AutoCodes – Chevrolet – B273A Chevrolet

B273A Chevrolet 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 Chevrolet 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 842

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

What does this mean?

What are the Possible Causes of the DTC B273A Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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Need Help with the Code?

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Information for Specific Chevrolet Models

B273A 2014 Chevrolet Silverado — Hill Descent Control Switch
B273A 2015 Chevrolet Silverado — Hill Descent Control Switch
B273A 2016 Chevrolet Silverado — Hill Descent Control Switch
B273A 2017 Chevrolet Silverado — Hill Descent Control Switch
B273A 2018 Chevrolet Silverado — Hill Descent Control Switch

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 Chevrolet Code

1. What are the common symptoms of OBDII code B273A in a Chevrolet related to the Hill Descent Control Switch?

The common symptoms include the Hill Descent Control system not functioning properly, dashboard warning lights related to the system illuminating, and potential issues with the vehicle's traction control.

2. What are the possible causes of OBDII code B273A in a Chevrolet linked to the Hill Descent Control Switch?

The code may be triggered by a faulty Hill Descent Control switch, damaged wiring or connectors in the system, a malfunctioning Hill Descent Control module, or issues with the vehicle's electronic systems.

3. How can I diagnose the source of OBDII code B273A in a Chevrolet regarding the Hill Descent Control Switch?

Diagnosing the issue typically involves using a diagnostic scanner to retrieve the specific fault codes, conducting a visual inspection of the wiring and connectors, testing the Hill Descent Control switch for proper functionality, and potentially checking the Hill Descent Control module.

4. Are there any DIY repair tips for addressing OBDII code B273A related to the Hill Descent Control Switch in a Chevrolet?

DIY repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty Hill Descent Control switch, resetting the system by disconnecting the battery, or seeking professional assistance if the issue persists.

5. Can driving with OBDII code B273A related to the Hill Descent Control Switch in a Chevrolet be dangerous?

While driving with this code may not pose an immediate safety risk, it is important to address the underlying issue promptly to ensure the proper functioning of the Hill Descent Control system, especially in challenging driving conditions.

6. How much does it cost to repair OBDII code B273A in a Chevrolet associated with the Hill Descent Control Switch?

The cost of repair can vary depending on the specific cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take your vehicle to a mechanic. It's advisable to get a few quotes for an accurate estimate.

7. Can OBDII code B273A related to the Hill Descent Control Switch in a Chevrolet trigger other warning lights on the dashboard?

Yes, the code may trigger other warning lights related to the vehicle's stability control or traction control systems, indicating a potential issue that requires attention.

8. Is it safe to continue driving my Chevrolet with OBDII code B273A related to the Hill Descent Control Switch illuminated?

While it may be safe to drive in normal conditions, it is recommended to address the underlying issue promptly to ensure the proper functioning of the Hill Descent Control system when needed, especially in challenging terrain.

9. How long does it typically take to repair OBDII code B273A in a Chevrolet related to the Hill Descent Control Switch?

The repair time can vary depending on the complexity of the issue, availability of parts, and the skill level of the person performing the repair. It's best to consult with a mechanic for a more accurate estimate.

10. Can extreme weather conditions affect the triggering of OBDII code B273A in a Chevrolet linked to the Hill Descent Control Switch?

Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate issues related to the Hill Descent Control system and may lead to the triggering of the OBDII code. Regular maintenance and inspections can help prevent such occurrences.