AutoCodes – Chevrolet – B1740 2018 Chevrolet Silverado

B1740 2018 Chevrolet Silverado Code - Driver Seat Front Down Switch Circuit

Quick Answer

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1740 2018 Chevrolet Silverado indicates Driver Seat Front Down Switch Circuit.
Common causes: Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 177

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 23, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1740 2018 Chevrolet Silverado Description

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. When the power seat or lumbar switches are pressed, the appropriate signal circuit from the Seat Memory Control Module is pulled low through the switch contacts indicating the power seat command. The Seat Memory Control Module then commands the driver seat or lumbar to move in response to the switch signals. The Diagnostic Trouble Code (DTC) will be set when there is a short to ground on a switch signal circuit.

OBDII Code B1740 2018 Chevrolet Silverado - Driver Seat Front Down Switch Circuit - AutoCodes.com — B1740 2018 Chevrolet Silverado Code - Driver Seat Front Down Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1740 2018 Chevrolet Silverado?

Faulty Driver Seat Adjuster Switch
Driver Seat Adjuster Switch harness is open or shorted
Driver Seat Adjuster Switch circuit poor electrical connection
Faulty Seat Memory Control Module

How to Fix the DTC B1740 2018 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1740 2018 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1740 2018 Chevrolet Silverado code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1740 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B1740 in a 2018 Chevrolet Silverado related to the Driver Seat Front Down Switch Circuit?

- Common symptoms include the front driver seat being unable to move downward or experiencing erratic movements.

2. What are possible causes of OBDII code B1740 in a 2018 Chevrolet Silverado?

- Possible causes may include a faulty driver seat front down switch, damaged wiring or connectors in the circuit, or a malfunctioning seat control module.

3. How can I diagnose the issue causing OBDII code B1740 in my 2018 Chevrolet Silverado?

- To diagnose the issue, you can perform a visual inspection of the seat switch and wiring, check for loose connections, use a multimeter to test continuity, and scan the seat control module for fault codes.

4. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code B1740 triggered?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the driver seat.

5. Can I repair OBDII code B1740 in my 2018 Chevrolet Silverado by myself?

- Depending on your level of automotive expertise, you may be able to repair the issue yourself by replacing the faulty switch, repairing damaged wiring, or addressing any loose connections.

6. Are there any common DIY fixes for resolving OBDII code B1740 in a 2018 Chevrolet Silverado?

- Common DIY fixes include checking and cleaning the electrical connections, replacing a faulty switch, and resetting the seat control module.

7. How much does it typically cost to repair OBDII code B1740 in a 2018 Chevrolet Silverado at a professional auto repair shop?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300, including parts and labor.

8. Can resetting the vehicle's computer system clear OBDII code B1740 in a 2018 Chevrolet Silverado?

- Resetting the computer system may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent the code from reoccurring.

9. Will disconnecting the battery reset OBDII code B1740 in a 2018 Chevrolet Silverado?

- Disconnecting the battery may reset the code temporarily, but it is not a guaranteed fix. It is recommended to diagnose the issue and perform proper repairs.

10. How long does it typically take to repair OBDII code B1740 in a 2018 Chevrolet Silverado?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair, but it may take anywhere from 1 to 3 hours to complete the repair.