Chevrolet Silverado / GMC Sierra. Service manual — part 2217

Fig. 10: Communication Signals and Controls
Courtesy of GENERAL MOTORS CORP.

VIDEO SYSTEM SCHEMATICS

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 11: Display Power, Ground and Video Signals
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

Fig. 12: Audio Signals
Courtesy of GENERAL MOTORS CORP.

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

DTC

Description

DTC B0000

B0000 5A: Vehicle Speed Information Circuit Plausibility

Failure

DTC B1024

B1024 11: Circuit Board Temperature Sensor Above Maximum

Threshold

DTC B1025, B1035,
B1045, or B1055

B1025 01: Audio Output 1 Left Front Circuit Short to Battery

B1025 02: Audio Output 1 Left Front Circuit Short to Ground

B1025 04: Audio Output 1 Left Front Circuit Open

B1035 01: Audio Output 2 Right Front Circuit Short to Battery

B1035 02: Audio Output 2 Right Front Circuit Short to Ground

B1035 04: Audio Output 2 Right Front Circuit Open

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado

DIAGNOSTIC STARTING POINT - CELLULAR, ENTERTAINMENT, AND NAVIGATION

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic
System Check - Vehicle will provide the following information:

B1045 01: Audio Output 3 Left Rear Circuit Short to Battery

B1045 02: Audio Output 3 Left Rear Circuit Short to Ground

B1045 04: Audio Output 3 Left Rear Circuit Open

B1055 01: Audio Output 4 Right Rear Circuit Short to Battery

B1055 02: Audio Output 4 Right Rear Circuit Short to Ground

B1055 04: Audio Output 4 Right Rear Circuit Open

DTC B1259

B1259 02: Antenna Ground Circuit Short to Ground

B1259 05: Antenna Ground Circuit Short to Battery or Open

DTC B1287

B1287 01: Amplifier Control Signal Circuit Short to Battery

B1287 02: Amplifier Control Signal Circuit Short to Ground

B1287 04: Amplifier Control Signal Circuit Open

DTC B1288

B1288 01: Video Display Mode Control Signal Short to

Battery

B1288 02: Video Display Mode Control Signal Short to

Ground

B1288 04: Video Display Mode Control Signal Open Circuit

DTC B1289

B1289 01: Video Display Brightness Control Signal Short to

Battery

B1289 02: Video Display Brightness Control Signal Short to

Ground

B1289 04: Video Display Brightness Control Signal Open

Circuit

DTC B2455

B2455 04: Cellular Phone Microphone Circuit Malfunction

Open Circuit

DTC B2462

B2462: Global Positioning System (GPS) Signal Error

DTC B2470

B2470 00: Cellular Phone Antenna Circuit Malfunction

DTC B2474

B2474 07: Navigation Display Head Backlighting Performance

DTC B2476 or B2482

B2476 00: Cellular Phone Select Service Switch
B2482 00: Cellular Phone Select Service Switch

Range/Performance

DTC B2483 or B2484

B2483 00: Global Positioning System (GPS) Antenna

Malfunction Short to Ground

B2484 00: Global Positioning System (GPS) Antenna

Malfunction Open Circuit

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis

Silverado, Sierra & Silverado