Chevrolet Silverado / GMC Sierra. Service manual — part 2657

Fig. 3: Passenger (AN3/DL3)
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 4: Position Controls (DL8/DPN -AN3/DL3)
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 5: Heat (DL8/DPN -AN3/DL3)
Courtesy of GENERAL MOTORS CORP.

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

DTC

Description

DTC B1544, B1600, or
B1605

B1544 01: Mirror Motors Common Circuit Short to Battery

B1544 02: Mirror Motors Common Circuit Short to Ground

B1544 04: Mirror Motors Common Circuit Open

B1600 01: Mirror Motor Vertical Circuit Short to Battery

B1600 02: Mirror Motor Vertical Circuit Short to Ground

B1600 04: Mirror Motor Vertical Circuit Open

B1605 01: Mirror Motor Horizontal Circuit Short to Battery

B1605 02: Mirror Motor Horizontal Circuit Short to Ground

B1605 04: Mirror Motor Horizontal Circuit Open

DTC B1580 or B1590

B1580: Mirror Horizontal Position Sensor Circuit

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

DIAGNOSTIC STARTING POINT - MIRRORS

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic
System Check 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 will identify the correct procedure for diagnosing the
system and where the procedure is located.

DTC B1544, B1600, OR B1605

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 B1544 01

Mirror Motors Common Circuit Short to Battery

DTC B1544 02

Mirror Motors Common Circuit Short to Ground

DTC B1544 04

Mirror Motors Common Circuit Open

B1590: Mirror Vertical Position Sensor Circuit

DTC B1640

B1640 01: Mirror Heater Circuit Short to Battery

B1640 02: Mirror Heater Circuit Short to Ground

DTC B1722

B1722 01: Mirror Power Fold Circuit Short to Battery

B1722 02: Mirror Power Fold Circuit Short to Ground

B1722 04: Mirror Power Fold Circuit Open

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Mirrors - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado