Volvo Radio Interference
S80 models chassis numbers 000580 - 049199 with Gearbox GM T65 EV / GT
If there is a radio interference on the AM wave band around 900 kHz then a diode must be cut from the underside of the solenoid in the gear selector assembly. The car must be taken to a Volvo dealership for the work to be done.
The interference occurs during acceleration at approximately 13km/h (8mph) and during deceleration at 10km/h (6mph) as the shift lock system activates and deactivates.