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Ask Don 'Mo Lurch' Your Own Que...
Don 'Mo Lurch'
Don 'Mo Lurch', Cadillac Technician
Category: Cadillac
Satisfied Customers: 20956
Experience:  GM, Cadillac Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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Radio comes on, but sometimes no sound. Have changed the

Customer Question

Radio comes on, but sometimes no sound. Have changed the amplifier but still happening.
JA: Is this an aftermarket stereo, or did it come with the car?
Customer: Factory installed
JA: What is the model/year of your Cadillac?
Customer: 2007 CADILLAC STS
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Went to Cadillac dealer, they said it was amplifier, replaced amplifier, worked for a day, then started happening again. They recalibrated something and seemed okay for a week. Now sometimes I have sound and sometimes not.
JA: Anything else you think the mechanic should know?
Customer: Can't think of anything, it doesn't seem to have any reason. Drive somewhere with music, get out, come back and no music
Submitted: 1 year ago.
Category: Cadillac
Expert:  Don 'Mo Lurch' replied 1 year ago.

sorry for the delay............
Greetings...... “Hi, I’m Don (akaCustomer and I look forward to helping you!”
IF you have changed the Factory AMP, then the issue can be the Radio, BCM or the Communication Module.
The BCM powers on the AMP & the Radio
The Communication Module enables the Radio, AMP & BCM to communicate with each other.
There is NO Customer Input for testing, other than checking connections & voltage
Use of GM Dealer Scan Tool is needed to Update, Test & Program

apprx 1 hour labor
Could be as simple as a Software Update

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Expert:  Don 'Mo Lurch' replied 1 year ago.