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If a connection is not made within specified time, go to Component Testing. 5. Hear all messages during the course of the tests available, and contact the General Motors Technical Assistance Center. Component Testing 1. Verify that there is no exterior damage to the cellular antenna. If damaged, test or replace the cellular antenna assembly. 2. Disconnect the cellular antenna coax from the VCIM. 3. Disconnect the cellular antenna coax from the cellular antenna. 4. Test for infinite resistance between the center conductor of the coax and the outer metal shield. If different than specified value, replace the cellular antenna coax. 5. Test for less than 1 ohm resistance at the cellular antenna coax center conductor from end to end. If greater than specified value, replace the cellular antenna coax cable. 6. Contact the General Motors Technical Assistance Center. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Mobile Telephone Digital Antenna Replacement VIDEO DISPLAY IS POOR OR BLANK 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. Reference Information Schematic Reference IMPORTANT: Vehicle may be equipped with sectioned coax. Test each section and replace only the faulty section, not the entire length or coax.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Radio/Navigation System Schematics Connector End View Reference Component Connector End Views Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Testing With Third Row Video Screen 1. Flip open the rear video displays. With the ignition ON, operate the rear entertainment system using several known good DVD disks. Observe the rear video screens. If both screens turn on but are blank, replace the radio. 2. Note witch screen is malfunctioning. Remove both rear video displays. Swap the positions of the rear video screens and plug in the harness connectors. Operate the rear entertainment If the malfunctioning screen is not working in a different location, replace the suspect If the malfunctioning screen operates normally in a different location, Test or repair 3. Test and repair open, short to ground and short to power on the ground and battery positive voltage circuits at both rear video displays. If the video display power and ground circuits test normal, replace the suspected rear IMPORTANT: If rear video display does not turn ON, use diagnostic Video Entertainment System Inoperative.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Without Third Row Video Screen 1. Flip open the rear video display. With the ignition ON, operate the rear entertainment system using several known good DVD disks. Observe the rear video screen. If the screen turns on but is blank. Test for an open, short to ground and short to power If the video screen is still malfunctioning, replace the radio. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Video Display Replacement (Second Row) Control Module References for radio replacement, setup, and programming VIDEO ENTERTAINMENT SYSTEM INOPERATIVE 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. Reference Information Schematic Reference Radio/Navigation System Schematics Connector End View Reference Component Connector End Views Electrical Information Reference Circuit Testing IMPORTANT: If rear video display does not turn ON, use diagnostic Video Entertainment System Inoperative.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Testing 1. Disconnect the second row video (and third row if equipped) display harness connector. With the ignition ON, operate the rear entertainment system. Verify there is voltage on the If voltage is not present on the remote enable signal circuit, test and repair open or If the enable signal circuit tests normal but there is no voltage, replace the radio. 2. Test and repair open, short to ground and short to power on the ground and battery positive voltage circuits at the second row video (and third row if equipped) display. If the video display power and ground circuits test normal, replace the suspected rear Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Video Display Replacement (Second Row) VIDEO ENTERTAINMENT SYSTEM REMOTE CONTROL INOPERATIVE 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. Reference Information IMPORTANT: If rear video display turns ON but the video is blank, use diagnostic Video Display is Poor or Blank.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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