AutoCodes – Chevrolet – B273A 2017 Chevrolet Silverado

B273A 2017 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 2017 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 199

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 2017 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 2017 Chevrolet Silverado - Hill Descent Control Switch - AutoCodes.com — B273A 2017 Chevrolet Silverado Code - Hill Descent Control Switch

What does this mean?

What are the Possible Causes of the DTC B273A 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the B273A 2017 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 2017 Chevrolet Silverado Code

1. What does OBDII code B273A mean on a 2017 Chevrolet Silverado related to the Hill Descent Control Switch?

This code indicates a fault with the Hill Descent Control Switch circuit.

2. What are the common symptoms of OBDII code B273A on a 2017 Chevrolet Silverado?

Common symptoms may include the Hill Descent Control system not functioning properly, the dashboard light for the system staying illuminated, or the switch itself not responding.

3. What are possible causes of OBDII code B273A on a 2017 Chevrolet Silverado?

Potential causes include a faulty Hill Descent Control Switch, damaged wiring or connectors in the circuit, or a malfunction in the control module.

4. How can I diagnose the issue related to OBDII code B273A on my 2017 Chevrolet Silverado?

You can start by visually inspecting the Hill Descent Control Switch and associated wiring for any damage. Using a diagnostic scanner to read the code and perform further testing on the switch and circuit can help pinpoint the problem.

5. Can I still drive my 2017 Chevrolet Silverado with OBDII code B273A present?

While the vehicle may still be operational, it is recommended to have the issue diagnosed and repaired to ensure the Hill Descent Control system functions correctly when needed.

6. Is it safe to continue using the Hill Descent Control feature with OBDII code B273A active?

It is not advisable to use the Hill Descent Control feature when the system is showing an error code, as it may not work as intended and could potentially cause safety hazards.

7. How can I repair OBDII code B273A on my 2017 Chevrolet Silverado?

Repair options include replacing the Hill Descent Control Switch if it is faulty, repairing any damaged wiring or connectors in the circuit, or reprogramming the control module if needed.

8. Can OBDII code B273A on a 2017 Chevrolet Silverado be cleared with a simple reset?

Clearing the code with a diagnostic scanner may temporarily turn off the warning light, but the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

9. Are there any recalls or technical service bulletins related to OBDII code B273A on the 2017 Chevrolet Silverado?

It is recommended to check with a Chevrolet dealership or the manufacturer's website for any recalls or technical service bulletins related to this specific OBDII code.

10. How much can I expect to pay for repairs related to OBDII code B273A on my 2017 Chevrolet Silverado?

The cost of repairs can vary depending on the exact cause of the issue and labor rates in your area. It is advisable to obtain quotes from reputable mechanics or dealerships for an accurate estimate.