a vehicle vibration (a light shake or "buzzing" in the seat or dash area) condition between 35-55
mph. This condition is usually more pronounced if the vehicle is not loaded.
Refer to Sections 3E and 4A of the Light Duty Service manual for procedures on checking wheels, tires and propshafts. If these procedures do not
correct the condition, the following parts may be installed:
Figure No. 1
1983 Models
Replace the cab body mounts with mounts for the 1984-85 trucks.
Part Number
Description
Quantity Required
15597600
Upper Cushion
4
15597629
Lower Cushion
4
14027472
Retainer
4
See Figure No.
1