AutoCodes – Chevrolet – B273A 2015 Chevrolet Silverado

B273A 2015 Chevrolet Silverado Code - Hill Descent Control Switch

Quick Answer

The Body Control Module (BCM) monitors the signal circuit from the Hill Descent Control Switch. Common causes include Faulty Multifunction Switch Instrument Panel, Multifunction Switch Instrument Panel harness is open or shorted, Multifunction Switch Instrument Panel 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: B273A 2015 Chevrolet Silverado indicates Hill Descent Control Switch.
Common causes: Common causes include Faulty Multifunction Switch Instrument Panel, Multifunction Switch Instrument Panel harness is open or shorted, Multifunction Switch Instrument Panel 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 246

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 May 30, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B273A 2015 Chevrolet Silverado Description

The Body Control Module (BCM) monitors the signal circuit from the Hill Descent Control Switch. The hill descent switch is a momentary switch that is normally open. When the hill descent control switch is pressed once, the body control module will request the electronic brake control module via serial data to disable or enable the hill descent control. When activated, the switch grounds the hill descent control system signal circuit. The electronic brake control module then enables or disables the hill descent control system. The electronic brake control module will request the instrument cluster via serial data to turn the hill descent indicator ON or OFF to notify the driver.

OBDII Code B273A 2015 Chevrolet Silverado - Hill Descent Control Switch - AutoCodes.com — B273A 2015 Chevrolet Silverado Code - Hill Descent Control Switch

What does this mean?

What are the Possible Causes of the DTC B273A 2015 Chevrolet Silverado?

Faulty Multifunction Switch Instrument Panel
Multifunction Switch Instrument Panel harness is open or shorted
Multifunction Switch Instrument Panel circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B273A 2015 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B273A 2015 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 B273A 2015 Chevrolet Silverado code?

Need more information on how to fix the B273A 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 B273A 2015 Chevrolet Silverado Code

1. What does the OBDII code B273A mean on a 2015 Chevrolet Silverado?

The B273A code indicates an issue with the Hill Descent Control (HDC) switch, such as a malfunction or abnormal signal being detected by the control module.

2. What are the symptoms of the B273A code in a 2015 Chevrolet Silverado?

Common symptoms include the Hill Descent Control feature not working, an illuminated check engine light or service light, and possibly a displayed message related to HDC.

3. What causes the B273A code to appear?

Causes may include a faulty Hill Descent Control switch, damaged wiring or connectors in the switch circuit, or a problem with the Body Control Module (BCM).

4. Can I drive my Silverado if the B273A code is active?

Yes, you can drive the truck, but the Hill Descent Control feature will not function, which may affect vehicle control on steep declines.

5. How do I diagnose the B273A code on a 2015 Chevrolet Silverado?

Use a scan tool to confirm the code, inspect the Hill Descent Control switch for physical damage, and check the wiring and connectors for any signs of wear, corrosion, or disconnection.

6. How is the B273A code typically fixed?

Repairs may involve replacing the Hill Descent Control switch, repairing damaged wiring or connectors, or reprogramming the Body Control Module if necessary.

7. How much does it cost to fix the B273A code on a 2015 Chevrolet Silverado?

The repair cost can vary, but replacing the switch generally costs between $50 and $150 for the part, plus labor charges if done by a professional.

8. Can a low battery cause the B273A code to appear?

While unlikely, a low or failing battery can cause electrical issues, which might indirectly affect the Hill Descent Control system.

9. Does the B273A code affect other vehicle systems?

This code specifically relates to the Hill Descent Control system, but malfunctioning wiring or a faulty control module could potentially impact other electronic systems.

10. Do I need to clear the code after repairs?

Yes, after making repairs, use an OBDII scan tool to clear the code and verify that it does not return during normal operation.