C 2500 Truck 2WD V8-454 7.4L (1988)
Truck Bed: All Technical Service Bulletins
Truck Bed - Rattle At Front Panel
GMC NUMBER:
88-T-22
GROUP:
10 - Body Section
DATE:
June, 1987
CORPORATE
NUMBER:
861504
SUBJECT:
PICKUP BOX RATTLE AT FRONT PANEL
MODELS:
1988 C/K MODELS
Some 1988 C/K models may develop a rattling sound from where the pickup box front and side panels join together. To eliminate this condition, a
service procedure has been developed to weld a portion of the pickup box side panel to the pickup box front panel.
SERVICE PROCEDURE
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Disconnect negative battery cable.
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Remove bolts holding the neck of the fuel filler tube to the side panel.
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Raise and support the vehicle.
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Disconnect taillamp wiring harness and ground strap at frame rail.
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Remove eight bolts holding box to the frame rails.
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Slide box rearward on frame rails to get enough access to work on the front end panel. Support back of box.
FIGURE NO. 1
WELDING AND METAL FINISHING
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Using a knife or pointed tool, remove all sealer and aluminum shims where the front panel fits into the side panels (Figure No. 1). Failure to
remove all sealer will result in weld splatter or pitting.
