LeSabre V6-181 3.0L (1986)
Grounding Point: Customer Interest
Radio - Ignition Noise Interference
Bulletin
86-9-13
Date
Nov. '86
Ref. No. 86-156-9
SUBJECT:
IGNITION NOISE IN RADIO
MODELS AFFECTED:
1986 LESABRE AND ELECTRA
NON-DELCO BOSE STEREO RADIO
A condition may exist on the 1986 LeSabre and Electra models equipped with stereo radio of ignition type electrical noise interference. The interference
is engine speed related and disappears when engine is off. The interference may be due to the radio speaker wire routing in the instrument panel on the
Electra, and ground wiring on the LeSabre.
The LeSabre electrical interference condition may be corrected by establishing a new ground point for the radio at the lower right side of the instrument
panel. To correct the LeSabre, follow the procedure outlined for LeSabre with Delco Bose Radio in Service Bulletin No. 86-9-9.
To correct the Electra ignition noise interference, perform the following:
1.
Disconnect battery negative cable.
2.
Remove instrument panel trim plate for access to radio, right lower instrument panel close out, and glove box.
3.
Remove radio mounting screws and radio.
4.
Depin terminals in connector C3 (blue color connector) for rear speakers.
5.
On six speaker systems (Option UW6, Concert Sound Speaker System), de-pin terminals in connector C2 (White color connector) for front
speakers.
6.
Tape removed wires back to wiring harness to prevent rattles.
7.
Fabricate 30 inch long leads (4 to 8, depending on whether connector C2 wires required removal). Install terminals 12040500 on one end of each
wire, and terminal 12034047 on the other end using .8 wire. Terminals and connectors required for this modification may be obtained from a
GMWDD Kit, Part Number 12070473.
