Passenger side rear compartment window - antenna in glass?

Your windshield and rear window has defrost outlets that exhaust right onto your front and rear window glass. Your side glass probably doesn't enjoy this luxury.

Sounds like the dealer may be correct to me, but make them guarantee the job.

the antenna is on the rear glass behind the right side molding at the rear glass is the connections for the rear defrost and ant check the wire connections

Between the rear passenger window and the back window is a junction where rear defrost wiring and radio antenna connect. Rear defrost wiring becomes loose and burns this unit out. when looking for replacement at salvage yard everyone of them I found had burned up. Lots of La Sabres w/o working rear defrost. I made solid connections for defroster, and added an antennae, not much point in repeating a system that will fail again.

The antenna is part of the back glass. The antenna wires to pick the reception up are the same ones that defrost your rear window in the glass. You can check the connections behind the back "C" pillar posts. If the grids are broken this will reduce your reception.

The antenna is a fiber element that resembles the defroster in the rear of the car on the top of the glass, a zigzag pattern usually. there is no serviceable part to this. the wire runs from the front of the car dash, to the rear window

you need to make sure the wires are on the glass on each side and there is no broken wires in the glass there is a repair kit at a auto store to fix if you have a volt meter test it and that way you can find the problem look for breaks in the wire in the glass and do not for get the wires on each side of the glass.

This may be just a case of inadvertently hitting the window lock out n th driver door window switch by mistake. Check that first. Here's some background on window operation

Principles of Operation
The driver power window regulator motor is controlled directly by the master window/door lock/unlock switch (and its integrated "auto down" module). Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The driver power window regulator motor is a reversible motor that is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The passenger power window regulator motor is controlled directly by the passenger power window switch and can also be controlled by the master window/door lock/unlock switch. Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The passenger power window regulator motor is a reversible motor, which is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The power rear quarter glass is also directly controlled by the master window/door lock/unlock switch. The power rear quarter glass power latches also utilize reversible motors. The power rear quarter glass power latches are operated by applying power and ground to the motor leads to open the window, and then reversing polarity on those same leads to close the window.
Symptom Chart Condition Possible Sources Action

• All windows are inoperative

• BJB Fuse:
  • F20.
• Circuit.
• Power window relay.
• Front door power window switch.

• GO to Pinpoint Test A .

• Single power window is inoperative

• Front door power window switch.
• Front door power window regulator.
• Circuit.
• Driver door power window switch.

• GO to Pinpoint Test B .

• Vent power window is inoperative — quarter window glass power latch

• Circuit.
• Quarter window glass switch.
• Quarter window glass power latch.

• GO to Pinpoint Test C .

• The one touch down feature is inoperative

• Master window regulator and door lock switch.

• INSTALL a new master window/door lock/unlock switch. REFER to Switch—Master Window Door Lock/Unlock .

• The back window will not defrost

• CJB Fuses:
  • F30 (10A).
  • F32 (20A).
  • F34 (20A).
• BJB Fuse:
  • F27 (45A)
• Circuit.
• Heated back window switch.
• SEC/timer module.
• Rear window defrost relay.

• GO to Pinpoint Test D .

• The back window defrost will not shut off automatically

• SEC/timer module.
• Circuit.
• Rear window defrost relay.

• GO to Pinpoint Test E .

The top part is the antenna. If the whole thing doesn't work ck this out.

My defroster quit too. I found a wire burned in the connector that is found under the fuse box that is located inside the car on the passenger side kick panel.
You have to remove the entire kick panel to access the large white connector not just the fuse door. The panel just unsnaps as you lift up and out. Start from the panel seam beside the passenger seat and lift up and back. You'll also have to unsnap the carpet there too.
You'll see the white connector that has a lot of wires on it. If you'll unsnap the connector you'll see the burned wire. It will be thicker than the others and purple. Just cut the purple wire on both sides of the connector and splice them together with a piece of wire the same gauge and it will work fine.

First place to check is under the wide trim piece that runs over the back drivers side door and also runs to the back window. You can pull this away from the body. It just snaps in place and the seatbelt goes through it. Pull it down toward you and you should see a black box fastened to the side of the window pillar. It should have three wire connections. One is the radio antenna, one goes to the window and one comes from the wire harness. Check the two wire connections from the harness and to the window. See if they are loose or in my case the one from the harness was burnt and had melted the black box where the wire went in. I had to replace the the wire connector and the black box ($72.00) and replaced the connector terminals. The replacement connector is available but that little thing is pricey ($32.00). They must be proud of that thing.
Hope this helped.