Radio Speaker - Whine With Cruise Control Engaged
88chevy12Number: 87-289-9B
Section: 9B
Date: APRIL, 1988
Subject: CRUISE CONTROL NOISE IN RADIO
Model and Year: 1986-87 NOVA CRUISE CONTROL AND RADIO
TO: ALL CHEVROLET DEALERS
Some vehicles equipped with cruise control and a radio may exhibit a whine or buzzing noise from the radio speakers when the cruise control is operating.
This noise is caused by electrical interference generated by the electrically driven cruise control vacuum pump mounted to the right hand side inner fender panel, underhood.
The repair for this condition is to install a noise suppression choke coil, P/N 94846080, available from GMSPO.
The suppression coil should be inserted, in series, at the electrical harness connector which is part of the vacuum pump motor assembly.
Labor Operation Number: R0710
Labor Time: .2 Hours