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Chevrolet Silverado / GMC Sierra. Manual - part 2222
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The DTC will set when the radio detects a short to voltage, short to ground, or an open/high
resistance in the video display mode control circuit 400 ms after the radio activates the remote
enable circuit.
Action Taken When the DTC Sets
The radio sets the DTC and defaults the video display to normal mode.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists.
A history DTC will clear once 100 consecutive malfunction-free ignition cycles have
occurred.
Reference Information
Schematic Reference
Video System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Video Entertainment System Description and Operation
Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
Scan Tool Reference
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Control Module References for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the rear video display.
2. Ignition ON, test for 100-300 Hz at the control circuit terminal 10.
If not within the specified range, test the control circuit for a short to voltage, short to
ground, or an open/high resistance. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the rear video display.
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
DTC B1289
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 B1289 01
Video Display Brightness Control Signal Short to Battery
DTC B1289 02
Video Display Brightness Control Signal Short to Ground
DTC B1289 04
Video Display Brightness Control Signal Open Circuit
Diagnostic Fault Information
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Circuit/System Description
The radio can control the video display brightness on vehicles equipped with rear seat
entertainment (RSE) video. The radio varies a pulse with modulated (PWM) signal to the rear
entertainment video screen to command the screen brightness to the desired level.
Conditions for Running the DTC
Ignition ON.
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The DTC will set when the radio detects a short to voltage, short to ground, or an open/high
resistance in the video display brightness control circuit 400 ms after the radio activates the
remote enable circuit.
Action Taken When the DTC Sets
The radio sets the DTC and defaults the video display to full brightness.
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists.
A history DTC will clear once 100 consecutive malfunction-free ignition cycles have
occurred.
Reference Information
Circuit
Short to
Ground
Open/High
Resistance
Short to
Voltage
Signal
Performance
DVD Display B+
1
1
1
-
Radio ON Signal
1
1
1
-
Video Display Brightness
Control
B1289 02
B1289 04
B1289 01
-
Video Display Mode Control
B1288 02
B1288 04
B1288 01
-
Video High Signal
1
1
1
-
Video Low Signal
1
1
1
-
DVD Display Ground
-
1
-
-
1. Video Entertainment System Inoperative.
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
Schematic Reference
Video System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Video Entertainment System Description and Operation
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
1. Ignition OFF, disconnect the harness connector at the rear video display.
2. Ignition ON, test for 100-300 Hz at the control circuit terminal 9.
If not within the specified range, test the control circuit for a short to voltage, short to
ground, or an open/high resistance. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the rear video display.
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
DTC B2455
Diagnostic Instructions
2008 Chevrolet Silverado 1500
2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis
Silverado, Sierra & Silverado
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