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Stuck power antenna

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Old Apr 16, 2021 | 11:10 PM
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Default Stuck power antenna

I have an ‘89 c4 corvette. The battery had a switch on the negative side to to turn it on and off. I had the radio on and the antenna was up. I was told to turn off the battery and then antenna stayed up as expected… but when I went to turn the battery back on and turn the radio off the antenna didn’t move. There is no humming or clicking. I tried turning it on and of and nothing changed and I had a had it go up and down over the less than the month I have had it. What can I do. Thanks in advance

Last edited by DM89; Apr 16, 2021 at 11:11 PM.
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Old Apr 16, 2021 | 11:38 PM
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Originally Posted by DM89
I have an ‘89 c4 corvette. The battery had a switch on the negative side to to turn it on and off. I had the radio on and the antenna was up. I was told to turn off the battery and then antenna stayed up as expected… but when I went to turn the battery back on and turn the radio off the antenna didn’t move. There is no humming or clicking. I tried turning it on and of and nothing changed and I had a had it go up and down over the less than the month I have had it. What can I do. Thanks in advance
Buy one of these and eliminate the whole damned thing:

Amazon.com: Bingfu Car Antenna Car Stereo FM AM Radio Antenna Car Adhesive Mount Hidden Patch Antenna for Vehicle Truck SUV Car Stereo in Dash Head Unit CD Media Receiver Player Audio HD Radio Tuner Amplifier: Car Electronics Amazon.com: Bingfu Car Antenna Car Stereo FM AM Radio Antenna Car Adhesive Mount Hidden Patch Antenna for Vehicle Truck SUV Car Stereo in Dash Head Unit CD Media Receiver Player Audio HD Radio Tuner Amplifier: Car Electronics


The power antenna is more trouble than it's worth.

After you eliminate it, glue the bezel down and fill the hole the mast comes up through with a black rubber vacuum hose cap and then never worry about it again.

Last edited by PacerX; Apr 16, 2021 at 11:40 PM.
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Old Apr 17, 2021 | 08:55 AM
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Originally Posted by DM89
I have an ‘89 c4 corvette. The battery had a switch on the negative side to to turn it on and off. I had the radio on and the antenna was up. I was told to turn off the battery and then antenna stayed up as expected… but when I went to turn the battery back on and turn the radio off the antenna didn’t move. There is no humming or clicking. I tried turning it on and of and nothing changed and I had a had it go up and down over the less than the month I have had it. What can I do. Thanks in advance
First thing I would check is to see if you have power to the antenna relay. It is located in the back under the rear trim ring just to the left of the hatch release. You get 12V to the green wire (term 3 on the relay) to raise the antenna, and 12V to the white wire (term 2 on the relay) to lower. It might be something as simple as a stuck relay.

Not everything has to be ripped out and redesigned or replaced when it fails.

Last edited by Red86Z51; Apr 17, 2021 at 08:56 AM.
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Old Apr 17, 2021 | 10:06 AM
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Originally Posted by Red86Z51

Not everything has to be ripped out and redesigned or replaced when it fails.
Let's just rip out the crap that's non-value added.

Let's see... Benefits of losing the power antenna...

1) Better reception: CHECK!
2) Lower weight: CHECK!
3) Virtually invisible mod: CHECK!
4) Less electrical load on the car: CHECK!
5) More reliable: CHECK!
6) Less expensive than replacement: CHECK!

Negatives... Well... You might not win a Bloomington Gold Award... Ummmm... Uhhhh...

That's it. That's all I got. No Bloomington Gold.

Last edited by PacerX; Apr 17, 2021 at 10:07 AM.
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Old Apr 17, 2021 | 11:03 AM
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Originally Posted by PacerX
Let's just rip out the crap that's non-value added.

Let's see... Benefits of losing the power antenna...

1) Better reception: CHECK!
2) Lower weight: CHECK!
3) Virtually invisible mod: CHECK!
4) Less electrical load on the car: CHECK!
5) More reliable: CHECK!
6) Less expensive than replacement: CHECK!

Negatives... Well... You might not win a Bloomington Gold Award... Ummmm... Uhhhh...

That's it. That's all I got. No Bloomington Gold.
Like the radio?
Would probably not like what else you've done to your car

Last edited by Cruisinfanatic; Apr 17, 2021 at 11:04 AM.
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Old Apr 17, 2021 | 01:23 PM
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Originally Posted by PacerX
Let's just rip out the crap that's non-value added.

Let's see... Benefits of losing the power antenna...

1) Better reception: CHECK!
2) Lower weight: CHECK!
3) Virtually invisible mod: CHECK!
4) Less electrical load on the car: CHECK!
6) Less expensive than replacement: CHECK!

Negatives... Well... You might not win a Bloomington Gold Award... Ummmm... Uhhhh...

That's it. That's all I got. No Bloomington Gold.
Well, since your reply was in response to my post to the OP, allow me to address your points:

1) Better reception: CHECK! Have you actually compared the reception range to that of the stock antenna? What's the distance difference in miles?
2) Lower weight: CHECK! Oh yeah, right, because the stock antenna weighs SO much! Lose it and I can gain .0001 HP and be so much more aerodynamic.
3) Virtually invisible mod: CHECK! With the exception of a natural looking "black rubber vacuum hose cap" stuffed into the rear 1/4.
4) Less electrical load on the car: CHECK! Oh sure, because the stock antenna draws SO much power...my alternator will live forever!!
5) More reliable: CHECK! Maybe...if your that worried your antenna might fail once every 10 years or so.
6) Less expensive than replacement: CHECK! Who said the OP's antenna needed to be replaced?? Sounds like a lot MORE work than simple diagnosis and repair.

Now we both know where each of us stands. I repair what's failing and you rip stuff out and modify. To each his own.

The OP didn't ask for advice on gutting stock components and replacing with aftermarket parts. He asked for direction in diagnosing his problem. That's what I did.

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Old Apr 17, 2021 | 05:09 PM
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Originally Posted by PacerX
Let's just rip out the crap that's non-value added.

Let's see... Benefits of losing the power antenna...

1) Better reception: CHECK!
2) Lower weight: CHECK!
3) Virtually invisible mod: CHECK!
4) Less electrical load on the car: CHECK!
5) More reliable: CHECK!
6) Less expensive than replacement: CHECK!

Negatives... Well... You might not win a Bloomington Gold Award... Ummmm... Uhhhh...

That's it. That's all I got. No Bloomington Gold.
Going through the carwash, you don't have that "OH! ****!!!" moment when you realize the brush hits the antenna. And every so often, you don't have to lube the shaft and rub it up and down.......

Last edited by aklim; Apr 17, 2021 at 05:10 PM.
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Old Apr 17, 2021 | 05:38 PM
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Originally Posted by aklim
Going through the carwash, you don't have that "OH! ****!!!" moment when you realize the brush hits the antenna. And every so often, you don't have to lube the shaft and rub it up and down.......
@aklim , you're not wrong. In fact I have a replacement mast on the way for that very reason.

Jerry
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Old Apr 17, 2021 | 05:39 PM
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OP, forgive me if this is obvious but did you check the fuse?

Jerry
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Old Apr 18, 2021 | 08:00 AM
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Originally Posted by Cruisinfanatic
Like the radio?
Would probably not like what else you've done to your car
Given advancement in radio tech... Bluetooth, Android/Apple integration, backup cameras, etc... There are solid reasons to sh!tcan that too... Along with the hopelessly out of date Bose amplified speakers.

As far as what I've done with my car goes, it'll never need a power antenna replaced again, that's for sure!

Pic of antenna grommet:


Oh look... I also offended the Corvette Originality Crowd by getting rid of the incandescents and replacing them with brighter, lower current draw, more reliable LED's... Which are a perfect example of the same outlook... Keep it OEM if it makes sense relative to FUNCTION, replace it with newer, better tech when it doesn't:



Last edited by PacerX; Apr 18, 2021 at 08:29 AM.
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Old Apr 18, 2021 | 08:07 AM
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Originally Posted by Red86Z51
Well, since your reply was in response to my post to the OP, allow me to address your points:

1) Better reception: CHECK! Have you actually compared the reception range to that of the stock antenna? What's the distance difference in miles?
2) Lower weight: CHECK! Oh yeah, right, because the stock antenna weighs SO much! Lose it and I can gain .0001 HP and be so much more aerodynamic.
3) Virtually invisible mod: CHECK! With the exception of a natural looking "black rubber vacuum hose cap" stuffed into the rear 1/4.
4) Less electrical load on the car: CHECK! Oh sure, because the stock antenna draws SO much power...my alternator will live forever!!
5) More reliable: CHECK! Maybe...if your that worried your antenna might fail once every 10 years or so.
6) Less expensive than replacement: CHECK! Who said the OP's antenna needed to be replaced?? Sounds like a lot MORE work than simple diagnosis and repair.

Now we both know where each of us stands. I repair what's failing and you rip stuff out and modify. To each his own.

The OP didn't ask for advice on gutting stock components and replacing with aftermarket parts. He asked for direction in diagnosing his problem. That's what I did.
Where you stand is replacing an OEM part of bad design with aftermarket stuff (which is likely garbage... GM power antennas are bad, aftermarket service parts for them are EVEN WORSE) that LOOKS like it's OEM.

I gave him an $8 solution.

Now... He can take the time to diagnose this... Check relays... Chase wiring... And maybe he'll find out the relay is bad... And if he does, you know what?

That power antenna is GOING TO fail. Likely sooner rather than later, and he'll be right back in the same spot.

OR...

He can do what I suggested and never worry about it ever again.

For $8.

Last edited by PacerX; Apr 18, 2021 at 09:53 AM.
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Old Apr 18, 2021 | 12:22 PM
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Originally Posted by PacerX
Where you stand is replacing an OEM part of bad design with aftermarket stuff (which is likely garbage... GM power antennas are bad, aftermarket service parts for them are EVEN WORSE) that LOOKS like it's OEM.

I gave him an $8 solution.

Now... He can take the time to diagnose this... Check relays... Chase wiring... And maybe he'll find out the relay is bad... And if he does, you know what?

That power antenna is GOING TO fail. Likely sooner rather than later, and he'll be right back in the same spot.

OR...

He can do what I suggested and never worry about it ever again.

For $8.
All the stuff you change might fail after 30 years too
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Old Apr 18, 2021 | 02:25 PM
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Thank you everyone I would like to keep the antenna in the car. The bumper is off so I can take it out and do any repairs to it but I will try the relay first. I would rather not add a bunch of aftermarket crap that I don’t have enough evidence is going to just brake and have to be replaced or tear up the car. I just have never heard anything about the power antenna messing with the car.
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Old Apr 18, 2021 | 03:01 PM
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Originally Posted by DM89
Thank you everyone I would like to keep the antenna in the car. The bumper is off so I can take it out and do any repairs to it but I will try the relay first. I would rather not add a bunch of aftermarket crap that I don’t have enough evidence is going to just brake and have to be replaced or tear up the car. I just have never heard anything about the power antenna messing with the car.
Why don't you try to see if the antenna is getting signal to extend before replacing the relays? It should get a 12V signal when it is activated by the radio.
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Old Apr 19, 2021 | 08:51 AM
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Originally Posted by DM89
Thank you everyone I would like to keep the antenna in the car. The bumper is off so I can take it out and do any repairs to it but I will try the relay first. I would rather not add a bunch of aftermarket crap that I don’t have enough evidence is going to just brake and have to be replaced or tear up the car. I just have never heard anything about the power antenna messing with the car.
If you do take the antenna out, you can easily bench test it by hooking up power in the following manner:

To Raise
Green +
Grey -

To Lower
White +
Green -

You do not have to remove power as soon as the antenna raises or lowers as the switches inside the antenna will cut power when the mast reaches the end of travel on either end.
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Old Apr 19, 2021 | 10:39 AM
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Originally Posted by aklim
Going through the carwash, you don't have that "OH! ****!!!" moment when you realize the brush hits the antenna. And every so often, you don't have to lube the shaft and rub it up and down.......
I hate it when you have to lube the shaft and rub it up and down.
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Old Apr 19, 2021 | 11:20 AM
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Originally Posted by Phobos84
I hate it when you have to lube the shaft and rub it up and down.
Worse is if the shaft stays put and not rises to the occasional.
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Old Apr 19, 2021 | 11:26 AM
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Originally Posted by aklim
Worse is if the shaft stays put and not rises to the occasional.
Use the blue grease when that happens

Last edited by walleyfisher; Apr 19, 2021 at 11:26 AM.
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