GM Bonneville/Eighty Eight/LeSabre 1986-1999

Power Antenna

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The power antenna is designed to raise automatically when the radio is turned ON , with the ignition switch in RUN or ACCY . If the radio or ignition switch is turned to the OFF position, the antenna will automatically retract to its down position. The antenna is connected to the radio by a coaxial cable.

When the ignition switch and radio is turned ON , power is supplied to the antenna relay. The relay contacts closes and the antenna motor runs. After the antenna is at its full height, the UP switch opens and the motor stops.

When the ignition switch or radio is turned OFF , the circuit through the relay is opened and the antenna automatically retracts to its DOWN position.

Always switch the radio

OFF when entering a car wash. If the radio is not switched OFF , the antenna mast can be damaged when the ignition switch is turned to the ON position.

REMOVAL & INSTALLATION



Because of the varied applications of power antennas, the following general power antenna removal and installation procedures are outlined. These removal steps can be altered as necessary.

Front Mounted Type

See Figure 1

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the instrument panel sound absorber pad.
  4.  
  5. Disconnect the antenna lead-in and harness connector from the relay assembly.
  6.  
  7. Apply masking tape to the edge of the fender and door.
  8.  
  9. If required, remove the inner to outer fender retaining screws.
  10.  
  11. If required, raise the vehicle and support it safely; then remove the necessary front wheel and tire assembly.
  12.  
  13. Remove the lower rocker panel retaining screws, lower fender to body retaining bolt and remove the lower rocker panel, as required.
  14.  
  15. Remove the inner splash shield from the fender, as required.
  16.  
  17. Remove the upper antenna retaining nut, using an appropriate tool.
  18.  
  19. Remove the antenna-to-bracket retaining bolts, then remove the antenna assembly from the vehicle.
  20.  



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Fig. Fig. 1: Exploded view of the front mounted power antenna assembly - early model Oldsmobile shown

To install:
  1. Fit the antenna into position, then loosely install the antenna gasket and upper nut.
  2.  
  3. Loosely install the antenna-to-bracket retaining bolts.
  4.  
  5. Tighten the upper antenna retaining nut, using the appropriate tool, then tighten the antenna to bracket retaining bolts.
  6.  
  7. Complete installation in the reverse order of the removal procedure.
  8.  
  9. Apply silicone grease to the harness connector before reconnecting.
  10.  
  11. Check the operation of the antenna mast. Reset the clock, if required.
  12.  

Rear Mounted Type

See Figures 2 through 13

  1. Disconnect the negative battery cable. Open the trunk
  2.  
  3. From inside the trunk, remove the trim panel from either the right or left rear wheel area.
  4.  



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Fig. Fig. 2: To remove the trunk trim panels, there are a few different types of retainers. Unscrew this wingnut type



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Fig. Fig. 3: Use a trim panel removal tool to unfasten this type of retainer



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Fig. Fig. 4: Make sure to note where each retainer goes, as they are not marked

  1. Depending upon on which side the antenna is mounted, it may be necessary to remove the jack and jack case from the side of the trunk.
  2.  



Click image to see an enlarged view

Fig. Fig. 5: If necessary, open the jack storage case, remove the jack and the case retainers, then remove the case

  1. Remove the antenna mounting bracket retaining screws.
  2.  
  3. Remove the upper antenna nut and bezel from the antenna, using an appropriate tool.
  4.  



Click image to see an enlarged view

Fig. Fig. 6: There is a special tool available for loosening the upper antenna nut and bezel ...



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Fig. Fig. 7: ... however, a pair of needlenose pliers also gets the job done



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Fig. Fig. 8: Remove the nut from the upper mount

  1. Remove the lead-in cable and wiring connector. If equipped, disconnect the drain hose.
  2.  



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Fig. Fig. 9: Disconnect the radio-to-antenna lead-in cable ...



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Fig. Fig. 10: ... and unplug the antenna electrical connector



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Fig. Fig. 11: On some vehicles, there is a drain hose which must be disconnected

  1. Unfasten the mounting bolts, then remove the antenna assembly from the vehicle.
  2.  



Click image to see an enlarged view

Fig. Fig. 12: Remove the power antenna mounting bolts (see arrows) ...



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Fig. Fig. 13: ... then remove the antenna assembly from the vehicle

To install:
  1. Position the antenna in the vehicle, then connect the lead-in cable.
  2.  
  3. Install the nut and bezel to the antenna and mounting bracket retaining screws.
  4.  
  5. Apply silicone grease to the harness connector, then attach it.
  6.  
  7. If removed, install the jack case and jack.
  8.  
  9. Connect the negative battery cable, turn the ignition ON , then check for proper operation of the antenna.
  10.  
  11. Install the trim panel, making sure to install the retainers in the proper positions.
  12.  
  13. Reset the clock and other memory components as required.
  14.  

 
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