Hi beengood, tell me a bit more about the noise
-you only hear in when turning the key off?
-is it coming through speakers?
Check fuses stereo probably has 2 fuses
Let me know
Dan
CarSmart Auto Service
It starts as a high pitch and stero goes off. Then when truck is turned off noise gets really loud and keeps going after key is removed a out 30 seconds or moor. The noise is coming out all the speakers
It may be an internal radio failure, the only way to be certain is to be sure radio has proper powers and grounds
Dan
What are the best GMC repair shops?
RepairPal Certified shops can diagnose and repair your 2002 GMC Savana 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
It starts as a high pitch and stero goes off. Then when truck is turned off noise gets really loud and keeps going after key is removed a out 30 seconds or moor. The noise is coming out all the speakers
It may be an internal radio failure, the only way to be certain is to be sure radio has proper powers and grounds Dan