REPLACEMENT MAST FOR POWER ANTENNA (PROCEDURE AND P/N)

Model and Year: 1987/88 CORVETTE WITH POWER ANTENNA

A power antenna mast that has been bent or broken may be repaired using a replacement mast rather than replacing the entire power antenna assembly. A broken drive cable condition may also be repaired with a replaceable mast, but removal of the complete antenna assembly may be required to insure all pieces of the drive cable have been removed.

The following replacement mast is currently available from GMSPO:

P/N 22535396 (Black Tip)

MAST REPLACEMENT PROCEDURE:

1. Remove the mast retaining nut with the wrench supplied with the service kit.

2. Turn the radio on to activate the antenna to the up position and remove the mast assembly.

a). Do not manually pull the mast.

b). Antenna mast contact spring located on the bottom mast section will be reused. Clean the spring with contact cleaner and set aside for later use.

3. Insert new mast and cable assembly into antenna housing, beginning with the cable.

NOTICE: THE SERRATED SIDE OF THE PLASTIC DRIVE CABLE MUST FACE THE MOTOR HOUSING OF THE ANTENNA (REAR OF THE CAR) TO PREVENT POSSIBLE DAMAGE TO THE MOTOR ASSEMBLY.

4. Insert mast section into the antenna housing while the cable is retracting and reinstall the contact spring onto the mast. Make certain the flanged end of the contact spring faces upward.

5. Reinstall and tighten th e antenna retaining nut.

6. Cycle the antenna severa l times to insure proper operation.

NOTICE: THE AUTOMATIC ANTENNA MAY ONLY EXTEND OR RETRACT PARTIALLY. CONTINUE TO OPERATE UNTIL IT WILL FULLY EXTEND AND RETRACT.

Labor Operation Number: R042-0

Labor Time: .2 Hours

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.