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Begin by removing the decorative radio retaining cover. Remove the retaining bolts. The radio will slide out. Remove the wiring harness and the antenna cable from the back of the radio.
I think there are only a couple screws that hold it on a couple mounting brackets inside the trunk. You'll have to spin off the nut on the outside of the car that holds the antenna on there, too. The antena has a big wire that goes to the radio and another wiring harness that operates the power mast.
Remove the old antenna. Attach the universal antenna to the radio and replace the radio after finishing the task. Install the new antenna. Test to ensure the wiring works.
To replace a broken radio antenna on a 2004 GMC Envoy you need to unscrew the old antenna. Next, place the new antenna in the hole and screw into place.
You can replace an XM radio antenna with a CB antenna, a ham 40-meter mobile antenna, a cellphone antenna, a GPS antenna, a TV antenna, a wire coat hanger, a 6 GHz microwave antenna, or a chain of paperclips. However, since none of them is optimized to operate at the frequencies of XM radio, like the XM antenna is, none of the others will work as well. Most of them will likely be so inefficient at the satellite radio frequencies that when you use one of those, you hear nothing at all on your radio.
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You will have to replace that piece of the antenna cable.
First physical pull the antenna all the way up, clean the antenna very good with a degreaser, then lubricate it with a silicon spray. Open the trunk, unplug the power to the antenna, start your car with the radio turned on, stop the engine, plug the power source to antenna back in. Try it now, if you still have the same problem, either the relay is stuck and needs replacing or the antenna motor is shorted and needs to be replaced.
Try turning the radio off before turning the car off. If this doesn't work, check the assembly at the base of the antenna for a sensor switch for gunk and clean it off. Don't ask me where it is, because I don't have the schematics for the antenna assembly on a 1992 Cutlass Ciera handy at this moment. If this doesn't work, the easiest "fix" is to wait until the antenna goes all the way up, then clip the power lead to the antenna motor. Just make sure you don't clip the antenna lead. This will keep the antenna up all the time. Next cheapest route is to replace the whole antenna assembly, motor and all. I would recommend getting a cheap $5 standard antenna from a local auto parts store and do away with the "convenience" of the automatic retractable antenna.
you just have to get out the 2 black bolt at the bottom of the radio "rack"... there is only 2 black bolt to remove... at the bottom... thx
turn off the radio, press "set" then adjust with the scan and seek buttons
Pull off the wood grain trim bezzel then there are 4 7mm screws. Slide radio out and disconnect 3 wire plugs.