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signal terminal 11 while pressing the black phone button. If not within the specified range, replace the inside rearview mirror. 4. Test for 2.7k-3.3k ohms between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the blue On-Star® button. If not within the specified range, replace the inside rearview mirror. 5. Test for 11.7k-14.3k ohms between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the red emergency button. If not within the specified range, replace the inside rearview mirror. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Inside Rearview Mirror Replacement Control Module References for CIM replacement, setup, and programming DTC B2483 OR B2484 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B2483 00 Global Positioning System (GPS) Antenna Malfunction Short to Ground DTC B2484 00 Global Positioning System (GPS) Antenna Malfunction Open Circuit Circuit/System Description The communication interface module (CIM) receives information from a specific navigation
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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