1969 - 1970 Corvette: Chevrolet Engineering Service Letter: Radio Service Update

Subject:   1969 and Future Corvette Suppression Material - U69
Model and Year:  1969 - 1970 Corvette
Date:   NA
Source:   Chevrolet Engineering Service Letter - 70-1-23

It is possible in weak signal areas that noise in the radio will be apparent enough to cause owner complaints.  This condition should not be prevalent in a strong signal area except to a most critical listener.  Should these complaints occur, the following is recommended:

1. Remove and discard ammeter capacitor #3934217.  The capacitor actually adds alternator noise into the radio.
2. Re-route the ammeter lead wires into an existing harness retaining clip in such a manner that these ammeter wires DO NOT drape down on top of the radio case.  The proximity of the ammeter leads induces the same noise electrically into the radio case.

Article ID: 910
Created: September 21, 2014
Last Updated: September 21, 2014
Author: Rob Loszewski

Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article.php?id=910