Chevrolet Silverado / GMC Sierra. Service manual — part 2690

Fig. 6: 8-Way Power (AN3)
Courtesy of GENERAL MOTORS CORP.

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

DTC

Description

DTC B1335

B1335 00: Device Power 3 Circuit

B1335 0B: Device Power 3 Circuit Current Above Threshold

B1335 42: Device Power 3 Circuit Calibration Data Set Not

Programed

B1335 4B: Device Power 3 Circuit Calibration Not Learned

DTC B1395

B1395 02: Device Voltage Reference Output Circuit Shorted

to Ground

B1395 05: Device Voltage Reference Output Circuit Shorted

to Battery or Open

DTC B1735, B1740,

B1735 01: Driver Seat Front Up Switch Circuit Short to

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Power Seats - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

B1745, B1750, B1755,
B1760, B1815, or B1820

Battery

B1740 01: Driver Seat Front Down Switch Circuit Short to

Battery

B1745 01: Driver Seat Rear Up Switch Circuit Short to

Battery

B1750 01: Driver Seat Rear Down Switch Circuit Short to

Battery

B1755 01: Driver Seat Assembly Horizontal Forward Switch

Circuit Short to Battery

B1760 01: Driver Seat Assembly Horizontal Rearward Switch

Circuit Short to Battery

B1815 01: Driver Seat Recline Forward Switch Circuit Short

to Battery

B1820 01: Driver Seat Recline Rearward Switch Circuit Short

to Battery

DTC B1825, B1850,
B1860, B2355, B2365, or
B2375

B1825 01: Driver Seat Recline Position Sensor Circuit Short to

Battery

B1825 06: Driver Seat Recline Position Sensor Circuit Short to

Ground or Open

B1825 5A: Driver Seat Recline Position Sensor Circuit

Plausibility Failure

B1850 01: Driver Seat Lumbar Horizontal Position Sensor

Circuit Short to Battery

B1850 06: Driver Seat Lumbar Horizontal Position Sensor

Circuit Short to Ground or Open

B1850 5A: Driver Seat Lumbar Horizontal Position Sensor

Circuit Plausibility Failure

B1860 01: Driver Seat Lumbar Vertical Position Sensor

Circuit Short to Battery

B1860 06: Driver Seat Lumbar Vertical Position Sensor

Circuit Short to Ground or Open

B1860 5A: Driver Seat Lumbar Vertical Position Sensor

Circuit Plausibility Failure

B2355 01: Driver Seat Front Vertical Position Sensor Circuit

Short to Battery

B2355 06: Driver Seat Front Vertical Position Sensor Circuit

Short to Ground or Open

B2355 5A: Driver Seat Front Vertical Position Sensor Circuit

Plausibility Failure

B2365 01: Driver Seat Rear Vertical Position Sensor Circuit

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Power Seats - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

DIAGNOSTIC STARTING POINT - SEATS

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 B1335

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 B1335 00

Device Power 3 Circuit

Short to Battery

B2365 06: Driver Seat Rear Vertical Position Sensor Circuit

Short to Ground or Open

B2365 5A: Driver Seat Rear Vertical Position Sensor Circuit

Plausibility Failure

B2375 01: Driver Seat Assembly Horizontal Position Sensor

Circuit Short to Battery

B2375 06: Driver Seat Assembly Horizontal Position Sensor

Circuit Short to Ground or Open

B2375 5A: Driver Seat Assembly Horizontal Position Sensor

Circuit Plausibility Failure

DTC B3920 or B3921

B3920 01: Group 1 Seat Motors Circuit Shorted to Battery or

Open

B3920 02: Group 1 Seat Motors Circuit Shorted to Ground

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Power Seats - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

DTC B1335 0B

Device Power 3 Circuit Current Above Threshold

DTC B1335 42

Device Power 3 Circuit Calibration Data Set Not Programed

DTC B1335 4B

Device Power 3 Circuit Calibration Not Learned

Diagnostic Fault Information

Circuit

Short to

Ground

Open/High

Resistance

Short to

Voltage

Signal

Performance

Driver Seat Front Vertical
Motor Down Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Front Vertical
Motor Up Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Rear Vertical
Motor Down Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Rear Vertical
Motor Up Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Horizontal Motor
Forward Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Horizontal Motor
Rearward Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Recline Motor
Forward Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Recline Motor
Rearward Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Lumbar Motor Up
Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Lumbar Motor
Down Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Lumbar Motor
Forward Control

B3920 02

1

B3920 01

B1335 00

B1335 0B

Driver Seat Lumbar Motor

B1335 00

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Power Seats - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado