The antenna GM part# 25845987
The receiver GM part# 25808837

Real easy to change.Hope this helps..



1. Replace the RCDLR module and the RCDLR antenna using the following procedure:

Impala / Monte Carlo

1.1. Remove the driver's side "A" pillar molding and I/P closeout panel.
1.2. Unplug the speaker.
1.3. To expose the RCDLR antenna, partially remove the driver's side upper I/P closeout
panel (near windshield).
1.4. Remove the clips holding the RCDLR antenna wire at the RCDLR module and along the
"A" pillar.
1.5. Cut the old RCDLR antenna wire a minimum of 152 mm (6 in) from the button
(connecting to the windshield), leaving that portion of the old RCDLR antenna
connected to the windshield.
1.6. Remove the I/P carrier bolt and remove the old RCDLR antenna.
1.7. Remove the RCDLR module.
1.8. Install the new RCDLR module.
1.9. Lay in the new RCDLR antenna and reinstall the carrier bolt.
1.10. Connect the new antenna to the RCDLR antenna module.
1.11. Clip the new RCDLR antenna into place using the existing holes on the "A" pillar.
1.12. Reinstall the I/P close-out panel.
1.13. Reconnect the speaker wire.
Important: Be sure that the end of the old RCDLR antenna is tucked behind the "A"
pillar molding. The button on the windshield is no longer functional, however leaving
the cover on the button will provide a cleaner look to the vehicle.
1.14. Reinstall the "A" pillar molding and I/P side closeout panel.