Chevrolet Silverado / GMC Sierra. Service manual — part 1688

Fig. 2: Charging (Gas)
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 3: Charging (Diesel)
Courtesy of GENERAL MOTORS CORP.

AUXILIARY BATTERY SCHEMATICS

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 4: Auxiliary Battery Schematic
Courtesy of GENERAL MOTORS CORP.

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

DTC

Description

DTC B1325

B1325 03: Device Power Circuit Voltage Below Threshold
B1325 07: Device Power Circuit Voltage Above Threshold

B1325 4A: Device Power Circuit Checksum Error - IPC

DTC B1424

B1424 00: Device Voltage Low - Theft Deterrent Module

DTC B1516

B1516 08: Battery Current Sensor Performance Signal Invalid

B1516 66: Battery Current Sensor Performance Wrong

Mounting Position

DTC B1517

B1517 03: Battery Voltage Below Threshold - BCM
B1517 07: Battery Voltage Above Threshold - BCM

B1517 5A: Battery Voltage Plausibility Failure - BCM

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

DIAGNOSTIC STARTING POINT - ENGINE ELECTRICAL

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

The identification of the control modules which command the system

The ability of the control modules to communicate through the serial data circuit

The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Diagnostic System Check - Vehicle will identify the correct procedure for
diagnosing the system and where the procedure is located.

DTC B1325

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 B1325 03

Device Power Circuit Voltage Below Threshold

DTC B1325 07

Device Power Circuit Voltage Above Threshold

DTC B1527

B1527 00: High Parasitic Load

DTC C0899

C0899 00: Device Voltage Low - EBCM (JF3/JF7/JH6/JH7)

C0899 03: Device Voltage Low - EBCM (JL4), PTO (M1F)

DTC C0900

C0900 00: Device Voltage High - EBCM

DTC P0562

P0562: System Voltage Low

DTC P0563

P0563: System Voltage High

DTC P0615

P0615: Starter Relay Control Circuit

DTC P0621

P0621: Generator L-Terminal Circuit

DTC P0622

P0622: Generator F-Terminal Circuit

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Electrical - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

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Политика конфиденциальности