The multi-band antenna is on the roof of the vehicle. The antenna is used for AM-FM radio, OnStar, the SiriusXM satellite radio service system, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
If the vehicle has a sunroof, and it is open, reception can also be affected.
Radio Reception
Audio Players#03-06-03-004J: Warranty Code Generated By EL-50313 Midtronics GR8 Battery Tester/Charger Required for Claim Processing On Labor Operation 4041510 and...
Subject:Warranty Code Generated By EL-50313 Midtronics GR8 Battery Tester/Charger Requiredfor Claim Processing On Labor Operation 4041510 and 250 Mile/400 Km Labor OperationRestriction (North America ONLY)Models: 2014 and Prior GM Cars and Light Duty TrucksAttention: This bulletin applies ONLY to ...