1993 DeVille antenna goes up and then down radios shuts off

recheck the wiring and connections and check for a proper earth wire on the antenna unit

Find access to where the antenna motor is, and visually inspect/trace what kind of electrical connection there is going to it. It may be a simple unplugging of two connectors. I am suspecting that the antenna motor and the radio share the same fuse, as the power from the radio passes thru to the antenna motor when the radio gets turned on. So, can't just pull the fuse. But if there is a fuse JUST for the antenna, then pull it out.

There are plastic gears in the power antenna motor that strip out over time and when a large load is placed on them. The motor will need to be replaced or you might be able to take it apart and replace just the gears.

no fixes John,
only two choices now,send the radio to some expensive shop,or replace it with a salvage yard one.

The on and off switch is bad , had same problem. Look up M&R electronics on web, will repair for about 100.00.

Have the antenna motor tested re place it if not working if antenna motor is working you will need a new antenna mast and antenna cable to remove this unscrew the washer nut at the base of the antenna and turn radio on antenna should push up and play out he cable to replace insert new cable and turn radio off it will draw cable in and antenna tighten washer nut and your dne

check the antenna cable connections.if all is good you could have problems in the AM and FM ANTENNA MODULE.

Sounds like you just have a bad connection at radio power wire. Check radio fuse first to make sure it's o.k. but then you'll have to get someone to trace power wire to back of radio & check connections.

Have you checked the fuse for the radio? And, sometimes the antenna comes out of the back of the radio also. The radio uses the antenna for a ground. I sincerely hope that I helped you with this Problem. Take care and God Bless.

oil the antenna and its connection with dieelectric grease in trunk on passenger side pull carpet off side antenna access there reverse process to assemble