Outline

91cadillac01

Bulletin No. T-91-17
File in Group 9
Number 74
Corp. Ref. No. 019602
Date Jan. 1991


SUBJECT: RADIO NOISE


MODELS AFFECTED: 1985-1991 DE VILLES, FLEETWOODS, ELDORADOS, SEVILLES 1985-1989 BROUGHAMS


This bulletin outlines diagnosis and repair procedures for various radio noises experienced on 1985-1991 DeVilles, Fleetwoods, Eldorados, and Sevilles and 1985-1989 Broughams.


Radio noises can often be categorized by describing the sound heard or the circumstances under which they occur. The trouble trees in this bulletin are broken down by types of noises or where they occur. Noises that do not clearly fall into a noise category should be diagnosed using the "Noise Diagnosis" trouble tree, chart 1. The "Noise Diagnosis" trouble tree is designed to lead to the other trouble trees, if appropriate, or lead directly to the repair.


To begin diagnosis refer to the appropriate trouble tree chart below:

Noise Diagnosis........................ Chart 1

Switch Pops............................. Chart 2

Whines.................................... Chart 3

Ignition Noise.......................... Chart 4

Poor Reception/Static................ Chart 5

Non-Bose Speakers Noisy.......... Chart 6

Bose Speakers Noisy................. Chart 7

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