SIDE DOOR LATERAL(RATTLE) INSTALL HOOD BUMPER ASSEMBLY

VEHICLES AFFECTED: 1984 Chevrolet Corvette

Some 1984 Corvettes may experience lateral side door movement with the side window rolled down.

To correct these vehicles, the following steps are to be performed:

DOOR GUIDE PIN IDENTIFICATION

Early built vehicles have 35mm (1 3/8 inch) long door pin assemblies. If the vehicle is equipped with the 35mm (1 3/8 inch) long pins, it will be necessary to install the pin assembly, P/N 14060282, which is a shorter design (25mm (1 inch) long).

NOTICE: Door pin replacesent will require the removal of the door trim panel. Do not replace the door trim panel at this time.

DOOR GUIDE PIN SYSTEM ADJUSTMENT

Verify the plastic sleeve is installed in the pin locator assembly. With the vehicle door closed, loosen the locators three (3) attaching bolts (see Figure 1). The locator assembly is to be centered fore-aft and vertically on the door pin. Push the locator outboard to fully engage the door pin and tighten the locator attaching bolts to 11 N.m (8 ft. lbs.)

Check the door for lateral movement. If a satisfactory condition has not been achieved, the following steps are to be performed.

INSTALLATION OF P/N 14051108, HOOD BUMPER ASSEMBLY IN PLACE OF THE PRODUCTION DOOR OVERSLAM BUMPER --------------------- Some early built vehicles did not have the overslam bumpers. If this is the case, it will be necessary to drill a 7mm (9/32 inch) hole in the door (see Figure 2).

If the vehicle has the overslam bumpers, remove and discard the bumper(s) (one/door).

Replace the discarded production bumper(s) with bumper, P/N 14051108, attaching nut, P/N 11508276, and P/N 14072667, flat washers, which are to be used as bumper shims. The number of shims required will vary from vehicle to vehicle depending on the 'build stacks'.

Add the shims (washers) between the bumper and the door, as required, to eliminate the lateral door movement (see Figure 2). DO NOT 'OVERSHIM' THE BUMPER.

Once the shim pack has been established, tighten the bumper retaining nut to 12 N.m (9 ft. lbs. ) and check the door ajar lamp for proper operation. The door ajar switch is self adjusting and cannot be reset.

If the door ajar lamp does not turn off when the door is fully closed or flashes on-off on rough roads, it will be necessary to replace the, P/N 14062556, switch assembly, Reinstall the trim panels.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.