1978 - 1979 Corvette: Service Bulletin: Power Antenna Operation
Subject: Power Antenna Operation
Model and Year: 1978-79 Vehicles with CB or RPO U75
Source: Chevrolet Dealer Service Technical Bulletin
Bulletin No: 79-T-8
Date: April, 1979
TO: ALL CHEVROLET DEALERS
Extreme cold weather and/or excessive buildup of dirt/corrosion may cause a power antenna to stick and fail to extend or retract completely.
Complaint vehicles should be corrected as follows:
- Thaw unit as required if problem occurred during extremely cold weather.
- Extend mast. This may require manually assisting the mast when antenna unit is energized.
- Clean mast sections thoroughly to remove any water or dirt. Note: It may be necessary to use fine steel wool to remove any corrosion residue that may exist.
- Extend and retract antenna mast several times repeating steps 2 and 3 until mast stays clean and dry.
- With mast fully extended (triband - 36" from fender surface, A<-FM - 33" from fender surface), lubricate entire surface of mast sections liberally, especially the section joints, with one of the following:
- a. Spray silicone (Pen Ray or equivalent)
- b. Liquid graphite (Lock Ease or equivalent)
- Operate antenna up and down several times, then wipe off excess lubricant.
Time for correction: .2 hours.
Chevrolet Motor Division
General Motors Corporation
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.
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